A white growth next to the eyeball is usually caused by the following reasons: 1, due to limbal keratoconjunctivitis, caused by autoimmune reaction to keratitis, the patient will have mild eye stinging, foreign body sensation and other symptoms, and at the same time in the edge of the black eyeball white foci will appear. 2, due to vesicular keratoconjunctivitis, is also associated with autoimmune reaction, the main manifestation is the black and white eyeball junction area white semicircular vesicular elevation and accompanied by the surrounding conjunctival vasodilation. The main manifestation is the appearance of white semicircular vesicular elevation at the junction of black and white eyeballs, and is accompanied by the dilation of blood vessels in the surrounding conjunctiva, which may subside on its own in about 2 weeks. 3, due to blepharophimosis, which is the formation of aging and degeneration of the conjunctival tissues, especially those who have been engaged in outdoor work for a long time, are more likely to occur. Generally there is no great harm, just have an impact on the appearance, can be surgically removed.