Class 1 medical after refractive surgery: the rules, authority by authority
Written August 2026 · Regulator guidance researched August 2026
Every major authority now permits refractive surgery. What they disagree about is almost everything else. The published grounding periods for the same operation run from roughly two weeks to twelve months depending on whose licence you hold — and beneath that, the regulators split into two families. Some judge you on the refraction you have after surgery. Others apply a limit to the refraction you had before it, which is a number the operation erases permanently and which survives only in the operating hospital's file. If you are flying to another country to be treated, that is the single detail worth getting right before you go.
The intervals are a long way apart
Pilots comparing notes online usually discover this the confusing way: one colleague was back on the line in a fortnight, another sat out most of a year, and both were telling the truth. The difference is jurisdictional, not clinical. Here is the published spread as researched in August 2026, with what each interval appears designed to protect.
| Authority | Published interval after surgery | What the interval is protecting |
|---|---|---|
| FAA (United States) | Minimum recovery period 2 weeks for LASIK and SMILE, 12 weeks for PRK — and then four further conditions, all judged on outcome: no complications and released from care, off prescription drops, no adverse visual symptoms, refraction stabilised and standards met, on Form 8500-7. Six months where the result is monovision. | A short floor for healing, then outcome — the risks the form names are glare, halo, photophobia, multiple images and poor low-light vision, which are cockpit problems rather than healing problems. |
| Transport Canada | Minimum 30 days, with topical medication other than artificial tears discontinued; a follow-up report at 30 days to the regional aviation medical office. The same clock applies to touch-ups. | The drug-effect window as much as the healing one — the medication condition is explicit, and re-treatments are not treated as minor. |
| CASA (Australia) | Minimum grounding around 2 weeks after LASIK performed with a laser keratome; commonly 4–6 weeks for other procedures. No privileges exercised until cleared. | Procedure-specific epithelial and flap healing — the only authority here whose published interval changes with the technique used. |
| UK CAA / EASA framework | Surgeon's report typically no sooner than about 8 weeks if uncomplicated; some guidance cites 3 months before a return to fit status. Class 1 additionally needs an aviation eye specialist assessment at an AeMC, at least a week after the surgeon's follow-up. | Demonstrated stability, not merely healing — the deliberate gap between two appointments exists so that a change between them can be seen. |
| DGCA (India) | Widely reported as 6–12 months post-operative, with documented stable refraction and pre-operative records produced. | Long-run regression, and the paper trail — this is the standard most explicitly interested in what you looked like before surgery. |
| CAAC (China) | Corneal refractive surgery approved for civilian pilots since 2006; from 2017, moderate myopia together with prior surgery accepted at initial examination. | Access at entry. The notable move here is not an interval but a category — previously operated candidates can enter training, not merely stay in a career. |
Published guidance and widely reported practice, researched August 2026. Intervals are minima and are frequently extended for higher pre-operative corrections or any complication. This is not legal, regulatory or medical advice — the only interval that governs you is the one your own examiner confirms in writing.
Correction, 19 September 2026. Until today the FAA row of this table read “no fixed calendar period”, and the paragraphs beneath it were written around that. It was wrong. The FAA’s Eyes – Refractive Surgery Status Summary, revision dated 27 August 2025 and read in full on 19 September 2026, opens with a minimum recovery period of two weeks for LASIK and SMILE and twelve weeks for PRK. The error was ours rather than a change in the rule, and the outcome conditions this page described have always been real — they sit after the interval rather than instead of it. The row, the two paragraphs and the FAQ answer have all been corrected, and the sheet itself is set out below.
A spread of two weeks to twelve months for one operation is not sloppiness. Each regulator is answering a slightly different question, and reading the right-hand column tells you what to expect to be asked. If your authority is protecting against night-vision symptoms, expect questions about glare rather than a date. If it is protecting against regression, expect to prove a refraction held still over months, which cannot be compressed by feeling well.
The fork nobody explains: initial applicant or licence renewal
Almost every argument in pilot forums about this subject is two people in different situations talking past each other. A serving pilot with a current certificate is being revalidated: the file already contains their history, and the question is whether they still meet the standard. A cadet or career-changer applying for their first Class 1 is being assessed from nothing, and the standards written for initial issue are consistently stricter than those for renewal.
The difference bites hardest on surgery, because an initial applicant is the one likely to have been operated years earlier, for their own reasons, with no aviation career in mind at the time — and therefore the one least likely to have kept anything. A revalidating pilot generally knew to tell their examiner beforehand. Someone who had laser surgery at twenty-two and decided at twenty-eight to train commercially usually did not.
