Its symptoms include, numbness, tingling, fatigue, loss of coordination, muscle spasms, difficulty speaking, eye problems, and depression. Gonioscopy: This test analyses the angle of the eye. Some patients complain of rainbow-colored circles in front of their eyes when they look at bright light. Glaucoma is a condition, in which, the optic nerve of the eye gets damaged, resulting in progressive, permanent loss of vision. After the drop falls into the pocket, close your eyes very gently. The techniques used to do this are tonometry and gonioscopy respectively. If you notice any of the symptoms

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