1 - Opth - Introduction and Anatomy - Eyelids and Conjunctiva

Question 1

Muscles that control eyelid opening and closing and their innervation?

Answer 1

opening - levator palpebrae superioris - oculomotor nerve

closing - orbicularis oculi muscles - facial nerve

Question 2

Three parts of conjunctiva ?

Answer 2

palpebral (tarsal) - lines eyelids
ocular - covers eyeball over the anterior sclera
fornix - forms junction between bulbar and palpebral conjunctivas

Question 3

Conjunctiva - from where to where? contain what?

Answer 3

margins of eyelids to limbus

meibomian glands - modified sebaceous glands at rim of eyelids

Question 4

Normal eyelid position?

Answer 4

lower lid should touch cornea at 6 oclock

upper lid crosses cornea by 2-3mm

Question 5

Causes of eyelid retraction

causes of eyelid protrusion

Answer 5

retraction - usually graves opthalmopathy

protrusion - exopthalmos - graves, orbital cellulitis, malignancy, trauma