Optic disc and retinal nerve fiber layer analysis with scanning laser tomography after LASIK.
OBJECTIVE
To examine whether LASIK induces changes in the optic disc and retinal nerve fiber layer using scanning laser tomography.


METHODS
Prospective, consecutive study of 53 myopic eyes in 38 patients (mean age: 35.7 +/- 10.4 years; range: 22 to 58 years). Preoperative average refractive error was -6.0 +/- 2.4 diopters (D) (spherical equivalent) (range: -2.0 to -10.0 D). Optic disc morphology and retinal nerve fiber layer thickness were evaluated with scanning laser tomography preoperatively and at 7 and 13 months postoperatively.


RESULTS
No statistically significant differences were noted between the pre- and postoperative optic disc and retinal nerve fiber layer measurements.


CONCLUSIONS
Our results suggest that transient extreme elevation of intraocular pressure during LASIK does not affect the optic disc morphology or retinal nerve fiber layer thickness in normal myopic eyes for at least 1 year after surgery.
Hamada
Naoki
N
Department of Ophthalmology, University of Tokyo School of Medicine, Tokyo, Japan.
Kaiya
Tadayoshi
T
Oshika
Tetsuro
T
Kato
Satoshi
S
Tomita
Goji
G
Yamagami
Satoru
S
Amano
Shiro
S
D000328:Adult; D005500:Follow-Up Studies; D006801:Humans; D020731:Keratomileusis, Laser In Situ; D007834:Lasers; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D009898:Optic Disk / Q000033:anatomy & histology*; D011184:Postoperative Period; D011446:Prospective Studies; D012165:Retinal Ganglion Cells / Q000166:cytology*; D014054:Tomography