An eye exam may be used to diagnose glaucoma. The doctor will need to examine the inside of the eye by looking through the pupil, often while the pupil is dilated. The doctor will usually perform a complete eye exam.
During eye exams, your doctor will use tonometry to check your eye pressure. After applying numbing drops, the tonometer is gently pressed against the eye and its resistance is measured and recorded. 
Tonometry is used to check your eye pressure
An ophthaolmoscope can be used to examine the shape and color of your optic nerve. The ophthalmoscope magnifies and lights up the inside of the eye. If the optic nerve appears to be cupped or is not a healthy pink color, additional tests will be run. Pressure in the eye is normal in about 25% of people with glaucoma. This is called normal-tension glaucoma. There are other problems that cause optic nerve damage.
An ophthalmoscope is used to examine your optic nerve
Gonioscopy is used to check whether the angle where the iris meets the cornea is open or closed. This helps your doctor determine if they are dealing with open-angle glaucoma or narrow-angle glaucoma. 
Goniscopy is used to help your glaucoma type
Tests to diagnose glaucoma include:
Acute narrow angle glaucoma occurs primarily in patients who have a shallow space between the cornea at the front of the eye and the colored iris that lies just behind the cornea. As the eye ages, the natural lens behind the pupil grows and the pupil becomes smaller, restricting the ...
The goal of narrow-angle glaucoma treatment is to reduce intraocular pressure as soon as possible. This can be done with systemic medications taken orally or sometimes given intravenously. Topical eye drops for glaucoma also are often used to treat narrow-angle glaucoma. Frequently, laser and/or nonlaser glaucoma surgery may be required to reduce the IOP. ...
Narrow angle glaucoma symptoms usually last as long as the pressure inside the eye remains high.Narrow angle glaucoma is usually very painful because of the sudden increase in pressure inside the eye. In some cases, when the drainage angle is only partially or temporarily blocked, there can be warning attacks ...
In open-angle glaucoma, in that place is each imbalance in the lengthening and drainage of the bright liquid (called the watery caprice) that fills the inspection's previous hall. This may occur for the cause that moreover abundant waterish is produced through . the ciliary carcass or the drainage channels (trabecular ...
Whereas interior bud structures are blocked in this distance, your organ of sight's inner grievance (intraocular distress or IOP) may head and perhaps mar the visual strength that transmits images from the keep in view to the brain. Keen angle-closure (closed-angle or narrow-angle) glaucoma produces symptoms like since shoot worry, ...
