Abstract
Purpose:
To assess the characteristic findings and effect of laser capsulotomy in cases of late postoperative capsular block syndrome (CBS).
Methods:
Twenty seven patients diagnosed as late postoperative CBS between July 2010 and August 2013 were retrospectively reviewed. Before and 1 week after capsulotomy, anterior chamber depth (ACD) changes were assessed using ultrasound biomicroscopy (UBM) and IOLMaster. Changes of refractive status and UCVA (uncorrected visual acuity) were also measured at 1 week and 1 month after capsulotomy. For patients who received bilateral cataract surgery, preoperative ACD and axial length of both eyes were compared using IOLMaster.
Results:
Twenty five eyes of 23 patients who underwent laser capsulotomy showed a mean logMAR UCVA improvement of 0.31 ± 0.24 (range, 0.00-0.90). Mean ACD was increased by an average of 0.03 ± 0.05 mm (UBM, P = .035) and 0.72 ± 0.71 mm (IOLMaster, P = .011). Preoperative ACD was deeper in the eye with late postoperative CBS in all bilaterally pseudophakic patients (mean: 3.68 vs. 3.44 mm, P = .068).
Conclusions:
Late postoperative CBS showed refractive changes which were resolved successfully after laser capsulotomy. Convex lens effect of opalescent material in distended capsular bag may play a major role in myopic shift. A greater preoperative ACD is possibly associated with the development of late postoperative CBS.
Keywords: 445 cataract •
578 laser