Biometric factor influence in postoperative results after toric intraocular lens implantation in cataract surgery

Poster Details

First Author: V.De Juan SPAIN

Co Author(s):    B. Carrasco   N. Cortes   D. Galarreta        

Abstract Details

Purpose:

To evaluate the influence of axial length, corneal power, anterior chamber depth and wound location in postoperative results of Acrysof toric intraocular lens implantation in cataract surgery

Setting:

IOBA-Eye Institute, University of Valladolid, Spain

Methods:

This prospective, consecutive case-series observational study included 33 eyes of 20 patients with pre-existing corneal astigmatism that underwent cataract surgery with the AcrySof Toric intraocular lens (IOL) implanted by one surgeon. Preoperative measurements included axial length (AL) with the Zeiss IOL Master, average corneal power (AveK) and anterior chamber depth from endothelium (ACDE) measured with Orbscan II (Bausch and Lomb Surgical). Location of the wound was always orthogonal to the astigmatism axis. The uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA) and refraction was measured 4 weeks postoperatively. Percentile 50 (p50) of AL, AveK and ACDE was selected to divide the sample into two groups. Results considering presence of any factor what limit visual acuity were analyzed.

Results:

The mean refractive cylinder decreased significantly from 2.43D ± 1.41 SD to 0,48D ± 0.44 SD (p<0,001) after surgery. Besides, the Snellen mean uncorrected visual acuity (UCVA) was 0.9 ± 1.41 SD and BCVA was 1.0 D ± 0.3 SD. The mean UCVA was 1.10 for healthy eyes (n=19) and 0.70 for eyes with any factor who limit vision (n=14). The p50 values were 23,77mm (AL), 44.98 D (AveK), and 3.37mm (ACDE). There was not statistical significant relation between UCVA and AL (p=0.10), AveK (p=0.12) and ACDE (p=0.47). Wound location was in the higher K reading axis in 27 eyes and in the lower K reading axis in 6 cases. There were no statistically significant differences in UCVA considering wound location (p=0.58).

Conclusions:

Toric IOL implantation after phacoemulsification was an effective option to improve visual acuity and to correct pre-existing corneal astigmatism. AL, ACDE, AveK and wound location did not affect in the postoperative results. FINANCIAL DISCLOSURE?: No