Iris. At the same time, inspect each iris. The markings should be clearly defined. With your light shining directly from the temporal side, look for a crescentic shadow on the medial side of the iris. Since the iris is normally fairly flat and forms a relatively open angle with the cornea, this lighting casts no shadow.
Occasionally the iris bows abnormally far forward, forming a very narrow angle with the cornea. The light then casts a crescentic shadow.
In open-angle glaucoma—the common form of glaucoma—the normal spatial relation between iris and cornea is preserved and the iris is fully lit.
This narrow angle increases the risk of acute narrow-angle glaucoma— a sudden increase in intraocular pressure when drainage of the aqueous humor is blocked.
Pupils. Inspect the size, shape, and symmetry of the pupils. If the pupils are large (>5 mm), small (<3 mm), or unequal, measure them. A card with black circles of varying sizes facilitates measurement.
Miosis refers to constriction of the pupils, mydriasis to dilation.
Was this article helpful?
It seems like you hear it all the time from nearly every one you know I'm SO stressed out!? Pressures abound in this world today. Those pressures cause stress and anxiety, and often we are ill-equipped to deal with those stressors that trigger anxiety and other feelings that can make us sick. Literally, sick.