Coats' disease is a rare eye condition that primarily affects children and young adults. It is characterized by abnormal development of blood vessels in the retina, leading to leakage of fluid and potential vision loss. The condition usually affects one eye and can cause symptoms such as blurred vision or a noticeable white reflection in the pupil. Diagnosis typically involves a comprehensive eye examination, including fundus photography and optical coherence tomography. Treatment options may include laser therapy to seal leaking blood vessels or, in severe cases, surgery. Early detection is crucial to prevent significant vision impairment.