Laser retinometry versus clinical estimation of media: a comparison of efficacy in predicting visual acuity in patients with lens opacities.
One hundred eyes with lens opacities requiring cataract extraction were examined preoperatively by laser interferometry. Sixty-eight of these eyes were also clinically evaluated by estimating media clarity with a direct ophthalmoscope. The predicted acuities obtained from these tests were compared to the actual postoperative Snellen acuity achieved. Both tests were found to be useful predictors; correlation coefficients for interferometry and media estimation were .91 and .88, respectively. Each test was less dependable in patients with the densest cataracts, with poorer correlation coefficients reflecting this; interferometry r = .49 and media estimation r = .19. These results confirm that both tests are useful predictors, but their strengths and weaknesses must be understood.
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D000328:Adult; D000368:Aged; D002386:Cataract / Q000503:physiopathology*; D005260:Female; D005654:Fundus Oculi; D006801:Humans; D007368:Interferometry / Q000379:methods; D007834:Lasers; D008297:Male; D008875:Middle Aged; D009887:Ophthalmoscopy; D011446:Prospective Studies; D012160:Retina / Q000503:physiopathology; D014792:Visual Acuity