Comparison of anterior penetrating and intrastromal arcuate relaxing incision in femtosecond laser-assisted cataract surgery

Session Details

Session Title: Challenge of Astigmatism Correction

Session Date/Time: Sunday 14/09/2014 | 17:00-18:30

Paper Time: 18:06

Venue: Capital Hall A

First Author: : S.Choi SOUTH KOREA

Co Author(s): :    S. Lim   W. Whang   Y. Lee   K. Hwang   C. Joo  

Abstract Details

Purpose:

To compare effect and stability of astigmatism correction between anterior penetrating and intrastromal arcuate relaxing incision by femtosecond laser.

Setting:

Seoul St. Mary’s Hospital, Seoul, Korea.

Methods:

Patients with preoperative corneal astigmatism 0.75 or over were evaluated. We performed femtosecond laser-assisted cataract surgery with arcuate relaxing incision using the Catalys Precision Laser System femtosecond laser (Abbott Medical Optics, Illinois, USA). Patients were grouped according to method of arcuate relaxing incision, anterior penetrating incision group (Posterior uncut 20%, Group 1) and intrastromal incision group (anterior and posterior uncut 20%, Group 2). We analyzed preoperative and postoperative(1, 7, 60days) visual acuity, refraction, keratometry, astigmatic polar value of each group. Patients with preoperative corneal astigmatism less than 0.75 were also evaluated as control.

Results:

25 cases of each group and 15 cases of control were evaluated. Preoperative corneal astigmatism was 1.26±0.68 in group 1, 1.17±0.88 in group 2, 0.51±0.29 in control and there was no statistically significant difference between group 1 and group 2. Change of astigmatic polar value in postoperative day 1, 7, and 60 was -0.86, -1.49, -1.45 in group 1, -1.18, -1.45, -1.30 in group 2, and -0.54, -0.40, -0.58 in control. Statistically significant differences were found in results of day 1 and 60 between groups, day 1 and 7 in each group.

Conclusions:

Both methods of arcuate relaxing incision were effective in correction of astigmatism and Anterior penetrating incision was more effective than intrastromal incision. Intrastromal incision shows more earlier astrimatism correction. Further research for lont-term effect and appropriate normagram of both methods is needed.

Financial Interest:

NONE