Japan's administrative divisions are divided into prefectures and municipalities.

My friend was diagnosed with keratoconus.

My mother is going to the ophthalmologist because of keratitis.

The amygdala is a part of the brain that controls our emotions.

He read the small print using a magnifying glass.

He was drawing a figure using a set square.

I'm fed up with his crappy posts.

He was trolling on the bulletin board.

He distinguished himself in that project.

His olfactory organ is very sensitive.