You’re at the console. Don’t blind him.

Your patient is −6.25 D. Bring him to 0.00 — land within ±0.25 D for a perfect 20/20.

Hold FIRE to ablate — but only while the pupil is centered in the ring and the tracker says LOCKED. The eye drifts, saccades, and blinks. Fire sloppy and irregularity climbs; ablate past 180 µm and the stromal bed fails.

Drag anywhere to look around the suite. The camera pushes in when treatment starts — and slows down when you hit plano.

How it works, like the real thing: the excimer laser (193 nm) removes ≈0.25 µm of tissue per pulse — a −6.25 D correction over a 6.5 mm zone needs ≈88 µm by the Munnerlyn formula. The cornea starts at 540 µm; the flap takes 110 µm, and the residual stromal bed must never drop below 250 µm or the eye is in real trouble. The tracker loses lock when the eye drifts — firing then is how patients get hurt.

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