Intraocular Straylight and Contrast Sensitivity After Contralateral Wavefront-guided LASIK and Wavefront-guided PRK for Myopia

Autor(es)

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]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF REFRACTIVE SURGERY; v. 26, n. 8, p. 588-593, AUG 2010.
• Citações Web of Science: 11

Resumo

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)

• Processo FAPESP: 05/53974-6 - Avaliação do sistema visual de pacientes com Doença de Parkinson através de métodos psicofísicos associados à ressonância magnética funcional
• Beneficiário: Claudia Feitosa Santana
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 07/55125-1 - Avaliação eletrofisiológica e psicofísica das vias visuais on e off em jovens com Distrofia Muscular de Duchenne
• Beneficiário: Mirella Telles Salgueiro Barboni
• Modalidade de apoio: Bolsas no Brasil - Doutorado