The two families: judged after, or judged before
Underneath the calendar, the authorities divide on something more consequential.
The post-operative family asks what your eyes do now. The FAA's structure is the clearest example: a short minimum interval and then four outcome questions — stability, standards met, freedom from complications, and an explicit list of symptoms that would disqualify. Two of those twelve weeks are a healing floor; everything that decides the case sits after them. Under this approach an old operation with a good result and no symptoms is close to a non-event.
The pre-operative family applies a threshold to the refractive error you began with. In the European framework the commonly published limits for an initial Class 1 are myopia not exceeding −6.00 D, hypermetropia not exceeding +5.00 D and astigmatism not exceeding 2.00 D. It is worth being accurate about what exceeding them means: the published position is referral — to an ophthalmologist with aviation experience, or to the licensing authority's medical assessor — with a fit assessment possible after a satisfactory evaluation. It is a gate that routes you to a specialist, not a wall. India's DGCA sits in the same family from the other direction, requiring pre-operative records as a condition rather than a threshold, and Russian flight-crew examination applies limits to the pre-operative refraction too.
The consequence is documentary and it is absolute. Surgery makes your pre-operative refraction permanently unmeasurable. No examination room, no equipment and no specialist can recover it from a treated cornea. If a standard asks for it, the only place it exists is the file of the hospital that operated on you.
This is a different problem from the one that faces you after you fly home, where the difficulty is producing refractions repeated at intervals to demonstrate stability. That one is solvable at home with a named optometrist, and we set it out on the occupational medicals page because it applies well beyond aviation. The pre-operative record is the opposite kind of problem: it has exactly one window, and the window closes when you go into theatre.
Being operated in China, and certified somewhere else
China's position is genuinely permissive, and it is worth stating precisely because the English- language internet almost never does. CAAC approved corneal refractive surgery for civilian pilots in 2006, and from 2017 accepted moderate myopia together with prior surgery at initial examination. Chinese refractive surgeons therefore operate in a system where aviation candidates are a normal category rather than an unusual one, and where the country's own regulator has been examining post-surgical pilots for two decades. Chinese cohorts of civilian pilots have been followed in the published literature specifically for long-term outcomes after refractive surgery, which is not something you can say about most destinations.
None of that transfers to your licence automatically, and it would be dishonest to imply otherwise. You are certified by the authority you fly under, not by the one where you were treated. A hospital thoroughly used to CAAC requirements has no particular reason to shape a discharge file around FAA form structures or an AeMC's expectations, and will not do so unless asked. The useful move is not to hope the standards align; it is to take your own authority's documentary requirement into the pre-operative consultation and ask, item by item, whether each piece will be provided and in what language.
That conversation is also where you learn something the brochure will not tell you: which procedure your file will look best with. Where a standard sets a residual corneal thickness floor, or an examiner is known to scrutinise flap-based surgery for a physically demanding role, that can legitimately steer the discussion toward a surface or lens-based option. It does not override the clinical answer — what your cornea will actually support is decided by measurement — but where two options are both clinically reasonable, the regulatory consequence is a fair input, and your surgeon cannot weigh it if you never mention that you fly.
The second axis: regulators discriminate by procedure, not only by date
The table above is organised by authority, because that is how a pilot experiences the problem — you hold one licence and you want to know your number. But the same regulators apply a second axis, and it is easy to miss because it is published in a different document: which operation you had.
The clearest published example is the FAA's Guide for Aviation Medical Examiners, which names the refractive procedures it accepts for visual acuity correction — radial keratotomy, epikeratophakia, LASIK including wavefront-guided LASIK, SMILE, photorefractive keratectomy, and conductive keratoplasty. That guidance page carries a last-updated date of 27 August 2025 and was read for this page in August 2026. SMILE appearing on it by name is worth pausing on if you are reading this from outside the United States, because SMILE is one of the two procedures most often performed on foreign patients in China, and it is common to assume a newer technique sits in a regulatory grey zone simply because it is newer.
What separates the procedures on that list is not how difficult they are. It is permanence. Conductive keratoplasty is the one carved out for different handling: because it is not considered permanent and regression of visual acuity is expected over time, the FAA evaluates it individually after a six-month waiting period, and certification runs through an Authorization for special issuance under 14 CFR 67.401 rather than through the ordinary route. Everything else on the list is judged on outcome.
