Lamina Cribrosa Changes after Laser In Situ Keratomileusis in Myopic Eyes.
- Author:
Soomin LEE
1
;
Da Ye Diana CHOI
;
Dong Hui LIM
;
Tae Young CHUNG
;
Jong Chul HAN
;
Changwon KEE
Author Information
- Publication Type:Original Article
- Keywords: Lamina cribrosa; Laser in situ keratomileusis; Optic disk
- MeSH: Follow-Up Studies; Humans; Intraocular Pressure; Keratomileusis, Laser In Situ*; Myopia; Optic Disk; Research Personnel
- From:Korean Journal of Ophthalmology 2018;32(2):95-102
- CountryRepublic of Korea
- Language:English
- Abstract: PURPOSE: To determine deep optic nerve head structure changes after transient intraocular pressure elevation during laser in situ keratomileusis (LASIK) for myopia. METHODS: Enhanced depth imaging-optical coherence tomography was performed in each myopic eye that underwent LASIK surgery. Enhanced depth imaging-optical coherence tomography images were created at postoperative 1 day, 1 week, 2 weeks, and 1 month. Lamina cribrosa (LC) thickness, LC depth and prelaminar thickness at the superior, middle and inferior portions of the optic nerve head were measured by two investigators. RESULTS: Forty eyes in 40 patients were included in the present study. During follow-up, there were no significant differences in prelaminar thickness or LC depth. The LC demonstrated increased thickness at postoperative 1 day at all three locations (superior, middle, and inferior) (p < 0.001, p < 0.001, p < 0.001, respectively). However, no significant changes were observed at postoperative 1 week, 2 weeks, and 1 month. CONCLUSIONS: The LC thickness could increase at 1 day after LASIK surgery. However, the thickness will gradually return to baseline morphology. Temporary intraocular pressure increase during LASIK does not appear to induce irreversible LC thickness changes.
