Vitreous degeneration generally has the following three conditions: 1. Stellate vitreous degeneration is seen in patients over 50 years of age, 75 are monocular in origin, and rarely affects vision. There are reports confirming the association with diabetes. It is characterized by the appearance of calcium-containing lipid white spheres in the vitreous body without vitreous liquefaction. The white spheres are attached to the vitreous fibers and move only slightly when the eye is turned. No special treatment is required. Occasionally, vitrectomy is required to treat fundus lesions. Flashing vitreous liquefaction, also known as vitreous cholesterol deposition degeneration, is characterized by numerous yellowish-white, golden, or multicolored cholesterol crystals located in the vitreous body or anterior chamber, and can be seen in eyes with large amounts of intraocular hemorrhage after repeated severe trauma or surgery. Posterior vitreous detachment is often present, and the crystals are gradually deposited below. On funduscopic examination, glittering crystals in the vitreous float with the eyeball. There is no special treatment. 3. Amyloidosis is autosomal dominant in familial patients, with early manifestation of vitreous clouding in both eyes. In non-familial cases, vitreous changes are rare. Initially, the vitreous clouding appears near the posterior retinal vessels and then progresses forward. The clouding is granular or filamentous at first, and later increases in size, coalesces, and gives the vitreous body a vitreous appearance, vitreous liquefaction, or posterior detachment. The clouding is located in the optic axis region and can cause decreased visual acuity and photophobia; amyloidosis occurs in the vitreous body as well as in the retinal vasculature, the choroid, and the trabecular network, with retinal hemorrhages, oozing, and cotton-padded patches.