Predictors of Vitrectomy Outcomes in Myopic Foveoschisis

The target population is 30 adults with high myopia and MFS requiring vitrectomy. inclusion critieria * Be 40-90 years old. * Have high myopia, defined as refractive error worse than -6 dioptres and axial length longer than 26 mm. * Be mentally competent to provide informed consent. * Have MFS that meets clinical criteria for surgical intervention, specifically:progressively worsening vision that correlates with structural OCT deterioration over six months; and/or foveal detachment. exclusion criteria * patients with ocular disorders, prior treatments, or other conditions that could affect structural imaging or functional measurements * corneal opacity * uveitis * dense cataract * vitreous haemorrhage * central serous chorioretinopathy * prior retinal laser photocoagulation or photodynamic therapy * previous or concurrent retinal detachment * retinal dystrophies * macular scarring * retinal vascular occlusion * ocular ischaemic syndrome * ungradable OCT/OCTA imaging. * Patients who are cognitively impaired or prisoners are excluded. * Patients considered poor highly myopic surgical candidates are also excluded, including those with myopic choroidal neovascularisation, macular scar, or complete macular atrophy according to the ATN classification. * Participants may also be discontinued from study assessments if OCT imaging is unsatisfactory or ungradable, or if they are unable to complete functional tests such as microperimetry, contrast sensitivity testing, or M-chart assessment.