Examination of the Anterior Chamber
The anterior chamber is filled with clear aqueous humor. Cellular infiltration and collection of pus may occur (hypopyon). Bleeding in the anterior cham-ber is referred to as hyphema.
It is important to evaluate the depth of the anterior chamber. In a cham-ber of normal depth, the iris can be well illuminated by a lateral light source (Fig. 1.12). In a shallow anterior chamber there will be a medial shadow on the iris. The pupillary dilation should be avoided in patients with shallow ante-rior chambers because of the risk of precipitating a glaucoma attack. Older patients with “small” hyperopic eyes are a particular risk group.
Dilation of the pupil with a mydriatic is contraindicated in patients with a shallow anterior chamber due to the risk of precipitating angle closure glaucoma.