Preliminary clinical study of LenSx femtosecond laser-assisted corneal keratotomy for correction of low or moderate astigmatism in posterior chamber intraocular lens implantation

Session Details

Session Title: Posterior Chamber Phakic IOLs

Session Date/Time: Sunday 15/09/2019 | 14:00-16:00

Paper Time: 14:12

Venue: Free Paper Forum: Podium 3

First Author: : Y.Peng CHINA

Co Author(s): :    M. Zhun   Y. Qin   Y. Zhang                       

Abstract Details

Purpose:

To observe the safety, efficacy, predictability and stability of LenSx femtosecond laser-assisted astigmatic keratotomy for correction of low or moderate corneal astigmatism in intraocular collamer lens (ICL).

Setting:

Chongqing Aier Maige Eye Hospital, Chongqing, China

Methods:

60 patients with low or moderate corneal astigmatism (≤1.50D) were divided into TICL group, AK group (AK+ICL) and femtosecond group (LenSx femtosecond+ICL), and 20 patients in each group. The Target-Induced Astigmatism(TIA) of the three groups were 1.12±0.34,1.09±0.27, 1.14±0.38,respectively (P>0.05). At 1 week and 1,3,6 months after surgery, uncorrected distance visual acuity (UCDVA), difference vector (DV) and surgically-induced astigmatism (SIA) were measured, and astigmatism correction index (CI) was calculated from TIA and SIA. The complications were observed at 6 months after surgery.

Results:

There was no significant difference in UCDVA between femtosecond group and AK group at 1 week and 1 month postoperatively (P>0.05), in 3,6 months femtosecond group was higher than AK group (P<0.05). The DV of femtosecond group was lower than that of AK group at 1 week and 1,3,6 months postoperatively, but the SIA was higher than that of AK group (P<0.05). Compared with TICL group, the DV and SIA of femtosecond group had no significant difference (P>0.05). CI of femtosecond group was higher than AK group (P<0.05), but there was no significant difference compared with TICL group(P>0.05).

Conclusions:

Compared with manual keratotomy, femtosecond laser assisted- keratotomy showed an excellent efficacy for correction of low or moderate corneal astigmatism during ICL surgery. Compared with the traditional astigmatism ICL, it can achieve similar clinical effect and avoid the problems of axial deviatio and long waiting time. This study provides a safe and effective treatment for ICL patients with low or moderate corneal astigmatism.

Financial Disclosure:

receives non monetary benefits from a company producing, developing or supplying the product or procedure presented, receives non monetary benefits from a competing company