To evaluate the time course of the optical quality and visual performance with a microincision monofocal intraocular lens (Incise).

Hospital Torrecárdenas, Almería, Spain.

Prospective study.

The visual and refractive outcomes were evaluated in eyes with the microincision IOL preoperatively and 1, 3, and 6 months postoperatively. The modulation transfer function (MTF) cutoff frequency, Strehl ratio, and objective scatter index (OSI) were used to measure optical quality. The contrast sensitivity function (CSF) and the visual disturbance index characterized visual performance.

In the 32 study eyes, the mean values preoperatively and 6 months postoperatively, respectively, were MTF cutoff frequency (11.40 cycles per degree [cpd] ± 8.39 [SD] and 23.33 ± 11.68 cpd; P < .001), Strehl ratio (0.078 ± 0.32 and 0.15 ± 0.07; P < .05), and OSI (7.44 ± 3.25 and 1.57 ± 0.26; P < .001). At each spatial frequency, the CSF significantly differed between preoperatively and postoperatively (P < .001). The mean visual disturbance index changed from 0.70 ± 0.28 to 0.31 ± 0.17 (P < .001). For all parameters studied, statistically significant differences were found between the preoperative and postoperatively values, with no differences between the results 1, 3, and 6 months after surgery (P > .05).

Biaxial microincision cataract surgery provided optimum clinical outcomes. The optical quality and visual performance improved significantly 1 month after surgery, with the results remaining stable at 6 months. The postoperative visual function was similar to that in subjects of the same age with healthy eyes.

None of the authors has a financial or proprietary interest in any material or method mentioned.