Eyes of Aniso-Axial Length Individuals Share Generally Similar Corneal Biometrics with Normal Eyes in Cataract Population.

ABSTRACT: Aims:To determine the characteristics of corneal biometrics in eyes from aniso-axial length cataract patients compared with eyes from non-aniso-axial length individuals. Methods:This is a retrospective case series. Cataract patients with preoperative binocular measurements were recruited. A binocular axial difference of ?1?mm was considered to indicate aniso-axial length. The anterior segmental biometrics were measured using Pentacam HR (Oculus, Wetzlar, Germany) and IOLMaster 500 (Carl Zeiss Meditec, Jena, Germany). Comparisons of biometrics were made among 4 eye conditions: the longer eyes from aniso-axial length patients, the shorter eyes from aniso-axial length patients, the longer eyes from non-aniso-axial length patients, and the shorter eyes from non-aniso-axial length patients. The aniso-axial length eyes were also stratified into 8 subgroups with axial length (AL) increments of 1?mm, and the biometrics of the subgroups were compared. Results:There was smaller anterior corneal astigmatism in the shorter aniso-axial length group than those in the longer aniso-axial length group (1.01?±?0.70?D vs 1.12?±?0.76?D, P=0.031). The longer aniso-axial length eyes had greater anterior corneal steep curvature (44.13?±?1.69?D vs 43.87?±?1.69?D, P=0.009) and anterior corneal astigmatism (1.12?±?0.76?D vs 1.02?±?0.69?D, P=0.023) compared with longer non-aniso-axial length subjects. Other corneal biometrics were similar between the aniso-axial length eyes and the non-aniso-axial length eyes. In the longer aniso-axial length group, the posterior corneal aberrations of eyes in the ?5?mm subgroups were greater than those in the <5?mm subgroups (0.879?±?0.183??m vs 0.768?±?0.178??m for total aberrations, P < 0.001; 0.228?±?0.086??m vs 0.196?±?0.043??m for high-order aberrations, P=0.036; 0.847?±?0.173??m vs 0.741?±?0.179??m for low-order aberrations, P=0.001). Conclusion:Eyes of aniso-axial length individuals share generally similar corneal biometrics with normal eyes in cataract population. Anterior corneal astigmatism of the longer eyes from the aniso-axial length cataract patients was higher than that of the longer eyes from the non-aniso-axial length individuals. Total posterior corneal aberrations of the longer aniso-axial length eyes increased when the binocular axial difference was over 5?mm.

SUBMITTER: Zhang M 

PROVIDER: S-EPMC7648247 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature