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Objective scatter index sensitive tool for detecting early cataract
The objective scatter index is a more sensitive tool than the VF-14 screening questionnaire for detecting early cataract, according to a study.
The prospective, multicenter study included one eye of each of 1,768 patients being seen for cataract assessment.
Visual acuity was recorded, and cataracts were graded for nuclear color, nuclear opacity, cortical subcapsular opacities and posterior subcapsular opacities. Objective scatter index was measured with the HD Analyzer (Visiometrics SL).
Calculated sensitivity scores for OSI for detecting cataract were 96.5% for cortical cataracts, 93.6% for nuclear cataracts and 100% for posterior subcapsular cataracts; overall sensitivity was 96%; whereas for VF-14, overall sensitivity for all cataracts combined was 68%.
“These results suggest a rationale for using the OSI and VF-14 to quantify and define visual degradation with early lenticular changes,” the researchers wrote. – by Kate Sherrer
Disclosure: The authors report no relevant financial disclosures.
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Galliot F, et al. J Refract Surg. 2016;doi:10.3928/1081597X-20151222-02.