Effect of Flat Cornea on Visual Outcome after LASIK

Table 1

Demographics of all eyes and the three groups stratified by degree of myopia.

Myopia; group (D)	Patient age (years); (mean ± SD)	Number of eyes	Preoperative; SE (D); (mean ± SD)	Preoperative; keratometry (D); (Mean ± SD)	Postoperative; SE; (mean ± SD)	Postoperative; keratometry (D); (mean ± SD)
All eyes	21.8 ± 5.2	812	−8.5 ± 3.2	42.3 ± 4.1	−0.13 ± 1.1	36.36 ± 3.8
−6 to −7.9 D	22.8 ± 8.1	370	−7.2 ± 0.4	44.2 ± 1.7	0 ± 1.1	36.9 ± 4.5
−8 to −9.9 D	21.1 ± 6.9	289	−9.1 ± 0.2	45.2 ± 1.9	−0.1 ± 1.4	36.2 ± 2
−10 to −12 D	21.5 ± 7.2	153	−11.00 ± 0.5	44.9 ± 1.4	−0.3 ± 1.00	36 ± 3.3

SE: spherical equivalence; D: Diopter.