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RISK FACTORS FOR HYPOTONY AFTER SUTURELESS VITRECTOMY IN PATIENTS WITH EPIRETINAL MEMBRANE
Tsuyoshi Mito1, Hajime Okemoto, Makoto Sasaki
1Department of Ophthalmology, Kanazawa Medical University, Uchinada, Japan.
Purpose:
To assess the risk factors for hypotony after sutureless vitrectomy in patients with epiretinal membrane.
Methods:
This retrospective study enrolled patients with epiretinal membrane who underwent vitrectomy at the Kanazawa Medical University. An intraocular pressure of <5 mmHg on the day after surgery was defined as the hypotony group and the other as the nonhypotony group. Background factors were compared between the two groups.
Results:
This study assessed 126 eyes. Thirteen eyes (10.3%) developed hypotony the day after surgery. Hypotony duration was only the next day for three eyes, within three days for four eyes, 1 week for five eyes, and 2 weeks for one eye. Comparisons between the two groups revealed no substantial differences in age, sex, 25-gauge/27-gauge, peripheral retinal tear, posterior vitreous detachment, or combined cataract surgery/vitrectomy alone. Contrastingly, significant differences were found in the axial length ( P < 0.05) and preoperative glaucoma eye drop use ( P < 0.05). Binary logistic regression analysis revealed that ≥ 26.0 mm axial length (OR 4.577, 95% confidence interval [CI] 1.17 to 17.91, P = 0.03) and preoperative glaucoma eyedrops (OR 7.311, 95% CI 1.47-36.45, P = 0.01) were significant risk factors.
Conclusion:
Patients with epiretinal membrane with long axial lengths or preoperative glaucoma eye drop treatment should be carefully monitored for hypotony after vitrectomy; nevertheless, most patients spontaneously recover within a week.
