Manual vs femtosecond laser keratoplasties: astigmatism comparison

Session Details

Session Title: Cornea: Surgical II

Session Date/Time: Tuesday 08/09/2015 | 14:00-16:00

Paper Time: 14:40

Venue: Room 11

First Author: : E.Borasio UNITED ARAB EMIRATES

Co Author(s): :                        

Abstract Details

Purpose:

To assess the astigmatic changes between before and after complete suture removal (ROGS) in eyes with keratoconus undergoing keratoplasty with either a manual technique or using the femtosecond laser.

Setting:

Burjeel Hospital, Abu Dhabi, UAE.

Methods:

Retrospective comparative consecutive case series involving 82 eyes which had undergone manual versus 68 eyes which had undergone IntraLase femtosecond laser keratoplasty.

Results:

No statistically significant differences were detected in mean arithmetic astigmatism magnitude before and after removal of sutures (ROGS) between groups. Mean astigmatism pre-ROGS: Manual v Femto PK (4.65±2.17; 6.32±2.91 D; p: 0.15); Manual v Femto DALK (8.50±4.50; 4.25±1.97 D; p:0.20); Femto PK v Femto DALK (6.32±2.91; 4.25±1.97 D; p: 0.14). Mean astigmatism post-ROGS: Manual v Femto PK (5.17±2.60; 5.57±2.18 D; p: 0.68); Manual v Femto DALK (6.62±3.45; 6.67±3.50 D; p: 0.99); Femto PK v Femto DALK (5.57±2.18; 6.67±3.50 D; p: 0.54). ROGS-induced Vector computed astigmatism was greatest in Manual DALK (5.49±1.82 D) and lowest in Femto DALK (3.18±1.87 D, p>0.05)

Conclusions:

Manual and Femtosecond laser PK and DALK induced similar magnitudes of postoperative and post-ROGS astigmatism and the use of the femtosecond laser was not associated with lower astigmatism.

Financial Interest:

One of the authors has significant investment interest in a company producing, developing or supplying product or procedure presented