Remote functional results patients with macular hole and rhegmatogenous retinal detachment surgical treatment with different volumes of preservation of the internal limiting membrane according to microperimetry data

Vaganova Е.Е., Кonovalova К.I.

Rationale: Macular hole is a defect of the retina in the foveolar zone. In combination with rhegmatogenous retinal detachment, this disease can lead to irreversible deterioration of visual functions and requires immediate surgical treatment. One of the trends in modern ophthalmic surgery is to increase the area of preservation of the internal limiting membrane during the macular hole blocking. Despite this, microperimetry data indicate the appearance of microscotomas at the point of peeling initiation and a general decrease in the photosensitivity of the retinal tissue in the membrane removal zone.

Objective: to analyze the dynamics of changes in the retinal functional parameters of patients with macular hole and rhegmatogenous retinal detachment according to microperimetry data after surgical treatment in the late postoperative period.

Methods: Data from 40 patients (40 eyes) diagnosed with macular hole and rhegmatogenous retinal detachment were prospectively studied. Patients in group 1 (20 patients, 20 eyes) underwent surgical treatment, including three-port 25G vitrectomy, perfluoroorganic compound, vitreous body sanitation at the periphery, and silicone tamponade. Membrane peeling was performed during the second operation to remove silicone. Patients in group 2 underwent vitrectomy, membrane staining under the perfluorine layer, membrane peeling with closure of the macular hole with an inverted flap, vitreous body sanitation during the first intervention. The operation was also completed with silicone tamponade. During the second intervention, silicone oil was removed from the vitreous cavity.

Results: When comparing the light sensitivity index of the retinal tissue in the foveolar zone between the groups, a reliable difference in the indices by 1.2 times continued to persist up to one and a half years after the final stage of surgical treatment, there was a predominance of values in patients of the 1st group with a completely preserved membrane (p = 0.043 in comparison with the data of patients of the 2nd group). In three peripheral zones of the macula, during the long-term observation period up to one and a half years after surgery, the indices of patients of the 1st group prevailed by 1.5 times (p = 0.041 in comparison with the data of patients of the 2nd group).

Conclusion: based on the analysis of the dynamics of the functional indices of the retina of patients after surgical treatment of macular hole in combination with rhegmatogenous retinal detachment, the refusal to perform membrane peeling on the detached retina during the first stage of surgical intervention allows to avoid aggressive mechanical trauma to the retinal tissue.

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