Dual Scheimflug-Placido Topography Based Corneal Shape And Aberration Analyses Of Idiopathic Presenile Cataract Patients

To evaluate anterior and posterior corneal shape, anterior segment parameters as well as corneal aberration analyses of idiopathic presenile cataract patients.

Bursa Uludağ University, Faculty of Medicine, Ophthalmology Department

Patients diagnosed with cataract between 18 to 45 years of old age were retrospectively reviewed. Patients with any ocular or systemic diseases and a history of smoking, alcohol and regular drug use were excluded from the study. Congenital cataract patients were also excluded. Anterior and posterior corneal curvature analyses, anterior segment parameters, corneal aberration analyses were examined.

Twenty nine eyes of 19 patients with a mean age was 36.17 years were enrolled. The most common cataract type was posterior subcapsular cataract (58.6%, n=17). The mean maximum keratometry reading was 44.78 diopter (D), the mean keratometric astigmatism was 1.14 D. The mean anterior and posterior elevation were 7.20 and 15.96 micron, respectively. The mean corneal thickness was 539.48 micron, the mean corneal volume was 57.63 mm³, the mean anterior chamber angle was 44.75 degree and the mean anterior chamber volume was 152.2 mm³. Regarding to the corneal aberration values the mean higher order aberration was 0.35 micron, the mean coma 0.22 micron, the mean residual aberration 0.24 micron and the mean spherical aberration was -0.087 micron.

The anterior and posterior elevation values, anterior chamber angle, keratometric readings and corneal volume seems to be higher in idiopathic presenile cataract patients. However, further studies with healthy control group was needed for the make definitive conclusion