Imaging Capsular Block Syndrome with Anterior Segment Optical Coherence Tomography.

Purpose: To evaluate patients prediagnosed with capsular block syndrome (CBS) using slit-lamp adapted anterior segment optical coherence tomography (SL-OCT) prospectively. Materials and Methods: The eyes of the patients with decreased vision following phacoemulsification and intraocular lens (IOL) implantation prediagnosed as capsular block syndrome were included. Following ophthalmological examination with pupillary dilation, SL-OCT imaging was performed. Results: The study included 17 eyes of 17 cases with late onset CBS. The mean period of time between cataract operation and CBS diagnosis was 66.5± 31.6 months (range 5 to 120 months). The interspace between posterior surface of the IOL and posterior capsule was hyporeflective in six cases and hyperreflective in other cases. The mean posterior displacement of posterior capsule was 1.02 ± 0.74 mm (ran ge 0.35 to 2.17 mm) at the deepest location. Except for three cases all were treated with Neodymium:YAG (Nd:Y AG) laser posterior capsulotomy. Conclusion: Late-onset CBS can be seen years after phacoemulsification surgery and is thought to be occurred by the liquefied retained cortical material. Also, this condition may be misdiagnosed as IOL opacification. SL-OCT is a useful and supportive method in the demonstration and differential diagnosis of CBS. [ABSTRACT FROM AUTHOR]