Toric intraocular lens implantation in cataract patients with corneal axis deviation

Session Details

Session Title: Toric IOLs & Lens Power Calculations

Session Date/Time: Sunday 15/09/2019 | 08:00-10:00

Paper Time: 08:06

Venue: Free Paper Forum: Podium 3

First Author: : H.Yoon SOUTH KOREA

Co Author(s): :    M. Kim   H. Kim   E. Kim                       

Abstract Details

Purpose:

To evaluate the effect of toric intraocular lens implantation in cataract patient with corneal axis deviation.

Setting:

Bucheon St. Mary’s Hospital, College of Medicine, Catholic University of Korea, Seoul, Korea

Methods:

Total of 112 eyes of 78 patients who underwent toric intraocular lens implantation were included retrospectively. The steep axis deviations (not 180 degree) were classified as 0, 1~9, 10~19, 20~29, 30~39, over 40 degrees. And, the horizontal and vertical axis deviations (not 90 degree) were classified as 0, 1~9, 10~19, 20~29, 30~39, over 40 degrees. The axis deviation was measured with Sagittal map of rotating Scheimpflug camera (Pentacam®: Oculus, Wetzlar, Germany) using PicPickTools (NGWIN, Seoul, Korea). At 2 months after toric intraocular lens implantation, we evaluated the residual astigmatism and uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA).

Results:

The Estimated – residual astigmatism (D) of the 0 degree group (0.48±0.15) was significantly lower than 1~9 (0.94±0.26), 10~19 (0.99±0.31), 20~29 (1.02±0.41), 30~39 (1.16±0.52), over 40 degrees groups (1.06±0.50) in steep axis deviations, respectively at the postoperative 2 months (P<0.05). And, the Estimated – residual astigmatism of the 0 degree group (0.53±0.12) was significantly lower than 1~9 (0.90±0.31), 10~19 (0.99±0.36), 20~29 (0.99±0.40), 30~39 (0.99±0.43), over 40 degrees groups (1.06±0.50) in the horizontal and vertical axis deviations, respectively at the postoperative 2 months (P<0.05).

Conclusions:

The correction of the astigmatism with toric intraocular lens implantation is not accurate in cornea with steep axis deviations and the horizontal and vertical axis deviations. Therefore, we should take care when we perform toric intraocular lens implantation in patient with irregular corneal astigmatism.

Financial Disclosure:

None