青光眼

• 龶(sprout; seedling)ASSOCIATIVE
• 月(moon; cinnabar red)ASSOCIATIVE

Young green sprouts growing fresh under moonlight evoke the vibrant verdant color of nature.

• ⺌(small light radiating upward)ASSOCIATIVE
• 兀(standing person; upright person)ASSOCIATIVE

Light shining down from above a person standing upright creates the image of 光, meaning light.

• 目(eye)RADICAL
• 艮(hard; stop)PHONO-SEMANTIC

Two eyes looking straight ahead, stubborn and resolute like the character for "firm."