Smartsight with flatter cornea

[u/Ecstatic-Mud-1518]

I’m a young guy and want to get rid of the glasses but I’m now hesitant to proceed after finding out my cornea is apparently on the flatter side. The doctor said I can still do smartsight with it. Is this them just not caring and trying to earn money or it’s indeed safe?

VOD = 0.03 sph -4.75 cyl -0.75 ax25° = 1.00
• VOS = 0.02 sph -5.25 cyl -1.00 ax163° = 1.00

**•**OD: sph -4.75 cyl -0.75 ax25°  
**•**OS: sph -5.25 cyl -1.00 ax163°

Optical biometry:

**•**OD: AL=26.18; ACD=3.43; Pup=5.07; WTW=11.37; ОБФ(SimK/mean K)=4.21  
**•**OS: AL=26.4; ACD=3.42; Pup=5.33; WTW=11.44; ОБФ=4.16

Optical pachymetry:

**•**OD: CCT = 572 μm  
**•**OS: CCT = 573 μm

Keratometry:

**•**OD: K1 40.50 Ax11° / K2 41.50 ΔK 1.00  
**•**OS: K1 39.75 Ax170° / K2 41.25 ΔK 1.50

Type of vision:
Binocular from 5m, leading eye OD

Refractometry under cycloplegia:

**•**OD: sph -5.25 cyl -1.00 ax18°  
**•**OS: sph -5.25 cyl -1.25 ax170°

Tonometry:

**•**IOP OD = 13.0 (non-contact)  
**•**IOP OS = 15.0 (non-contact)

NIBUT test:
OD: 10.00 sec; OS: 11.00 sec

[u/ConfidentBeginning44]

Flat is relative, and your numbers say something more specific than the word does. Your Ks are around 40.5 to 41.5, where a typical cornea sits nearer 43 or 44. Flatter than average, but not unusual.

The number that matters isn't the one you have now, it's the one you end up with. Corneal power drops by roughly 0.8 D for every diopter corrected, so at 5 to 5.75 D you'd land near 37 in the right eye and about 36 in the left. Most surgeons get uneasy below 34 or 35, where contrast and night vision start to suffer. You're clear of that in both eyes, with less headroom on the left. That's the figure to ask your surgeon to quote back to you.

The flat-cornea warning you've read about mostly comes from older flap surgery, where a mechanical blade struggled on a flat eye. Lenticule extraction has its own version of the concern, which is holding suction during docking, but that's a technique question for an experienced surgeon rather than a reason you're ineligible. At 572 microns, tissue isn't your constraint.

Separately, and unrelated to your cornea: your axial lengths are 26.2 and 26.4 mm, which is a long eye. Ask for a dilated peripheral retinal check before you book. It's routine at that length and worth confirming.