Pre-op corrected distance visual activity, changes in CDVA, not tied to post-surgery visual gains
THURSDAY, Sept. 15 (HealthDay News) -- Preoperative questionnaire score and preoperative mesopic and photopic glare disability (GD) show significant correlation with improvements in visual functioning after surgery for symptomatic nonadvanced cataract, according to a study published in the September issue of the Archives of Ophthalmology.
Sofia Charalampidou, M.R.C.P.I., M.R.C.Ophth., from the Whitfield Clinic in Waterford, Ireland, and colleagues evaluated changes in perceived visual functioning after symptomatic cataract surgery with preoperative corrected distance visual activity (CDVA) of 0.4 logMAR or better. Validated questionnaires regarding functional vision satisfaction and a series of visual performance evaluations were completed by 85 patients with cataracts before and two months after cataract surgery. The lens optical density and the cataract opacity scores were noted. Associations between changes in the questionnaire score and changes in visual performance after cataract surgery, as well as preoperative psychophysical measures, lens optical density, and Lens Opacities Classification System III scores, were analyzed.
The investigators identified significant improvement in the mean questionnaire score, from 2.15 to 1.54. Perceived improvements in visual functioning after surgery were found to be significantly associated with the preoperative questionnaire score, mesopic GD, and photopic GD, but not with preoperative CDVA or changes in CDVA. Changes in mesopic and photopic GD were also found to be significantly associated with changes in perceived visual functioning.
"The strongest preoperative indicators for improvement in visual functioning after surgery for symptomatic nonadvanced cataract are GD (tested at low and medium spatial frequencies) and questionnaire score," the authors write.