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Questions and Answers
What is the function of Meibomian glands?
What is the function of Meibomian glands?
- Secreting a protective layer over the cornea
- Producing tears to keep the eyes moist
- Filtering out dust and dirt from the eyelids
- Producing oil to coat the surface of the eyes and prevent water component of tears from evaporating (correct)
What is the function of the Palpebral conjunctiva?
What is the function of the Palpebral conjunctiva?
- Lining the lids and being clear with many small blood vessels (correct)
- Secreting oil to coat the surface of the eyes
- Overlying the eyeball with the white sclera showing through
- Producing tears to keep the eyes moist
Which muscle is responsible for moving the eye upwards?
Which muscle is responsible for moving the eye upwards?
- Medial rectus
- Superior rectus (correct)
- Inferior rectus
- Lateral rectus
What is the purpose of the Canthus?
What is the purpose of the Canthus?
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What is a visual field?
What is a visual field?
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Study Notes
Meibomian Glands
- Meibomian glands secrete oils to form the outer layer of the tear film, preventing evaporation.
- Located within the eyelids, they help maintain eyelid structure and function.
Palpebral Conjunctiva
- The palpebral conjunctiva lines the inner surface of the eyelids, providing lubrication for the eye.
- It acts as a barrier against pathogens, protecting the eye from infection.
Eye Movement Muscles
- The superior rectus muscle is responsible for moving the eye upward.
- It plays a crucial role in coordinating vertical eye movements and is one of the extraocular muscles.
Canthus
- The canthus is the corner of the eye where the upper and lower eyelids meet, providing structural support.
- It aids in tear drainage by connecting the eyelids to the lacrimal system.
Visual Field
- The visual field refers to the entire area that can be seen when the eyes are fixed in one position.
- It includes both central and peripheral vision, essential for depth perception and spatial awareness.
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Test your knowledge of eye anatomy and assessment with this quiz. Learn about the visual field, visual pathway, visual reflexes, and more.
