[Zhonghua yan ke za zhi] Chinese journal of ophthalmology · 2001
[Hypotony following vitreoretinal surgery].
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Liu D, Guo L
Аннотация
OBJECTIVE: To evaluate the incidence and risk factors of hypotony in patients who have undergone vitrectomy for complex retinal detachment.
METHODS: The medical records of 142 patients with complex retinal detachments who underwent vitrectomy were reviewed. Hypotony was defined as a persistent intraocular pressure (IOP) of 5 mmHg or less for 6 months in the follow-up.
RESULTS: Among this 142 patients, hypotony occurred in 16 (11.3%) in 1 year postoperatively. The rate of hypotony in the patients with traumatic retinal detachment was 18.9%, and 6.7% in the patients with rhegmatogenous retinal detachment, the difference being statistically significant (chi(2) = 4.89, P < 0.05). The rate of hypotony in aphakia was 20.9%, and 7.0% for phakia, the difference being statistically significant (chi(2) = 5.67, P < 0.05). The rate of hypotony in the patients with proliferative vitreoretinopathy (PVR)-C class was l.8%, and l5.1% in the patients with PVR-D class, the difference being statistically significant (chi(2) = 3.97, P < 0.05). The rate of post-operative hypotony in the patients with preoperative hypotony was 21.9%, and. 6.9% in the patients without preoperative hypotony, the difference being statistically significant (chi(2) = 5.16, P < 0.05).
CONCLUSIONS: Intraocular hypotony is a complication of vitrectomy for complex retinal detachment. The risk factors for the post-operative hypotony include trauma, aphakia, preoperative hypotony and severe PVR.
METHODS: The medical records of 142 patients with complex retinal detachments who underwent vitrectomy were reviewed. Hypotony was defined as a persistent intraocular pressure (IOP) of 5 mmHg or less for 6 months in the follow-up.
RESULTS: Among this 142 patients, hypotony occurred in 16 (11.3%) in 1 year postoperatively. The rate of hypotony in the patients with traumatic retinal detachment was 18.9%, and 6.7% in the patients with rhegmatogenous retinal detachment, the difference being statistically significant (chi(2) = 4.89, P < 0.05). The rate of hypotony in aphakia was 20.9%, and 7.0% for phakia, the difference being statistically significant (chi(2) = 5.67, P < 0.05). The rate of hypotony in the patients with proliferative vitreoretinopathy (PVR)-C class was l.8%, and l5.1% in the patients with PVR-D class, the difference being statistically significant (chi(2) = 3.97, P < 0.05). The rate of post-operative hypotony in the patients with preoperative hypotony was 21.9%, and. 6.9% in the patients without preoperative hypotony, the difference being statistically significant (chi(2) = 5.16, P < 0.05).
CONCLUSIONS: Intraocular hypotony is a complication of vitrectomy for complex retinal detachment. The risk factors for the post-operative hypotony include trauma, aphakia, preoperative hypotony and severe PVR.