Silicone Oil Tamponade for Vitrectomy of Hypermyopic Foveoschisis.

The purpose of this study is to explore the efficiency and safety of the surgical procedure of pars plana vitrectomy with silicone oil tamponade and without internal limiting membrane peeling for myopic foveoschisis eyes with high risk of macular hole formation.

Inclusion Criteria:patients with spherical ≥ -8 diopters or axial length ≥ 26.5mm.The foveoshisis combined with foveal detachment was showed on the OCT image. The foveal detachment height≥ 250 um ,and the thickness of sensory retina of foveal detachment was ≤100 um;patients signed the ICF.patients with BCVA ≤0.5,and with visual disturbance symptoms.Exclusion Criteria:patients with macular holeaccompanied or secondary of other fundus diseasereceived vitrectomy due to other diseasesglaucoma cannot be controled by medicationpatients with other retinal or choroidal disease that may affect VApoor patients compliancepoor condition that cannot undertake the surgeryoptical opacities which make it difficult to exam fundus or measure on OCT