Early detection, through regular and complete eye exams, is the key to protecting your vision from damage caused by glaucoma
The tonometry test measures the inner pressure of the eye. Usually drops are used to numb the eye. Then the doctor or technician will use a special device that measures the eye’s pressure.
Ophthalmoscopy is used to examine the inside of the eye, especially the optic nerve. In a darkened room, the doctor will magnify your eye by using an ophthalmoscope (an instrument with a small light on the end). This helps the doctor look at the shape and color of the optic nerve.
Perimetry is a procedure where the patient wears a patch over one eye and looks straight ahead at a bowl-shaped white area. At the same time, the computer presents lights in fixed locations around the bowl. The patient indicates each time he or she sees a light, which is why perimetry is able to provide a map of the visual fields. The type of vision loss associated with glaucoma is relatively specific, and perimetry can detect the typical visual-field defects of glaucoma disorder.The perimetry test is also called a visual field test.
Central visual fields of a patient with advanced glaucoma
Gonioscopy is used to detect which type of glaucoma you have. Once the surface of the eye has been numbed with eye drops, your eye specialist will place a special contact lens on your eye. This special lens will allow your eye specialist to look at the eye's drainage system and check if the angle where the iris meets the cornea is open or closed.
Gonioscopy view showing the anterior chamber angle structures