What to Expect on the Day of LASIK Surgery: Hour-by-Hour Guide

Arrival and Final Pre-Op (45-60 minutes before surgery)

Check-in: Standard registration, ID verification, payment confirmation if not pre-paid.

Final consent: You'll review and sign surgical consent forms after a final discussion with the surgeon.

Pre-op tests: Quick re-verification of measurements, eye pressure, and final corneal scans.

Mild relaxant (optional): Some centres offer a mild oral sedative (like alprazolam 0.25 mg) for anxious patients. This is not anaesthesia — you stay awake and alert.

Numbing drops: Anaesthetic eye drops applied to both eyes 5-10 minutes before surgery. You'll feel a brief sting, then numbness.

In the Operating Room (15-20 minutes total)

Lying down: You'll lie on your back on a comfortable bed under the laser. The bed slides smoothly into position.

Eye preparation: A small device gently holds your eyelids open (like a tiny speculum). You can't blink, which prevents accidents. Some patients find this slightly uncomfortable for 30-60 seconds.

Step 1 — Femtosecond laser (creates the corneal flap): A suction ring is placed on your eye for 20-30 seconds. You'll feel mild pressure and your vision dims briefly. The laser fires for under 30 seconds.

Step 2 — Excimer laser (reshapes the cornea): The flap is gently lifted (you'll see colours and lights — totally normal). The excimer laser fires for 10-50 seconds depending on prescription. You'll hear a clicking sound and may smell a faint burning odour (vaporised tissue — harmless). The flap is repositioned, smoothed, and the surgery is done.

Total time per eye: 5-10 minutes. Both eyes: 10-20 minutes total.

Immediately After Surgery (15-30 minutes)

• Vision is blurry, like looking through misty glass
• Mild irritation, watering, light sensitivity
• Surgeon does a quick post-op check (slit lamp examination)
• You receive a clear protective shield (or tape) to wear over your eyes
• Lubricating drops are administered
• Brief post-op instructions are given

Most patients are ready to leave within 30-45 minutes after surgery.

First 4-6 Hours After LASIK

• Best activity: rest at home with eyes closed
• Take a 2-3 hour nap if possible
• Light sensitivity: wear sunglasses if going outside or in bright rooms
• Mild burning, gritty sensation: normal, lasts 4-6 hours
• Vision starts clearing within 4-6 hours — many patients notice clearer vision by evening
• Do: Rest, use lubricating drops every 30 mins
• Don't: Touch or rub eyes, watch TV/screens for first 2-3 hours, get water in your eyes

First Night and Next Morning

Sleep: With the protective shield on. Sleep on your back or unoperated side.

Drops: Begin antibiotic and anti-inflammatory drops as prescribed.

Morning: Many patients wake up with noticeably clearer vision. Some mild blurriness from corneal swelling is normal and clears within 1-3 days.

Day-1 follow-up: Mandatory visit for the surgeon to check the flap, measure vision, and start post-op drop schedule.

How Does LASIK Surgery Work?

LASIK works by reshaping the cornea — the clear front window of the eye — so that light focuses sharply on the retina without glasses. Your prescription exists because the eye's focusing power does not match its length. Changing the curve of the cornea fixes that mismatch.

In plain terms:

• For short sight (minus power), the laser flattens the centre of the cornea slightly.
• For long sight (plus power), it steepens the centre by treating around the edge.
• For astigmatism, it evens out a cornea that is curved more in one direction than the other.

In LASIK, a thin flap is made first so the laser can reshape the deeper corneal layer underneath; the flap is then laid back and acts like a natural bandage. Other procedures reach the same goal differently: SMILE removes a tiny disc of tissue through a small opening without a flap, and surface treatments like PRK reshape the surface directly after removing the outer skin layer. The day itself feels similar, but the steps and recovery differ, so ask your centre which steps apply to your procedure.

What You Will Feel: Pressure, Not Pain

LASIK is done under numbing eye drops, and most people feel pressure rather than pain. The numbing drops block pain, but they do not block touch and pressure, so you will notice some things:

• The eyelid holder — a sense of your eye being held open, which some people find odd for the first few seconds
• Pressure during suction — the strongest sensation of the day, lasting well under a minute per eye, with vision dimming or going dark briefly
• Coolness or wetness — from the drops and the surgeon smoothing the flap
• Nothing from the laser pulses themselves — just the clicking sound and possibly a faint smell

If anything feels sharp or painful, tell the surgeon — more numbing drops can be added straight away. Once the drops wear off after surgery, expect grittiness, watering and stinging for a few hours, as described above.

Can You Blink or Move Your Eyes During LASIK?

You cannot blink, because a small eyelid holder keeps your eye open — and you do not need to worry about your eye moving, because several safeguards are built in:

• A fixation light — you will be asked to look at a blinking or coloured light. Your surgeon will talk you through when to look and for how long.
• Lubricating drops — your eye is kept moist so the urge to blink fades.
• Suction — during flap creation the eye is held steady.
• Eye tracking — during the reshaping step the laser follows tiny, involuntary eye movements automatically.
• Automatic pause — if your eye moves too far, the laser stops and resumes once you are back on target.

The only thing to avoid is a sudden large movement of your head or body. If you need to cough, sneeze or move, say so and the surgeon will pause.

How Long Does LASIK Take — and How Long Is the Laser Part?

The laser itself runs for well under a minute per eye; most of your time at the centre is spent on preparation and observation. A typical breakdown, matching the timings above:

• Flap laser (femtosecond) — under 30 seconds per eye
• Reshaping laser (excimer) — roughly 10-50 seconds per eye, depending on your prescription
• Time in the laser room — about 5-10 minutes per eye, 10-20 minutes for both
• Total time at the centre — usually 2-3 hours including checks, drops and post-op observation

Higher prescriptions need slightly longer laser time. Plan to have the rest of the day free.

Can Both Eyes Be Treated on the Same Day?

Yes, most LASIK patients have both eyes treated on the same day, one straight after the other. This is the standard approach for LASIK because vision recovers quickly, it avoids a period of mismatched eyes, and it means one recovery instead of two.

The surgeon uses separate sterile preparation for each eye. Your surgeon may advise treating one eye at a time in some situations — for example with certain procedures that have a slower recovery, unusual eye conditions, or if something during the first eye means it is better to pause. If you would prefer to have your eyes done separately, discuss it at your consultation.