Read that carefully and the whole subject reorganises itself. Aviation medicine's objection has never been to refractive surgery. It is to refractive instability. It is why the FAA's own list of effects it describes as potentially incompatible with flying duties reads corneal scarring or opacities, worsening or variability of vision, and night-glare — three descriptions of a result that moves or degrades, and not one of them a date. A procedure that holds still is a solved problem to a regulator; one that drifts is an open file for as long as you fly. Why refractive results drift at all, and how differently the published rates read depending on what is being counted, is the subject of our page on refractive regression — linked here for reading, not because it changes any interval above.
There are in fact two dates in the FAA's structure, and they do different jobs. The first is the grounding floor above: two weeks, or twelve for PRK. The second is a fork in which paperwork applies. If the procedure was performed three months ago or longer, the FAA may accept the examiner's own eye evaluation together with a statement regarding the absence of adverse sequelae. If it was performed within the last three months, the examiner works instead from the FAA's Eyes–Refractive Surgery Status Summary — the sheet set out in the next section. Neither date is a promise. But both are worth knowing before you book a trip that lands your operation six weeks in front of a scheduled renewal.
The sheet your examiner actually works from, item by item
The instrument named above is a single page, and reading it is more useful than reading any summary of it, this one included. The FAA's Eyes – Refractive Surgery Status Summary, in the revision dated 27 August 2025, is filled in and signed by your ophthalmologist or optometrist and handed to your examiner. It asks five questions, and its first is the one this page got wrong until September 2026.
- Has the minimum recovery period been met? Two weeks for LASIK, two weeks for SMILE, twelve weeks for PRK. The procedure is circled on the form, so the interval is selected by what was actually done rather than by what it is called.
- Free of surgical and post-operative complications — elevated pressure and delayed healing are the two named — released from post-operative care, and no clinical concerns. Note the second clause: being past the interval while still under follow-up does not answer this one.
- Off all prescription eye medication, or on the surgeon's usual taper.
- No adverse visual symptoms interfering with visual function. The form lists glare, halo, photophobia, multiple images, blurred vision, reduced quality of vision in low light, and difficulty with night driving — and it carries an explicit instruction to the examining clinician to ask about night vision specifically rather than wait for it to be volunteered.
- Visual result stabilised, correction received if needed, and best corrected vision meeting the standard for your class, written into an acuity grid on the same sheet.
Then the decision rule, which is the part worth carrying with you: if every item lands in the clear column and the acuity standard is met, the examiner may issue. If any single item lands in the shaded column, the examiner must defer. Not weigh it, not discuss it — defer, note which item caused it, and attach the clinical notes. That is why the interval is the least interesting line on the form. Serving two weeks and turning up with an unresolved haze symptom produces the same outcome as not serving it at all.
One relieving detail, because it is widely misunderstood: the summary sheet is not required. Detailed clinical progress notes addressing the same five items may be submitted instead. The FAA's own note is that the sheet exists to streamline and significantly decrease review time, which is a statement about queue length rather than eligibility.
The STOP line, and why it matters more if you were operated abroad
Above the five questions, the form carries a stop instruction. If the airman holds an authorisation or special issuance for any other eye condition, or has keratoconus, conductive keratoplasty, clear lens extraction or visual field loss — or if the procedure was not FDA-approved — the summary may not be used at all. Full clinical progress notes go in instead, and the case moves to the corresponding pathway in the Guide for Aviation Medical Examiners.
Nothing on that list is about the country you were treated in, and it is worth being exact about that rather than alarming: a LASIK or SMILE performed overseas on an FDA-approved platform is not singled out anywhere in the FAA's scheme. But the last item is where a foreign operation can quietly end up on the longer route, because approval is a property of the device and procedure, and markets do not approve the same things at the same time. The practical consequence is small and entirely under your control: record the exact procedure name, the laser or lens platform and model, and the power implanted, before you leave the hospital. The question your examiner has to answer is about the device. A discharge summary that says only "laser vision correction, both eyes" cannot answer it, and retrieving that detail from another country a year later is a great deal harder than asking for it on the day. What any of this means for your own certificate is a question for your Aviation Medical Examiner in writing, not for this page.
One boundary, stated so this is not over-read: that list is corneal procedures plus conductive keratoplasty. A phakic implantable lens is an intraocular operation, assessed on a different pathway with its own requirements, and what actually changes when the lens goes inside the eye is set out on the pilots and cabin crew page. Do not read absence from a corneal-procedure list as prohibition, and do not read presence on it as clearance for you personally — which procedure is appropriate for your eyes is determined by the operating surgeon, and which is appropriate for your licence is determined by your examiner in writing.
