Choroideremia

**Definition:** An X chromosome-linked abnormality characterized by atrophy of the choroid and degeneration of the retinal pigment epithelium causing night blindness.

**Tree numbers:** - C11.270.142 - C11.941.160.300 - C16.320.290.142 - C16.320.322.092

**Synonyms:** - Tapetochoroidal Dystrophy, Progressive - Progressive Tapetochoroidal Dystrophy