Corneal biomechanical properties after femtosecond laser-assisted keratoplasty as determined by ocular response analyser

Session Details

Session Title: Presented Poster Session: Cornea: Surgical

Venue: Poster Village: Pod 3

First Author: : T.Senoo JAPAN

Co Author(s): :    S. Yamazaki   K. Nakamura   M. Bando                 

Abstract Details

Purpose:

To evaluate the corneal biomechanical properties of laser-assisted penetrating keratoplasties of Zig-Zag cutting profiles (FKP), conventional trephine-using keratoplasties (TKP), laser-assisted deep anterior lamellar keratoplasty of 120°　cutting profiles (FDALK) and conventional trephine-using DALK (TDALK) measured with the ocular response analyzer.

Setting:

Department of Ophthalmology, Dokkyo Medical University, Tochigi, JAPAN

Methods:

In each of 10 eyes that underwent FKP, FDALK, DSEAK, TKP, or TDALK, as well as 10 normal eyes (Cont), corneal hysteresis (CH: mmHg) and orneal resistance factor (CRF: mmHg) were assessed via Ocular Response Analyzer (ORA).

Results:

The mean CH and CRF values for each method were FKP (10.0±0.48, 9.61±0.84), FDALK (10.1±0.28, 9.51±0.39), DEAEK (9.56±0.20 8.83±0.29), TKP (6.96±0.30, 6.98±0.31), TDALK (9.51± 0.26, 7.96±0.36) and Cont. (10.31±0.15, 10.26±0.17). CH values of the TPK were significantly lower than other groups (p<0.0001). There was a significant difference in CRF of TKP and Cont, DSAEK, FDALK, FKP (p<0.01), however, there was no difference between TKP and TDALK. There was significant correlation in CRF between TDALK and Cont while the change was not observed compared with DSAEK, FDALK, FKP.

Conclusions:

The corneal biomechanical properties after keratoplasty can be increased by modifying incision design.

Financial Disclosure:

None