The medical is not a one-time hurdle
Clearing the interval is where most accounts of this stop, and it is the wrong place to stop. Refractive results can drift, and myopic regression after corneal surgery has been studied specifically in Chinese civilian pilot populations, which is precisely the group whose vision is re-tested on a fixed schedule for the rest of their working lives. Where distance acuity later falls below the standard, the published expectation is unglamorous and entirely survivable: the pilot wears spectacles or contact lenses again to meet it.
That deserves saying plainly, because the fantasy sold around refractive surgery is permanent freedom from correction, and a pilot buying that fantasy is buying the wrong thing. What surgery reliably changes is your uncorrected vision and your daily dependence on glasses. What it does not do is exempt you from a recurring standard. Read it as removing a nuisance rather than removing a requirement, and nothing about the next twenty years of medicals will feel like a betrayal.
The cockpit is not the room you were examined in
Everything above happens in a consulting room at sea level. You then go to work in a pressurised cabin held at roughly 5,000 to 8,000 feet of equivalent altitude, in air running at about 10 to 20 percent relative humidity and sometimes below ten, against a human comfort range nearer forty to sixty. Neither figure appears anywhere in your medical, and both act on a cornea that was operated on recently. The aeromedical literature on this is real and it is procedure-specific — and it is also, in our reading, almost always quoted at pilots in the wrong units.
What altitude does to a treated cornea depends on how it was treated. The finding that opened the subject came from radial keratotomy: RK eyes shift hyperopic on exposure to altitude, by an average of roughly +1.03 D at 12,000 feet and +1.94 D at 17,000 feet, developing progressively over more than six hours of exposure and reversing on descent. The mechanism proposed is hypoxic corneal swelling at the incisions, flattening the centre. Corneas treated with PRK, studied the same way, show no significant altitude-induced refractive change. LASIK sits between the two: refractive change has been observed in LASIK subjects where PRK subjects showed none, and climbers at eight and fourteen weeks after myopic LASIK have described a transient myopic shift on ascent to extreme altitude that cleared on the way down. Note that the two shifts run in opposite directions, which is a good sign that they are different mechanisms rather than one effect of different sizes.
Now the correction, because those numbers are routinely misused. Every one of them was measured on a mountain — 12,000 to 17,000 feet and above — and not on a flight deck. A pressurised cabin sits well below the lowest of them. The read-across to line flying is therefore much weaker than the figures sound, and a page that quotes them at a pilot without saying so is frightening the wrong audience about the wrong exposure. Where they stop being academic is specific and short: unpressurised general aviation, an actual depressurisation, and the mountaineering, trekking or skiing you do on days off. That last one is the exposure most likely to catch a professional pilot out, because nobody files a holiday as an aeromedical event.
Why this loops back to the paperwork. Both of the LASIK cases above were eight and fourteen weeks post-operative — the same window in which a pilot returning from surgery is assembling a first post-operative medical and being asked to show that refraction has settled. A shift that reverses on descent is not in itself a disqualifying finding. But a refraction measured in the wrong week is a confusing line in a file whose entire purpose is to demonstrate stability, and the examiner reading it later cannot tell from the number where you had been that morning. The practical version of this is scheduling rather than medicine: keep your first high-altitude non-cabin exposure and your stability refractions out of the same fortnight, and tell whoever measures you where you have been.
Dry air is the exposure that does not wear off. Altitude effects come and go with the climb; cabin humidity is simply the condition of your workplace. It is worth knowing the baseline before attributing anything to surgery: a study of 1,246 Australian commercial pilots found 72.3 percent reporting dry eye symptoms — that is the untreated professional population, before anyone has been near a laser. Post-refractive dryness lands on top of that figure, not instead of it, which cuts both ways. It means a pilot who develops dry eye after surgery has not necessarily been made unusual by the surgery; and it means the flight deck is a harsher place to recover than the recovery advice written for the general public assumes. Our full account of the timeline and what actually helps is on the dry eye page, and the glare and halo side sits on the night vision page — both linked for reading rather than restated here.
The certification point is the one worth carrying away. Dryness is one of the ordinary routes to an acuity that fluctuates between measurements, and fluctuation is the exact word the FAA's list uses — variability of vision. That makes an unremarkable comfort complaint into something worth managing properly before a renewal rather than after it. None of this decides whether you are a candidate for any procedure, or which one: that is determined by the operating surgeon on your measurements, and the interval that governs you is the one your own examiner confirms in writing.
