临床与实验眼科学杂志
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Comparing Anterior Segment Ocular Coherence Tomography (AS-OCT), Ultrasound Biomicroscopy (UBM) and Pentacam in Evaluating the Changes of the Anterior Segment Parameters after Phacoemulsification

Ahmed Ghoneim, Tamer Wasfy, Yasser Serag, Hazem Elbedewy, Elsayed Nassar, Ahmed Elmaria Saed AM and Tamer Salem

Background: Cataract extraction affects some of the anterior chamber (AC) parameters like AC depth (ACD) and the width of the AC angle. Different techniques are used to evaluate these effects before and after cataract extraction.
Purpose: To evaluate the results of Anterior Segment Optical Coherence Tomography (AS-OCT), Ultrasound Biomicroscopy (UBM) & Pentacam in evaluating the changes of the anterior segment parameters after cataract extraction.
Methods: Prospective non-randomized study including 40 cataractous eyes. AS-OCT, UBM and Pentacam were done 1 week before, 1 week and 1 month after phacoemulsification with intraocular lens (IOL) implantation, to measure ACD, AC angle width, and central corneal thickness (CCT).
Results: ACD depth, AC angle width and CCT increased significantly 1 week and 1 month after surgery than the preoperative level (p<0.001), with no significant difference between 1 week and 1 month after surgery (p>0.05). No significant difference between the 3 techniques in most measures either pre- or postoperatively.
Conclusion: ACD, AC angle width and CCT are significantly increased after uneventful phacoemulsification surgery and Foldable IOL implantation, which have become stabilized after 1 month of surgery with no significant difference in the measures given by AS-OCT, UBM or Pentacam.