10 Questions
What is the primary function of the eyelids?
To offer protection from excessive light or injury
What is the purpose of the eyelids in terms of lubrication?
To distribute tears over the surface of the eyeball
What are the two portions of the eyelid?
Upper and lower
What is the name of the opening between the two eyelids?
Palpebral aperture
Where do the upper and lower eyelids meet?
At the medial and lateral canthi of the eye
Which virus causes epidemic keratoconjunctivitis?
Adenoviruses
What is the common treatment for Herpes simplex virus affecting the eye?
Topical antivirals
What symptoms are commonly caused by Adenoviruses affecting the eye?
Itchy eyes and adhesion of the eyelids
How is Herpes simplex virus that affects the genitals categorized?
Second type
Which of the following is a symptom of the first type of Herpes simplex virus?
Cold sores on the face
Study Notes
Eyelid Function and Structure
- Thin, mobile folds that cover the eyeball anteriorly
- Provide protection from excessive light or injury
- Maintain lubrication by distributing tears over the surface of the eyeball
Eyelid Anatomy
- Divided into upper and lower portions
- Meet at the medial and lateral canthi of the eye
- The opening between the two eyelids is called the palpebral aperture or opening
Viruses and the Eye
- Viruses typically affect the front part of the eye, while infection of the back part is rare.
Types of Viruses
-
Adenoviruses:
- Cause two types of inflammation: epidemic keratoconjunctivitis and pharyngeal conjunctivitis.
- Symptoms include itchy eyes, feeling of a foreign body inside the eye, redness of the conjunctiva, and adhesion of the eyelids.
- Treatment involves using povidone iodine at a concentration of 0.8%.
Herpes Simplex Virus
-
Symptoms:
- Cold sores and facial blisters that may appear after a cold or fever.
-
Types:
- First type: Affects the face, lips, and eyes.
- Second type: Genital, affecting the genitals.
-
Characteristics:
- Typically affects only one eye.
-
Treatment:
- Topical antivirals such as edoxuridine, vidarabine, and trifluoridine.
This quiz covers the structure and functions of eyelids, including their protective and lubricating roles. Topics include the anatomy of the upper and lower eyelids, palpebral aperture, and more.
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