Clear eyesight does not always mean that the optic nerve is healthy. Glaucoma may develop gradually, and early changes can remain unnoticed without specialised testing. A kota eye doctor can examine the optic nerve and recommend investigations such as OCT scans and visual field tests when needed. Eye pressure measurement is also useful, although normal pressure alone cannot rule out glaucoma. Regular examinations are particularly relevant for people with a family history of the condition or other known risk factors.