Blurred eyes are commonly caused by refractive errors, keratoconus, uveitis, glaucoma, cataracts, retinal diseases and optic neuropathy. Refractive errors due to myopia, hyperopia, astigmatism, and presbyopia due to aging can cause blurred vision. The cornea is an important refractive medium and, therefore, can cause blurred vision when lesions occur. Inflammation of the uvea can cause a more significant loss of vision due to irritation of the inflammatory cells, which can manifest as blurred vision. In glaucoma, the optic nerve can be damaged and blurred vision can occur. Cataracts are a clouding of the lens that affects the patient’s vision. Retinopathy can cause edema, hemorrhage, and other abnormalities, resulting in blurred vision. Optic neuropathy also affects the optic nerve, resulting in blurred vision. There are many common clinical lesions that cause blurred vision, therefore, it is recommended that patients should seek timely medical treatment to avoid delay in treatment.