What is a small white spot on the iris of eye?

A small white spot on the iris of the eye is likely to be a corneal fleck. Corneal flecks are small, painless, white or gray spots on the cornea, which is the clear outer layer of the eye that covers the pupil and iris. They are often caused by injury to the cornea, such as a scratch or abrasion, but they can also be caused by infection, inflammation, or other medical conditions. Corneal flecks are usually not a cause for concern and do not require treatment, as they often resolve on their own over time. However, if you have a corneal fleck and are experiencing pain, changes in vision, or other symptoms, it is important to see an eye doctor for evaluation and treatment.