Eye Anatomy

noun the colored part of the eye that surrounds the pupil

• The iris is the colored part of the eye that controls the size of the pupil.
• I love the way your irises change color depending on the light.
• Her irises were so trippy, man.
• The iris of the camera lens captured the beauty of the sunset perfectly.

noun a piece of glass or other transparent material with curved sides for concentrating or dispersing light rays

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• The camera lens captures sharp images with great clarity.
• Make sure to clean your glasses lens before you put them on.
• I can't see anything without my contacts lens in.
• His perspective on the issue shifted when he looked through a different lens.

noun the dark circular opening in the center of the iris of the eye, varying in size to regulate the amount of light reaching the retina

• The teacher noticed that the pupil was struggling with the math problem.
• The pupil asked for help with their homework.
• The cool kids at school always hang out with that pupil.
• The artist considered the canvas to be a pupil waiting to be filled with creativity.

noun a ring-like muscle that normally maintains constriction of a natural body passage or orifice and that relaxes as required by normal physiological functioning

• The sphincter muscle plays a crucial role in controlling the release of waste from the body.
• I heard that if you have a weak sphincter, you might have trouble holding in gas.
• Dude, I think I strained my sphincter trying to lift that heavy box.
• His sphincter tightened with fear as he approached the edge of the cliff.

noun a transparent, colorless membrane that envelops the vitreous humor of the eye

• The hyaloid membrane is a transparent layer that surrounds the vitreous humor in the eye.
• I heard that the hyaloid thing in your eye is what helps you see clearly.
• I think my hyaloid is acting up because my vision has been blurry lately.
• His vision was so clear, it was like he had a hyaloid membrane protecting his sight.

noun The abducent nerve is the sixth cranial nerve, responsible for controlling the movement of the lateral rectus muscle of the eye.

• The abducent nerve is responsible for the movement of the eye away from the midline of the body.
• If your abducent nerve is not functioning properly, you may experience difficulty moving your eyes to the side.
• I heard that dude pulled a muscle in his abducent nerve from staring at his phone too long.
• When faced with a difficult decision, it's like my abducent nerve is pulling me in opposite directions.