External Eye

What are the three layers of the external eye?

• macula, ciliary body, fovea

• conjunctiva, vitreous humor, optic nerve

• retina, iris, lens

• sclera, choroid, retina

What is the function of the cornea in the external eye?

• The function of the cornea in the external eye is to produce tears.

• The function of the cornea in the external eye is to protect and also focus light onto the lens.

• The function of the cornea in the external eye is to protect the eye from large foreign objects.

• The function of the cornea in the external eye is to regulate the amount of light entering the eye.

Explain the role of the conjunctiva in the external eye.

• The conjunctiva acts as a protective barrier for the eye and helps to keep it moist.

• The conjunctiva plays a role in the production of tears for the eye

• The conjunctiva helps in the process of focusing the eye on objects

• The conjunctiva is responsible for regulating the amount of light that enters the eye

What is the function of the lacrimal gland in the external eye?

• The function of the lacrimal gland is to produce oil to protect the eye from dryness

• The function of the lacrimal gland is to regulate the amount of light entering the eye

• The function of the lacrimal gland is to produce tears to keep the eye moist and protect it from foreign objects.

• The function of the lacrimal gland is to produce mucus to lubricate the eye

Describe the structure and function of the iris in the external eye.

• The iris is a transparent layer that covers the entire eye.

• The iris is only present in the inner part of the eye and does not have any specific function.

• The iris is responsible for producing tears to keep the eye moist.

• The iris regulates the size of the pupil and the amount of light entering the eye.

What is the role of the sclera in the external eye?

• The role of the sclera in the external eye is to transmit visual information to the brain.

• The role of the sclera in the external eye is to regulate light entering the eye.

• The role of the sclera in the external eye is to provide structural support and protection.

• The role of the sclera in the external eye is to produce tears for lubrication.

Explain the process of accommodation in the external eye.

• The process of accommodation in the external eye involves the adjustment of the lens shape by the ciliary muscles to focus on near or distant objects.

• The process of accommodation in the external eye involves the movement of the eyeball to focus on near or distant objects.

• Accommodation in the external eye is the process of adjusting the size of the pupil to focus on near or distant objects.

• Accommodation in the external eye is the process of adjusting the color receptors in the retina to focus on near or distant objects.

What is the primary function of the pupil in the external eye?

• The primary function of the pupil is to produce tears.

• The primary function of the pupil is to help focus light into the eye.

• The primary function of the pupil is to protect the eye from foreign objects.

• The primary function of the pupil is to regulate the amount of light entering the eye.