PURPOSE: Patient satisfaction with visual function and perception of dysphotopsias after multifocal FRoV IOL implantation has been associated with residual astigmatism. This study evaluated the effect of residual astigmatism on patient satisfaction with vision at near, as well as the effects on dysphotopsias in patients implanted with a novel FRoV IOL.

METHODS: Postoperative 6 months data of the residual cylinder from 2 prospective, multicenter, clinical trials of a full range of vision (FRoV) enVista Envy IOL (Bausch + Lomb) was collected and analyzed. The residual cylinder values were converted to negative cylinder notation for analysis. The worst residual cylinder over both eyes was considered for analysis. The relationships of residual cylinder with frequency, severity, and bothersomeness of glare and halos and patient satisfaction with near vision were assessed using a logistic regression model.

RESULTS: For patient satisfaction with near vision, the model results suggest that the chances of poor satisfaction reduce as the magnitude of residual astigmatism decreases (odds ratio=0.077, p=0.0212). No statistically significant relationship was observed between the residual cylinder and the frequency, severity, and bothersomeness of glare and halos (all p>0.05). Logistic regression found that residual cylinder was not a predictor of severe response to frequency, bothersomeness, and severity of glare (odds ratio=1.7, p=0.4209) or halos (odds ratio=1.6, p=0.1945).

CONCLUSION: The present study results showed that patients with lower amounts of residual astigmatism exhibited better postoperative satisfaction. The residual cylinder following the implantation of enVista Envy FRoV IOL had no statistical effect on the frequency, severity, and bothersomeness of glare and halos.