Effect of incisional direction on astigmatism after implantable collamer lens with a central hole

Session Details

Session Title: Presented Poster Session: Refractive Surgery New Techniques/Instrumentation/Devices III

Venue: Poster Village: Pod 2

First Author: : X.Wang CHINA

Co Author(s): :                           

Abstract Details

Purpose:

To investigate effect of incisional direction on astigmatism after non toric implantable collamer lens with a central hole (ICL V4c) for myopia.

Setting:

Eye & ENT hospital of Fudan University

Methods:

The prospective study comprised 56 eyes of 40 patients corneal astigmatism more than 0.50 diopter (D) and less than 1.60 D and the follow-up period covered 3 months. The experimental group consist of 25 eyes received selective incision (incision in the steep meridian direction) during ICL V4c surgery; the control group consist of 31 eyes received conventional temporal incision. The uncorrected (UDVA) and corrected (CDVA) distance visual acuity refraction, keratometry, corneal topography, and corneal astigmatism were evaluated.

Results:

The SE changed from -8.11±2.39D to -1.27±1.05D postoperatively in the experimental group and from -8.75±2.76D to -1.12±1.30D in the control group. The astigmatism changed from -0.68±0.39D to -0.25±0.25D postoperatively in the experimental group and from -0.58±0.36D to -0.78±0.40D in the control group. The experimental group showed significant reduction in the mean topographic astigmatism from 1.19±0.35D to 0.68±0.14D postoperatively (P < 0.05). The control group did not show a statistically significant change (P > 0.05).

Conclusions:

Selective incision is an effective method in reducing corneal astigmatism during non toric implantable collamer lens surgery.

Financial Disclosure:

None