Internal ocular structures

Definition

Internal ocular structures are the anatomical components within the eye, including the lens, retina, optic nerve, and vitreous humor. These structures play critical roles in vision by focusing light and transmitting visual signals to the brain.

5 Must Know Facts For Your Next Test

1. The retina contains photoreceptor cells (rods and cones) that convert light into electrical signals.
2. The lens is responsible for focusing light onto the retina; its shape adjusts for near and distant vision.
3. The optic nerve transmits visual information from the retina to the brain.
4. The vitreous humor is a gel-like substance that helps maintain the eye's shape and optical properties.
5. Intraocular pressure is regulated by fluid dynamics within internal ocular structures and is critical to preventing conditions like glaucoma.

Review Questions

• What role does the retina play in vision?
• How does the lens adjust to focus on objects at different distances?
• Why is intraocular pressure important in maintaining eye health?

Related terms

Photoreceptors: Cells in the retina (rods and cones) that detect light.

Glaucoma:

A condition characterized by increased intraocular pressure, potentially leading to optic nerve damage.

Intraocular Pressure (IOP): The fluid pressure inside the eye, essential for maintaining its shape and function.