I have recently realised that one of my friends had brown scars or marks inside his eyes. He says that he doesn't know what they are and has been there since young. What could this possibly be ? Are those parasites ?
closed as off-topic by Bryan Krause♦, David, another 'Homo sapien', terdon, Chris♦ Jul 28 '17 at 23:14
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Personal medical questions and health advice are off-topic on Biology. We cannot safely answer questions for your specific situation and you should always consult a doctor for medical advice." – Bryan Krause, David, another 'Homo sapien', terdon, Chris