<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing diminished vision, a mass on my eyelid, spots or clouds in my vision, pain in my eye, and white discharge from my eye. What could be the cause of these symptoms?  <response>: Based on your symptoms, its likely that you have chronic glaucoma, a condition that damages the optic nerve and can result in vision loss if left untreated. Well need to conduct some tests to confirm the diagnosis and develop a treatment plan. 