Ask first, in writing, and keep the answer
The single most valuable thing on this page costs one email. Before you book surgery, write to your AME, DME or AeMC, state the procedure you are considering, state that it will be performed abroad, and ask what they will require and over what period. Ask for the reply in writing. Three things follow from having it: you plan the trip against a real interval rather than a forum anecdote; you know the exact document list to demand pre-operatively; and if the examiner who sees you afterwards is a different person, you hold a contemporaneous record of what you were told.
Do not, under any circumstances, treat non-disclosure as a strategy. Refractive surgery leaves visible corneal signs and is straightforwardly detectable on examination; a declared operation with a clean file is routine, while an undeclared one discovered later is a truthfulness problem rather than a vision problem, and those are far harder to recover from. The general case for declaring — and what a good surgeon's letter contains — is set out on our page for pilots and cabin crew, which also covers rostering and the split between an aeromedical timeline and a tourist one.
And the line this site repeats everywhere applies with full force here: whether your eyes can have any of these procedures at all, and which one, is determined by the operating surgeon after the full diagnostic workup. No regulator's table makes you a candidate, and nothing on this page is a clearance to fly.
Questions people actually ask
How long after LASIK or SMILE before I can hold a Class 1 medical?
It depends entirely on who issues your licence, and the published intervals are not close together. As researched in August 2026, Transport Canada works to a minimum of about 30 days with topical medication other than artificial tears discontinued; Australia's CASA describes a minimum grounding of roughly two weeks after LASIK with a laser keratome and longer, commonly four to six weeks, for other procedures; the UK CAA's guidance indicates a surgeon's report typically no sooner than around eight weeks in an uncomplicated case, with sources also citing three months before a return to fit status; and India's DGCA is widely reported as requiring six to twelve months. That is a spread of roughly two weeks to a year for the same operation. Treat every figure here as a published guide researched in August 2026, not as a clearance, and confirm the current requirement with your own examiner before booking anything.
Does the FAA have a fixed waiting period after refractive surgery?
Yes. The FAA's Eyes – Refractive Surgery Status Summary, in the revision dated 27 August 2025, makes a minimum recovery period its first question: two weeks for LASIK, two weeks for SMILE and twelve weeks for PRK, with the procedure circled on the form so the interval follows what was actually done. Meeting it is necessary and not sufficient. Four further items have to be answered in the clear: free of surgical and post-operative complications and released from post-operative care, off all prescription eye medication or on the surgeon's usual taper, no adverse visual symptoms interfering with visual function, and a stabilised visual result with best corrected vision meeting the standard for your class. If any single item falls in the shaded column the examiner must defer rather than issue. Where the surgery produces a monovision result a six-month stabilisation period applies instead. The summary sheet itself is not mandatory — detailed clinical progress notes addressing the same items may be submitted in its place. Confirm the current position with your Aviation Medical Examiner rather than relying on this page.
Does having laser eye surgery outside the United States change what the FAA asks for?
Not because of the country, and it is worth being exact about that. Nothing in the FAA's scheme singles out surgery performed abroad, and LASIK, SMILE and PRK are named as accepted refractive procedures wherever they were carried out. What can change the route is one line on the Eyes – Refractive Surgery Status Summary: the form may not be used at all if the airman holds an authorisation or special issuance for another eye condition, or has keratoconus, conductive keratoplasty, clear lens extraction or visual field loss, or if the procedure was not FDA-approved. In those cases full clinical progress notes are submitted instead and the case follows the corresponding Guide for Aviation Medical Examiners pathway. Approval is a property of the device and the procedure rather than of the clinic or the country, and markets do not approve the same things at the same time, so the practical step is to record the exact procedure name, the laser or lens platform and model, and the power implanted, before you leave the hospital. A discharge summary that says only laser vision correction, both eyes, cannot answer the question your examiner has to answer. Which route applies to you is determined by that examiner in writing.
Can I get an initial EASA Class 1 medical if my pre-operative prescription was above the limit?
