Evaluation of Anterior Segment Parameters Using Scheimpflug Topography Device in Patients Undergoing Nd:YAG Laser Posterior Capsulotomy: Retrospective Study

Objective: After cataract surgery, a frequent problem is the development of posterior capsule opacification (PCO) which can affect the quality of vision. Our study aims to analyze various eye parameters, such as refraction, intraocular pressure (IOP), intraocular lens (IOL) position, lens rise (LR), and anterior chamber parameters using Sirius Topography, in order to demonstrate the changes that occur after Nd:YAG capsulotomy. Material and Methods: In this retrospective study, we reviewed the records of 60 patients post-cataract surgery and Nd:YAG capsulotomy. Twenty-four patients were selected. The evaluation included corrected distance visual acuity (CDVA) and IOP measurements with applanation tonometry. Sirius Topography assessed parameters like anterior chamber depth (ACD), LR and astigmatism angle. Measurements pre- and postNd:YAG treatment were compared, and patients were followed up after one week. Results: The study showed a significant negative correlation (p<0.05) between the change in spherical equivalent and alterations in ACD and horizontal anterior chamber tilt following the Nd:YAG posterior capsulotomy procedure. CDVA increased significantly (p<0.05) after the procedure compared to before. LR also showed a significant increase (p<0.05) compared to pre-procedure measurements. Conclusion: In conclusion, the study found that Nd:YAG posterior capsulotomy is an effective way to enhance visual acuity. Sirius topography can be used to measure LR easily. While rare instances of IOL displacement may occur, particularly posteriorly but occasionally anteriorly in the axial plane, it holds minimal clinical significance.