Ophthalmology Glossary

verb to make or become wider, larger, or more open

• The doctor used eye drops to dilate the patient's pupils during the examination.
• I heard that staring at a bright light can make your pupils dilate.
• I can't believe how dilated my eyes are after watching that scary movie!
• Her heart seemed to dilate with joy when she saw her long-lost friend.

noun a thin discharge of mucus from the nose or eyes

• The patient presented with rheum in both eyes, indicating possible allergies.
• I woke up with a bunch of rheum in my eyes this morning.
• I hate when I have crusty rheum in my eyes after a long nap.
• His rheum-covered eyes reflected his exhaustion after a long day of work.