Hyphema

HYPHEMA

By: Emily Conway, BVMS, MS, MRCVS, DACVO

There are many reasons why an eye may look red, but one important cause is hyphema (bleeding into the anterior chamber of the eye). The anterior chamber of the eye is the space between the cornea (clear layer at the front of the eye) and the iris (the colored part of the eye). The anterior chamber is normally filled with aqueous humor, which is clear and devoid of cells.

Hyphema can occur secondary to ocular trauma, retinal detachment, uveitis, cancer, hypertension, blood clotting disorders, low platelets, and congenital intraocular abnormalities. Hyphema can affect one or both eyes and may be variable in its appearance. Sometimes the blood settles at the bottom of the anterior chamber or it can form a clot in the anterior chamber.

When hyphema is noted, it is important to try to identify the underlying cause. Diagnostics tests of the eye may be recommended, including testing of the intraocular pressure. Systemic diagnostics, including bloodwork, measurement of blood pressure, imaging of the chest and abdomen and infectious disease testing may be recommended.

Since hyphema can lead to other problems, like glaucoma, medical therapy with topical drops or systemic medications may be recommended. If you are concerned that your pet may have hyphema, an examination with your veterinarian or a veterinary ophthalmologist is recommended.