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

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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


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.


Department of Ophthalmology, Dokkyo Medical University, Tochigi, JAPAN


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).


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.


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

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