A hemorrhage that partially fills the anterior chamber with blood is called:

A hemorrhage that partially fills the anterior chamber with blood is referred to as hyphema. This condition typically occurs due to trauma or injury to the eye, leading to the leak of blood into the anterior chamber, which is the space between the cornea and the iris. The presence of blood can affect vision and may require medical intervention depending on the amount of blood and associated symptoms.

In contrast, hydrops refers to an abnormal accumulation of fluid, often associated with diseases like keratoconus, whereas hypopion is the presence of pus in the anterior chamber, commonly seen in cases of severe eye infection or inflammation. Hypophoria is not a recognized medical term related to eye conditions. These alternative terms highlight different pathological states within the eye, underscoring why hyphema is the correct choice for describing blood in the anterior chamber specifically.