Gonioscopy is an essential part of the ocular examination of a glaucoma patient or glaucoma suspect. Without this examination it is impossible to assess properly the pathology that may cause impeded aqueous outflow. In addition, it is only when different causes of outflow obstruction are diagnosed that a relevant clinical management plan can be made for the patient. 

To the novice, applying the gonioscopy lens and obtaining a view of the angle structures can initially seem difficult, but with guidance and a little practice this skill can be easily mastered. The challenge is then to become familiar with the features of a normal angle, which can vary slightly from person to person and between ethnic groups. The skill of interpreting pathology seen on gonioscopy then comes with experience.