Patients often ask if stones can grow in the eyes. I have only heard of kidney stones, but can stones occur in eyes as small as these? What do eye stones look like? If a patient has a foreign body or a gritty feeling in the eye, and if you look closely under the light after opening the eyelid, you can find one to several small yellow dots on the inner surface of the eyelid, which looks like a beach, beware of eye stones! The correct name for ocular calculi is conjunctival calculi, which are found on the conjunctiva as shedding epithelial cells, or as clots of dust combined with ocular secretions, etc. They are the product of lipid hardening, with no or very little calcium deposition, and are not true stones. Early or not serious, usually no symptoms, more serious when the gritty feeling will appear, and only then need to be treated and the eyes are prone to oil, the inner lid oil hole blocked, or the eyes have inflammation, also more likely to have eye stones. However, there are many cases where the cause of the stones cannot be found, and they recur frequently, even in one eye but the other is fine. If you do not have any clinical symptoms, you do not have to worry too much about whether you have eye stones. If you have a mild foreign body sensation or itching or pain, you can apply ice to your eyes to temporarily relieve the pain, but if the pain and itching persist for a long time, you need to see an ophthalmologist. However, excessive stone picking can affect eye health because the conjunctival surface will be scarred when picked by a needle, and too many scars will cause the conjunctival surface to become uneven, sometimes resulting in a constant feeling of dryness and discomfort. In addition to allergies, people who often wear contact lenses but do not pay attention to cleaning, often rub their eyes with their hands, and those who draw eyeliner too close to the inside of the eyelid, blocking the oil hole, are also at risk. In addition, people with chronic inflammation of the conjunctiva, trachoma, allergic conjunctivitis, dry eye and other eye diseases are also prone to eye stones. Small eye stones do not produce symptoms if they are covered, so most people do not know they have eye stones. Sometimes the stones are large and only a small piece of the conjunctiva is protruding, but there is a large area underneath or the entire canal may be blocked, which can cause a large wound when removed. It is recommended to remove symptomatic stones, but for stones without symptoms, it is not necessary to remove them because they may scar the conjunctiva and cause unevenness on the surface, sometimes causing a foreign body sensation.