This is the question that catches people, because the threshold is applied to a number that surgery removes. The commonly published limits for an initial Class 1 applicant are myopia not exceeding -6.00 dioptres, hypermetropia not exceeding +5.00 dioptres and astigmatism not exceeding 2.00 dioptres. Being outside them is described as triggering referral to an ophthalmologist with aviation experience, or to the licensing authority's medical assessor, rather than an automatic refusal, and a satisfactory specialist evaluation can support a fit assessment. The practical consequence is documentary: an applicant assessed after surgery cannot demonstrate a pre-operative refraction from an examination room, because it no longer exists in the eye. It exists only in the operating hospital's file, which is why it has to be requested before the operation. Verify current requirements with an AeMC.
Does China's CAAC accept pilots who have had laser eye surgery?
Yes, and China moved earlier than several other systems. Corneal refractive surgery was approved for civilian pilots by the Civil Aviation Administration of China in 2006, and from 2017 moderate myopia together with previous corneal refractive surgery has been accepted at initial examination — meaning candidates who have had surgery can enter training rather than only continue an existing career. That matters if you are being examined under CAAC. It does not automatically help you if you hold a licence issued elsewhere: the operating hospital's familiarity with the Chinese standard does not shape the file for a foreign authority, and you are certified where you fly, not where you were operated.
What records do I need from a Chinese hospital for my aviation medical at home?
Ask for them in English, in writing, and ask before the operation rather than at discharge. The set that matters to an aviation examiner is: the pre-operative refraction in a comparable format with the date it was measured, the pre-operative corneal thickness and topography, the operative report naming the procedure and the platform used, the planned refractive target, the residual corneal thickness where applicable, and for a phakic lens the model, power, and the baseline vault and endothelial cell count. Add a named contact at the hospital who can answer a question from your own examiner. The pre-operative measurements are the irreplaceable part, because every other document can in principle be reconstructed later and those cannot.
Does high altitude change your vision after LASIK or PRK?
It depends on which procedure you had, and the published figures are almost always quoted at pilots in the wrong units. The large effect belongs to radial keratotomy, an older incisional procedure: RK eyes shift hyperopic on exposure to altitude by an average of roughly +1.03 D at 12,000 feet and +1.94 D at 17,000 feet, developing over more than six hours and reversing on descent, with hypoxic corneal swelling at the incisions the proposed mechanism. Corneas treated with PRK show no significant altitude-induced refractive change when studied the same way. LASIK sits between them, with refractive change observed in LASIK subjects where PRK subjects showed none, and climbers at eight and fourteen weeks after myopic LASIK describing a transient myopic shift on ascent to extreme altitude that cleared on the way down. The important qualification is that every one of those measurements was taken on a mountain at 12,000 to 17,000 feet or above, well beyond the roughly 5,000 to 8,000 feet of equivalent altitude in a pressurised cabin, so the read-across to line flying is much weaker than the numbers sound. The exposures where they matter are unpressurised general aviation, a depressurisation, and the mountaineering or skiing you do on days off.
Which refractive procedures does the FAA accept for pilots?
The FAA's Guide for Aviation Medical Examiners names radial keratotomy, epikeratophakia, LASIK including wavefront-guided LASIK, SMILE, photorefractive keratectomy, and conductive keratoplasty as accepted refractive procedures for visual acuity correction; that guidance page carries a last-updated date of 27 August 2025 and was read in August 2026. Conductive keratoplasty is handled differently from the rest because it is not considered permanent and regression of visual acuity is expected over time, so it is evaluated individually after a six-month waiting period and certified through an Authorization for special issuance under 14 CFR 67.401. Note that this is a list of corneal procedures plus conductive keratoplasty: a phakic implantable lens is an intraocular operation assessed on a separate pathway, so absence from this list should not be read as prohibition, and presence on it should not be read as clearance for any individual. Acceptance of a procedure in general and your own certification are different questions, and only your examiner can answer the second one.
Does cabin air make dry eye worse after refractive surgery?
The flight deck is a harsher place to recover than the aftercare advice written for the general public assumes, and it is worth knowing the untreated baseline before attributing anything to surgery. Cabin humidity runs at roughly 10 to 20 percent and sometimes below ten, against a human comfort range nearer forty to sixty, and a study of 1,246 Australian commercial pilots found 72.3 percent reporting dry eye symptoms — that is the professional population before anyone has been near a laser. Post-refractive dryness lands on top of that figure rather than instead of it, which cuts both ways: a pilot who develops dry eye after surgery has not necessarily been made unusual by the surgery, but the working environment does make recovery less comfortable than the standard timeline suggests. The certification angle is the one worth carrying, because dryness is one of the ordinary routes to an acuity that fluctuates between measurements, and variability of vision is the exact phrase the FAA's own list of potentially disqualifying effects uses.