The correct option is A Eye
Coats disease is a very rare condition found in children and adults where there is abnormal development of the blood vessels behind the retina of the eye. The blood-rich retinal capillaries break open, leaking the serum portion of the blood into the back of the eye. The leakage causes the retina to swell, leading to partial or complete detachment of the retina. Coats disease progresses gradually and affects central vision. It is almost always unilateral (affecting only one eye). If caught early, some level of vision can typically be restored. If not treated until its later stages, complete loss of vision can occur. In the final stage, enucleation (removal of the affected eye) may be necessary.