Preoperative prediction of postoperative visual acuity in patients with cataracts: A quantitative review

Abstract

Many tests of visual function have been proposed as means of preoperatively evaluating cataract patients' surgical outcomes. It is impractical to compare all of these tests simultaneously on the same group of patients. Quantitative reviews apply quantitative methods to comparisons across studies. We compared the results of 52 reports in which cataract patients' postoperative acuity was predicted by means of visually evoked potential, laser interferometry, or projection tests (potential acuity meters-pinhole). The results of each study were summarized in a 2 x 2 contingency table. Summary statistics were compared by means of analysis of variance and post hoc tests. Despite difficulties in metaanalysis, we found the visually evoked potential a better predictor with dense opacities. We recommend standardization in a quest for more precise predictions of postoperative visual acuity.

Use of 10-Hz flash visual evoked potentials in prediction of final visual acuity in diabetic eyes with vitreous hemorrhage

“…Generally, these results support the observations of others that VEPs can be useful in assessing visual function behind media opacities [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] and especially vitreous hemorrhages [4][5][6][7][8][9][10]. Generally, these results support the observations of others that VEPs can be useful in assessing visual function behind media opacities [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] and especially vitreous hemorrhages [4][5][6][7][8][9]…”

Confiabilidade da previsão da acuidade visual pós-operatória de catarata mediante medição da acuidade visual pré-operatória utilizando o retinômetro Heine Lambda 100

“…Os exames que estimam a acuidade visual pós-operatória constituem bom método preditivo, principalmente em cataratas ainda não muito densas (4)(5) . Com este conhecimento, o cirurgião pode apresentar ao seu paciente uma expectativa mais real sobre os resultados visuais pós-operatórios.…”

“…Na expectativa da melhora funcional da visão, vários exames pré-operatórios podem ser indicados, tais como o potencial de visão, interferômetro a laser, super pinhole, "potential acuity meter" (PAM), retinô-metro de Heine (RH) entre outros. Desse modo, podemos prever, com certa margem de segurança, as chances de proporcionarmos boa acuidade visual ao paciente após o procedimento cirúrgico (4)(5)(6)(7)(8) . O RH "Lambda 100" (Retinômetro de Heine, Herrsching, Germany) é um aparelho manual, portátil, de ampla mobilidade e fácil manuseio, por ser independente da lâmpada de fenda.…”

The role of visual evoked potential and electroretinography in the preoperative assessment of osteo‐keratoprosthesis or osteo‐odonto‐keratoprosthesis surgery

“…1984; Mashima et al. 1988; Odom et al. 1988) because it is the most feasible method of measuring functional outcome.…”