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  • Title: VITRECTOMY WITHOUT INNER LIMITING MEMBRANE PEELING FOR MACULAR RETINOSCHISIS IN HIGHLY MYOPIC EYES.
    Author: Qi Y, Duan AL, Meng X, Wang N.
    Journal: Retina; 2016 May; 36(5):953-6. PubMed ID: 26529553.
    Abstract:
    PURPOSE: To determine if it is necessary to peel inner limiting membrane during vitrectomy for macular retinoschisis in highly myopic eyes. METHODS: This retrospective noncomparative interventional case series included 112 eyes of 84 patients with myopic foveoschisis who were treated by 23-gauge 3-port pars plana vitrectomy. During vitrectomy, triamcinolone acetonide was injected into the vitreous cavity to visualize the vitreous. The inner limiting membrane was not peeled, but the posterior hyaloid membrane was removed from the macular surface with active suction or a flute needle. A fluid-gas exchange was carried out using 16% perfluoropropane gas. RESULTS: A total of 106 eyes (95%) exhibited collapse of the foveoschismatic intermediary zone after surgery. Best-corrected visual acuity at baseline and at the end of the follow-up did not differ significantly (1.06 ± 0.74 logarithm of the minimum angle of resolution versus 0.92 ± 0.56 logarithm of the minimum angle of resolution, P = 0.18). An improvement in best-corrected visual acuity of greater than 2 lines was achieved in 84 eyes (75%). A macular hole with retinal detachment was found in 6 eyes (5%) 1 to 8 months after surgery. Intraoperatively, all 112 eyes exhibited vitreous liquefaction. The posterior hyaloid membranes were tightly adherent to the posterior retinal surface and vessels except for 1 eye that had a complete posterior vitreous detachment. There were no or only a very small amount of triamcinolone acetonide particles attached to the surface of posterior retina in 38 eyes, which seemed that a completely posterior vitreous detachment had happened. But these membranes on the surface of the posterior retina can be removed easily, which indicated these membranes were posterior hyaloid membranes instead of internal limiting membranes. CONCLUSION: In the treatment of macular retinoschisis in highly myopic eyes, vitrectomy associated with posterior hyaloid membranes peeling may achieve successful anatomical results. Internal limiting membrane peeling seems unnecessary.
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