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Microglia are the resident macrophages of the central nervous system(CNS). Microglia constantly monitor the pathological changes of the surrounding microenvironment. Activated microglia play key roles in tissue protection and injury under the stimulation of various injury factors. Abnormal activation of microglia mediates retinal inflammation and aggravates the original ophthalmic diseases. Our growing understanding of the mechanisms of the interaction between microglia and retinal cells is identifying potential cellular and molecular targets for therapeutic interventions that may be apply to optic nerve injury, diabetic retinopathy, glaucoma and other diseases in the future. In this review, potential links between ophthalmic diseases and microglial activity will be explored.