Which of the following structure is responsible for light perception?
A. Iris
B. Retina
C. Lens
D. Sclera
查看答案
Which of the following structure is most subjective to external injuries?
A. Retina
B. Choroid
C. Vitreous
D. Cornea
Which of the following structures are transparent in normal eyes?
A. Cornea
B. Lens
C. Neural retina
D. Choroid
Which of the following is true about ptosis?
A. Normally, the upper eyelid of an adult should cover the superior corneal limbus 3-4mm.
B. Ptosis is one or both upper eyelids cover more than 2mm of the inferior corneal limbus.
C. Ptosis is a sign of Horner syndrome.
D. Aponeurotic ptosis is related to age.
Ectropion is ()
A. Eversion of the lower eyelid.
B. The cause might be slackening of the levator muscle.
C. It can cause exposure keratitis.
D. Surgery would be effective treatment.
微信支付 
支付宝支付