Before You Fly: What Can Rule Out Laser Correction

The trip nobody wants to make

The hardest conversation we have is with someone who has flown from Mongolia, taken time off work, and is told at the examination that laser correction is not appropriate for their eyes.

Some of that cannot be avoided, because certain findings only appear on examination. But a meaningful share of it can be anticipated from records and questions before anyone books a flight, and that is worth doing.

What can be checked before you travel

Your prescription history. If your degree of correction has been moving over recent years, that alone may mean the answer is to wait rather than to travel now. Records over several years show this; a single current reading does not.

Previous eye surgery or eye conditions. Anything treated in the past, including in childhood, changes what the examination is looking for and sometimes changes the answer.

General health conditions that affect healing, and medications you take regularly. Some of these matter and some do not, but the time to find out is before the flight.

Whether you have been assessed elsewhere and what you were told. If another clinic declined you, the specific reason is important. Some reasons are structural facts that will not change; others depend on which procedures a clinic offers.

Send these when you enquire. Our coordination team reviews them and will tell you honestly whether the trip looks worth planning.

What can only be established here

Corneal thickness, mapped across the surface rather than measured at one point. This is the most common structural reason laser correction is not possible, and it is not in your optician’s records.

Corneal shape, and specifically whether the pattern suggests tissue that would respond poorly to having material removed. This is the finding most likely to redirect someone from laser correction toward a lens-based approach.

Dark-adapted pupil size, which affects planning and matters particularly for anyone who drives at night.

Tear film measurement. Dry eye rarely rules people out on its own, but it often means treating that first and reassessing, which changes the timeline rather than the answer.

Circumstances that usually mean waiting

Pregnancy and breastfeeding, because refraction can shift during these periods and a measurement taken then may not represent your settled prescription.

An active eye infection or inflammation, which is treated first.

A recent change in prescription, for the reasons above.

None of these is a permanent no. They are reasons the timing is wrong, which is a different thing and worth understanding as such.

Being declined for laser is not being declined for everything

This distinction gets lost often enough to be worth stating directly.

Corneal thickness and shape limit laser procedures because those procedures work by removing and reshaping corneal tissue. An implantable lens works on a different principle and is not constrained in the same way.

So a finding that closes one route may open another. Whether that applies to you is an examination finding rather than a general rule, but it is a reasonable question to ask rather than assuming the answer was final.

How to plan around the uncertainty

Send your records before booking flights, not after.

Ask directly what the preliminary review suggests and what remains unknown until the examination. A clinic willing to tell you what it cannot know from records is telling you something useful about how it works.

If you are travelling anyway, ask what the plan would be if the examination points somewhere other than expected, so that outcome is not being worked out on the day.

Before you book

Send your prescription history, any records of previous eye treatment, and your travel dates. Consultation is available in Mongolian, and our coordination team will tell you what is missing from what you send. Candidacy is confirmed by examination here.

FAQ

Can you tell me before I fly whether I am suitable?

Not with certainty, and any clinic that says otherwise without examining you is not in a position to know. A review of your records indicates whether the trip looks worth planning and can identify reasons to wait, which is why we ask for them at the enquiry stage.

What is the most common reason people are not suitable?

Corneal thickness insufficient for the correction required, and corneal shape findings that suggest tissue would respond poorly to removal. Neither appears in an optician’s records, which is why they are established by examination here.

I was declined at another clinic. Does that settle it?

It depends on the reason. Structural findings such as thickness will not change. But not every clinic offers every procedure, so a finding that rules out laser correction may still leave a lens-based option. Send the records and the reason you were given.

Does dry eye mean I cannot have surgery?

Usually not by itself. The more common path is to treat the dryness first and reassess, which changes the timeline rather than the answer. Tear film measurement is part of the examination here.