A bright light will be used to assess the appearance of the optic nerve head, and evaluate the presence of glaucomatous structural damage. It is a quick and painless procedure.
The optic nerve is examined at the slit lamp by using special lenses, usually with NO contact with the eye. The optic nerve or optic disc may also be evaluated by using an instrument known as the Direct Ophthalmoscope. The examiner views inside the eye by coming close to the patient with a portable device.
A photograph of the optic nerve may also be taken to keep a record and see any changes over time. The pupil may have to be dilated for this examination.