The risk factors of shallow anterior chamber after choroidal detachment in glaucoma patients with intraocular surgery.

PURPOSE

To determine the risk factors and clinical characteristics of shallow anterior chamber (AC) following choroidal detachment.

METHODS

A retrospective case-control study. The data of glaucoma patients undergoing intraocular surgery were collected. Based on clinical documentation, patients were categorized based on the presence or absence of a shallow AC after choroidal detachment. Clinical characteristics of eyes that developed a shallow AC were compared to those of controls that had a large AC depth (ACD) after choroidal detachment.

RESULTS

Among 3,492 eyes undergoing intraocular surgery, 99 eyes (2.84%, 95% confidence interval [CI]: 2.28%-3.39%) developed a documented choroidal detachment; 77 eyes met the inclusion criteria, with 52 exhibiting shallow AC and 25 maintaining deep AC. The preoperative ACD was notably deeper in the deep AC group (2.96 ± 0.28 mm) compared to the shallow AC group (2.55 ± 0.59 mm) (P = 0.002). Additionally, the deep AC group had a wider preoperative AC width (ACW) (11.95 ± 0.42 mm) than the shallow AC group (10.92 ± 0.35 mm) (P < 0.001). The shallow AC group was more likely to be phakic (94.2% vs. 76.0%, P = 0.02), more likely to have angle-closure glaucoma (51.9% vs. 28%, P = 0.048), and more likely to have undergone external filtration surgery (96.2% vs. 80%, P = 0.033). Multivariate analysis identified only ACW (odds ratio = 0.56 per 0.1 mm increase, 95% CI: 0.41%-0.75%, P < 0.001) as significantly associated with a shallow AC.

CONCLUSION

The incidence of choroidal detachment post-intraocular surgery was 2.84%. Smaller ACW was the primary risk factor for shallow AC after choroidal detachment, warranting preoperative measurement and tailored surgical planning for high-risk eyes.