38th Exam (Jan 2026) Afternoon Q65 Kaigo Fukushishi
Question (original Japanese)
次のうち、白内障（cataract）で混濁する部位として、適切なものを1つ選びなさい。
- 1網膜
- 2角膜
- 3脈絡膜
- 4硝子体
- 5水晶体
Show answer
Correct answer 5
Key pointCataract is a disease in which the lens becomes cloudy white.
Explanation
Cataract (白内障) is a disease in which the lens (水晶体), which works as the eye's lens, becomes cloudy due to aging and other causes, leading to blurred vision, glare, and decreased vision.
- 1: The retina is the membrane that senses light, where retinal detachment and diabetic retinopathy occur, so it is incorrect.
- 2: The cornea is the transparent membrane on the front of the eyeball, so it is incorrect.
- 3: The choroid is a membrane rich in blood vessels outside the retina, so it is incorrect.
- 4: The vitreous body is the gel-like tissue that fills the inside of the eyeball, so it is incorrect.
Explanation in Japanese
白内障は、レンズの役割をもつ水晶体が加齢などで濁り、かすみ・まぶしさ・視力低下が起こる病気です。
- 1：網膜は光を感じる膜で、網膜剥離や糖尿病性網膜症などが起こる部位なので誤り。
- 2：角膜は眼球前面の透明な膜なので誤り。
- 3：脈絡膜は網膜の外側の血管に富む膜なので誤り。
- 4：硝子体は眼球内を満たすゲル状の組織なので誤り。