| Full text | |
| Author(s): |
Barreto, Jr., Jackson
[1]
;
Barboni, Mirella T. S.
[2]
;
Feitosa-Santana, Claudia
[2, 3, 4, 5]
;
Sato, Joao R.
[6]
;
Bechara, Samir J.
[1]
;
Ventura, Dora F.
[2]
;
Alves, Milton Ruiz
[1]
Total Authors: 7
|
| Affiliation: | [1] Univ Sao Paulo, Dept Ophthalmol, Refract Surg Serv, Sao Paulo - Brazil
[2] Univ Sao Paulo, Inst Psychol, Dept Expt Psychol, Sao Paulo - Brazil
[3] Univ Chicago, Dept Psychol, Chicago, IL 60637 - USA
[4] Univ Chicago, Vis Sci Labs, Chicago, IL 60637 - USA
[5] Univ Chicago, Inst Mind & Biol, Chicago, IL 60637 - USA
[6] Fed Univ ABC, Ctr Math Computat & Cognit, Santo Andre - Brazil
Total Affiliations: 6
|
| Document type: | Journal article |
| Source: | JOURNAL OF REFRACTIVE SURGERY; v. 26, n. 8, p. 588-593, AUG 2010. |
| Web of Science Citations: | 11 |
| Abstract | |
PURPOSE: To compare intraocular straylight measurements and contrast sensitivity after wavefront-guided LASIK (WFG LASIK) in one eye and wavefront-guided photorefractive keratectomy (WFG PRK) in the fellow eye for myopia and myopic astigmatism correction. METHODS: A prospective, randomized study of 22 eyes of 11 patients who underwent simultaneous WFG LASIK and WFG PRK (contralateral eye). Both groups were treated with the NIDEK Advanced Vision Excimer Laser System, and a microkeratome was used for flap creation in the WFG LASIK group. High and low contrast visual acuity, wavefront analysis, contrast sensitivity, and retinal straylight measurements were performed preoperatively and at 3, 6, and 12 months postoperatively. A third-generation straylight meter, C-Quant (Oculus Optikgerate GmbH), was used for measuring intraocular straylight. RESULTS: Twelve months postoperatively, mean uncorrected distance visual acuity was -0.06 +/- 0.07 logMAR in the WFG LASIK group and -0.10 +/- 0.10 logMAR in the WFG PRK group. Mean preoperative intraocular straylight was 0.94 +/- 0.12 log s for the WFG LASIK group and 0.96 +/- 0.11 log s for the WFG PRK group. After 12 months, the mean straylight value was 1.01 +/- 0.1 log s for the WFG LASIK group and 0.97 +/- 0.12 log s for the WFG PRK group. No difference was found between techniques after 12 months (P=.306). No significant difference in photopic and mesopic contrast sensitivity between groups was noted. CONCLUSIONS: Intraocular straylight showed no statistically significant increase 1 year after WFG LASIK and WFG PRK. Higher order aberrations increased significantly after surgery for both groups. Nevertheless, WFG LASIK and WFG PRK yielded excellent visual acuity and contrast sensitivity performance without significant differences between techniques. {[}J Refract Surg. 2010;26(8):588-593.] (AU) | |
| FAPESP's process: | 07/55125-1 - Electrophysiological and psychophysical evaluation of ON and OFF visual pathways in Duchenne muscular dystrophy young patients |
| Grantee: | Mirella Telles Salgueiro Barboni |
| Support Opportunities: | Scholarships in Brazil - Doctorate |