18 Questions
What is the function of the Levator palpebral superioris in the eye?
To support the eyelids by extending through both eyelids
Which eye disorder is characterized by the loss of eyelashes and sometimes eyebrows?
Madarosis
What is the common feature of both entropion and ectropion eye conditions?
Both are characterized by misdirection of the eyelids outward
Which eye disorder is associated with supernumerary rows of eyelashes?
Trichiasis
What is the function of Muller’s muscle in relation to the orbicularis oculi muscle?
To be part of the orbital part of the orbicularis oculi muscle
Which eye condition involves a thin membrane that covers the posterior surface of the eyelid?
Ectropion
Which of the following statements about the types of eyelid closure is correct?
A blink is an involuntary movement causing temporary closure of both eyelids, involving the pars palpebralis muscle.
Which of the following is NOT a factor that triggers the blinking reflex?
Closing the eyes tightly
What is the normal rate of spontaneous blinking in a person?
15 blinks/minute
Which of the following statements about the importance of blinking is NOT correct?
It improves visual acuity by temporarily blocking light.
Which of the following statements about the fornices of the conjunctiva is correct?
The lateral fornix is located 14mm from the limbus.
Which of the following statements about contact lens wearers is correct?
Contact lens wearers have a reduced tactile corneal reflex.
What is the primary function of the lacrimal apparatus?
To produce and channel tears to the surface of the eye
Which of the following is a sign of conjunctival pallor?
An unhealthy pale appearance of the palpebral conjunctiva
What is the role of the trigeminal nerve in the control of tears?
It supplies sensation to the eye and detects things on the eye's surface
What is the appearance of a conjunctival hemangioma?
A benign (noncancerous) tumor of tiny blood vessels
Which of the following is a type of conjunctival tumor?
Conjunctival lymphoma
What is the cause of a conjunctival hemorrhage?
Bleeding from a small blood vessel on the surface of the eye
Test your knowledge on the structures within the eye orbit responsible for tear production, drainage, and maintaining eye health. This quiz covers topics like conjunctival pallor, lacrimal apparatus function, injected conjunctiva, and conjunctival cysts.
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