Anterior segment optical coherence tomography measurement of anterior chamber depth and angle changes after phacoemulsification and intraocular lens implantation
Accepted 28 May 2008.
Purpose
To use anterior segment optical coherence tomography (AS-OCT) to evaluate anterior chamber depth (ACD) and angle after phacoemulsification and intraocular lens (IOL) implantation.
Setting
Department of Ophthalmology, Yeditepe University, Istanbul, Turkey.
Methods
Forty-seven eyes (37 patients) had uneventful phacoemulsification and IOL implantation through a clear corneal incision. Anterior segment OCT was performed preoperatively and 1 week and 1 month postoperatively. The angle-referenced (ACD1), pupil-referenced (ACD2), and lens-referenced (ACD3) ACDs, crystalline lens rise (CLR), pseudophakic posterior chamber depth (PPCD), and nasal and temporal iridocorneal angles were measured. Statistical analysis was by a 1-way analysis of variance and Pearson correlation analysis.
Results
The mean age of patients was 70 years ± 10.17 (SD). The mean ACD1 (mean increase) was 3.06 ± 0.25 mm preoperatively, 3.16 ± 0.22 mm at 1 week (0.1 mm), and 3.16 ± 0.19 mm at 1 month (0.1 mm); the mean ACD2, 2.76 ± 0.47 mm preoperatively, 3.62 ± 0.24 mm at 1 week (0.86 mm), and 3.63 ± 0.20 mm (0.87 mm) at 1 month; and the mean ACD3, 2.54 ± 0.46 mm preoperatively, 3.97 ± 0.28 mm at 1 week (1.43 mm), and 3.91 ± 0.25 mm at 1 month (1.37 mm). The mean CLR was 0.497 ± 0.363 mm and the mean PPCD, 0.322 ± 0.150 mm. The increase in nasal and temporal iridocorneal angles was statistically significant at both postoperative examinations (P<.01).
Conclusion
Deepening of the anterior chamber and widening of the nasal and temporal angles after cataract extraction was shown on AS-OCT.
From the Department of Ophthalmology, Yeditepe University, Istanbul, Turkey
Corresponding author: Raciha Beril Kucumen, MD, Yeditepe University Eye Hospital, Sakir Kesebir Sokak Number 28, Balmumcu Besiktas, Istanbul, Turkey.
No author has a financial or proprietary interest in any material or method mentioned.
ABSTRACT