Abstract:

Objective To investigate the influence of shallow anterior chamber depth on the refractive status after cataract surgery. Design Prospective case series.  Participants 61 cases (61 eyes) of cataract patients with center anterior chamber depth (CACD) less than 2.0 mm were treated as observed group, and 61 cases (61 eyes) with CACD equal to or more than 2.0 mm as control group. All these cases underwent phaocemulcificatin combined with intraocular lens implantation during Dec. 2016 to Jun. 2017 in Beijing Tongren Eye Center. Methods For all the surgery eyes, the axial length was measured before surgery. CACD and refractive status were measured before and after surgery, and 3 months later separately. The CACD and the refractive status were compared between the two groups 3 months after surgery. Correlation analysis was performed between anterior chamber and axial length. Main Outcome Measures  The axial length, the CACD before and after surgery, and the refractive status. Results The CACD changed 1.31±0.14 mm in the research group, and 0.79±0.27 mm in control group (P=0.024). Both shallow CACD eyes and controlled eyes show positive correlation between CACD and axial length (P=0.001, 0.000). Refractive deviation was 0.78±0.16 D in shallow CACD eyes with hyperopia deviation, and was -0.37±0.21 D in controlled eyes with myopia deviation (P=0.032). Conclusion Shallow CACD eyes showed hyperopia deviation postoperatively. So we should consider the refractive deviation when choosing the IOL diopter for implantation.

Key words: shallow anterior chamber, cataract surgery, refractive deviate