Yellow patches in the eyes may be caused by conjunctival hemorrhage, pigmentation, impingement, chalazion, etc. The specific analysis is as follows: 1. Conjunctival hemorrhage: Hemorrhage caused by rupture of capillaries under the conjunctiva, resulting in blood spots and blurred vision in the eye. Spontaneous conjunctival hemorrhage generally does not require treatment and can recover on its own. If conjunctival hemorrhage is caused by external factors, it needs to be treated according to the specific cause; 2. Pigmentation: It is caused by pigmentation due to human aging and generally does not require treatment. Digestive system diseases can also lead to pigment deposits on the sclera, manifesting as yellow patches on the surface of the eye, and then the specific cause needs to be identified and treated symptomatically; 3. Ingrown eyelashes: Due to the abnormal position of the eyelashes, they are inverted towards the eye, causing frictional stimulation of foreign bodies in the eye, causing pain, redness, swelling and increased secretions in the eye, and yellow patches will appear if there is exudation of small blood vessels. Patients are advised to surgically treat the abnormal eyelashes to remove the irritation of the inverted eyelashes. 4. Chalazion: Due to high secretion of the lid gland or hyperplasia and hypertrophy of the epithelial cells, a large amount of secretion accumulates in the local tissues, resulting in congestion, redness and swelling of the eyelids and the appearance of yellow patches in the eyes, etc. Local hot compresses can be applied to promote absorption and a visit to the hospital for professional treatment is recommended; 5. Blepharospasm: generally due to long-term UV exposure, smoke, dust, chemical stimulation, etc., slightly raised patches appear at the bulbar conjunctiva near the cornea, which can start off as grayish white and subsequently develop into yellow patches.