India, Aug. 20 -- Glaucoma, often called the silent thief of sight, is an optic disorder that can cause irreversible vision loss. What makes it especially dangerous is that it develops quietly, without noticeable symptoms in the early stages.

In an interview with HT Lifestyle, Dr. Vineet Sehgal, senior glaucoma specialist, Sharp Sight Eye Hospitals said, "Most of the times, the patient might not be knowing that he is having glaucoma. Glaucoma significantly affects the optic nerve, and when the symptoms become pronounced, it indicates permanent damage." Also read | Doctors call glaucoma the 'silent thief of sight': Here's how to stop it and save your eyes from permanent blindness

Dr. Vineet Sehgal further listed the red flags of glaucoma...