4. Limbal dermoids
Limbal dermoids are benign tumors that could occur anywhere in, on, or around the eye. They are congenital — i.e. present since birth. The most common spot for limbal dermoids to form is in the cornea. These are referred to as corneal limbal dermoids. In limbal dermoids, various types of tissue that aren’t normally found in the eye may be present. These include muscle, fat, cartilage, skin, bone, and even teeth in some very rare cases.
These limbal dermoids partially obstruct the cornea, impairing its ability to focus light onto your retina. It is very rare for a limbal dermoid to become cancerous. That being said, it can still cause issues due to its obstructive nature such as hyperopia. Surgical excision is the preferred treatment for limbal dermoids. Patients with limbal dermoids may suffer from dry eyes or double vision, but both will likely dissipate after treatment.