Abstract:

Objective    To determine whether topography-guided custom ablation produces acceptable outcomes in the treatment of complex refractive errors. Methods    Topography-guided customized corneal ablations were performed in 32 patients(63 eyes) with complex refractive errors. Corneal surface regularity index, surface asymmetry index, asymmetry component, corneal and ocular higher-order aberrations, uncorrected visual acuity, and best spectacle-corrected visual acuity  were analyzed during the follow-up. Results    Uncorrected visual acuity was better after operation than corrected visual acuity before operation. Astigmatism was significantly  lower after operation［(0.28±0.14)D］ than before operation［(2.46±0.36)D］. The quantity of cornea ablation was saved by 10% or so. There were no adverse reactions in subjective visual quality. No eccentric phenomena were discovered in topography after operation. Conclusion    Topography-guided custom ablation is safe and effective in the management of complex refractive errors.

Key words: Oculyzer; Topography; Customized ablation; Refractive errors