Human Eye Structure and Function Quiz

The Human Eye and Its Functions

• The iris controls the amount of light entering the eye by adjusting the size of the pupil.

Light Refraction and Lens

• The cornea is responsible for refracting light rays onto the eye lens.

Historical Contribution to Optics

• Ibn al-Haytham (Alhazen) presented a seven-volume treatise on optics called Kitab al-Manazar.

Anatomy of the Eye

• The anterior chamber is filled with a watery fluid called the aqueous humor.

Suspensory Ligament and Lens

• The suspensory ligament holds the lens in place and allows it to change shape for focusing.

Lens Accommodation

• Accommodation is the term used to describe the ability of the lens to self-adjust its focal length for near and far vision.

Visual Acuity

• The minimum distance at which a normal eye can see distinctly is 25 cm, known as the near point of vision.

Retina Structure

• The optic disc, also known as the blind spot, is the part of the retina that cannot be seen because it lacks light-sensitive cells.

Visual Perception

• The persistence of vision is the phenomenon where an image persists on the retina for a short duration even after the object is removed.

Ciliary Muscle Function

• The ciliary muscle adjusts the shape of the lens for near and far vision by contracting and relaxing.