• Lens: For focusing of objects onto the retina.
• Iris: Controls the amount of light entering the eye by changing the size of the pupil.
• Pupil: This is the aperture (hole) bounded by the iris.
• Retina: The back of the eye where the image is formed. Contains the light sensitive structures rods and cones.
• Rods: Needed for night vision since they are very sensitive to light. Helps to distinguish between black and white objects.
• Cones: Needed for day time vision and for distinguishing between colors.
• Optic nerve: Transmits the image from the retina to the brain.
- The lens divides the eye into anterior and posterior chambers. The anterior chamber contains the fluid called aqueous humor and the posterior chamber contains the gel-like substance called the vitreous body.
- The ciliary muscles control the thickness of the lens. That is, it stretches the lens.
- The Canals of Schlemm drain the aqueous humor.
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