Evaluation of changes in lens optical densitometry using Pentacam HR after renal transplantation: A prospective study

Abstract

Background. To compare the optical densitometric changes in the lens of patients with renal transplantation with those of a healthy group using Pentacam HR.Methods. Twenty-four right eyes of 24 healthy patients (Group 1) were compared with 24 right eyes of 24 kidney transplant recipients. Kidney transplant recipients were evaluated thrice (preoperatively: Group 2a, postoperative 1st month: Group 2b, postoperative 12th month: Group 2c). Corneal endothelial cell count, intraocular pressure, and central corneal thickness of all participants were measured. Lens optical densitometry was measured with Pentacam HR using 3D scanning mode. The optical density of the lens was analyzed by taking the corneal apex as the center and analysing the 12 mm diameter area. (Zone 1: 2.0 mm, Zone 2: 4.0 mm, and Zone 3: 6.0 mm).Results. Corneal endothelial cell count was 2571.2±106.7 cells/mm2 in Group 1 and 2462.8±127.6 cells/mm2 in Group 2a (p=0.001). For lens optical densities, significant differences were observed between the groups in Zone 1 and Zone 3, but the difference in Zone 2 was not significant (p=0.003, p=0.164, p=0.009, respectively). There was a positive correlation between dialysis time and preoperative lens optical densitometry in Zone 1, Zone 2, and Zone 3 (r= 0.496, r= 0.131, r= 0.463, respectively).Conclusions. Although a decrease in lens transparency was observed after kidney transplantation, steroids may cause an increase in lens transparency in the postoperative period. Patients with renal transplantation should be followed closely for possible lens changes in the post-transplant period.