choroiditis
Medical term for inflammation of the choroid layer of the eye.
Choroiditis is a type of uveitis.
ぶどう膜炎 (uveitis) is a broader term for inflammation of the uvea, which includes the choroid. 脈絡膜炎 specifically refers to inflammation of the choroid layer.
Compound of 脈絡膜 (choroid) + 炎 (inflammation). The exact historical derivation is uncertain; the spelling is conventionally associated with the medical meaning.