noun
keratoconus
Medical term for a degenerative eye disorder where the cornea thins and bulges into a cone shape.
円錐角膜は、角膜が薄くなり円錐状に突出する病気です。
Keratoconus is a disease in which the cornea thins and protrudes in a cone shape.
Compound of 円錐 (cone) + 角膜 (cornea), directly describing the cone-shaped cornea characteristic of the condition.