1) An eye examination 
Gonioscopy describes the use of a goniolens (also known as a gonioscope) in conjunction with a slit lamp or operating microscope to gain a view of the iridocorneal angle, or the anatomical angle formed between the eye`s cornea and iris. The importance of this process is in diagnosing and monitoring various eye conditions associated with glaucoma.....
examination of the angle of the anterior chamber of the eye with the gonioscope.
A procedure in which a gonioscope (special lens) is used to look at the front part of the eye between the cornea (the clear layer) and the iris (the colored part of the eye). Gonioscopy checks for blockages in the area where fluid drains out of the eye.
<procedure> Examination of the angle of the anterior chamber of the eye with the gonioscope. ... (18 Nov 1997) ... 
(go″ne-os´kә-pe) examination of the angle of the anterior chamber of the eye with a gonioscope.
(goh-nee-AHS-koh-pee) Examination of the anterior chamber angle through a goniolens (special type of contact lens)
Type: Term Pronunciation: gō′nē-os′kŏ-pē Definitions: 1. Examination of the angle of the anterior chamber of the eye with a gonioscope or with a contact prism lens.
A technique used to evaluate the iridocorneal angle to help judge the risk for glaucoma in an eye.