Refractive Error and Anterior Segment Parametric Changes in Patients with Posterior Capsular Opacification after Nd: YAG Laser Posterior Capsulotomy
Mehdi Alizade1 *, Fateme Eslami1
- Hamadan University of Medical Sciences
Abstract: Cataract is one of the most common causes of blindness in the world, and posterior capsular opacification (PCO) is the most common complication after cataract surgery. Nd: YAG laser posterior capsulotomy is a standard method for the treatment of PCO. The aim of this study was to investigate the effects of Yas laser capsulotomy on anterior segment parameters and lenticular astigmatism.
Methods: In this randomized clinical trial study, a total of 37 eyes from 30 patients with posterior capsular opacity after uneventful phacoemulsification were enrolled and underwent Nd: YAG laser capsulotomy. Full ocular examination, including intraocular pressure and refractive errors, was performed on the samples. The AC depth, volume, and angle were measured by Pentacam before capsulotomy and 3 months following that.
Results: Mean visual acuity improved preoperatively (0.505±0.276) and 3 months after capsulotomy (0.646±0.268); )P<0.001). Mean values of spherical equivalent and cylindrical powers were 1.304±0.268 and -1.142±0.881 dioptre before the procedure and 1.285±0.152 and -1.027±0.807 dioptre 3 months following the surgery, respectively. The difference in cylindrical and spherical errors was not statistically significant after the procedure. Mean scores of lenticular astigmatisms were 0.902±0.735 and 0.621±0.326 dioptre before and after capsulotomy, respectively, which was statistically significant (P=0.018). The changes in the Anterior Chamber depth, angle, volume, and mean central corneal thickness were not statistically significant after capsulotomy
Conclusion: Laser capsulotomy decreased lenticular astigmatism and improved visual acuity. The changes in the AC depth might be a clue for associated complications, such as the changes in refractive errors, intraocular lens position, and intraocular pressure.
