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Abstract Background This case report describes two rare cases of Coats disease in nonjuvenile patients with preserved vision. Case presentation Two otherwise healthy Asian males aged 15 and 29 years old presented with unilateral gradual blurred vision and scotoma, respectively. Visual acuity was 6/6 (0 logMAR) with no other abnormalities observed in the anterior segment of the eyes. Both posterior segment examinations and fluorescein angiography revealed retinal telangiectatic vessels, exudation, and hemorrhage. Additionally, optical coherence tomography of the first patient showed subfoveal fluid. Both patients were diagnosed with stage 2 Coats disease. Laser photocoagulation was performed on both patients. The first patient showed initial good response to therapy with resolution of the subfoveal fluid; however, he developed cataract and underwent cataract surgery after 3 years. In the second case, although the exudates and hemorrhage still persisted, the macula was spared and the patient did not have visual complaints. No adverse events were reported, and final visual acuity of both patients remained 6/6. Conclusions Coats disease in adolescence and adulthood may present with good vision. In mild and moderate cases of Coats disease, laser photocoagulation monotherapy may help preserve vision. Nevertheless, as recurrences and complications may still occur later in life, lifelong monitoring is recommended. |
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