pupil

1. Origins, structure, and basic meaning

• Structure: 瞳 has 17 strokes and refers to the pupil or eye.
• Basic usage: 瞳 is read ひとみ, and 瞳孔 is read どうこう.

2. Common pitfalls and similar expressions

• Eyes and pupils
  • 少女の瞳 means the girl's eyes. It appears in a description of light reflected in them.
  • The 瞳 in 瞳孔 is read どう.
  • 瞳孔の変化 means changes in the pupil. 瞳孔 specifically names the anatomical pupil.