Optical zone enlargement and recentration after previous myopic LASIK using topography guided custom ablation

Session Details

Session Title: LASIK II

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

Paper Time: 15:03

Venue: Room 10

First Author: : C.Yvon UK

Co Author(s): :    D. Reinstein   T. Archer   E. Miller   M. Gobbe   G. Carp        

Abstract Details

Purpose:

Report results of optical zone (OZ) enlargement and recentration using topography-guided ablation (TGA).

Setting:

London Vision Clinic, London UK

Methods:

75 eyes needing OZ enlargement or recentration after myopic LASIK were included. Corneal topography, corneal wavefront and manifest refraction were used to create the TGA.

Results:

SEQ was -0.52±0.99D (-3.75 to +1.00D) preop and -0.26±0.49D (-1.88 to +0.88D) postop with 72% ±0.50D and 95% ±1.00D. Postop UDVA (vs preop CDVA) was ≤20/20 in 80% (91%) and ≤20/25 in 91% (92%). No eyes lost 2 lines CDVA, contrast sensitivity was normal and unchanged. Spherical aberration was reduced by 39% and HO RMS was reduced by 24%. Topography demonstrated OZ enlargement and reduction of decentration.

Conclusions:

TGA is an effective treatment for decentrations and OZ enlargement. Refractive accuracy was similar to standard LASIK.

Financial Interest:

One of the authors has significant investment interest in a company producing, developing or supplying product or procedure presented, One of the authors receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented