BIOLOGY - Physiology - Eye and four vision problems

The video discusses the sensitivity of animals and plants to environmental changes, focusing on human senses and vision problems. It explains how receptor cells in sense organs detect stimuli and relay information to the central nervous system. The video covers four vision problems: color blindness, glaucoma, cataracts, and diabetic retinopathy, detailing their causes, effects, and treatments. Color blindness affects color perception due to issues with cone cells. Glaucoma involves optic nerve damage from eye pressure, often symptomless but detectable through eye tests. Cataracts cause cloudy vision, treatable by surgery. Diabetic retinopathy results from high blood sugar damaging retinal blood vessels.

Describe the condition of glaucoma and its potential effects on vision.

What are cataracts and how can they affect a person's vision?