Ophthalmology (with 100% Correct Answers)

Occular Adnexia correct answers the supportive structures of the main organ Peri-orbital correct answers Bony orbit, CT, p(x) of the eye in orbit, eyelids, conjunctiva, lacrimal system, extraoccular mm (EOM) Globe correct answers Eye ball itself (cornea- retina) Bony Orbit correct answers pyramidal shaped cavity w/ 4 walls - roof, floor, medial/nasal wall, temporal wall Ocular Aditus correct answers entrance into pyramidal shape structure P(x) of primary gaze correct answers allows for peripheral vision = straight P(x) of secondary gaze correct answers no movement of head eye shift, change in p(x) short temporal wall allows for 90 deg. of peripheral vision Septum correct answers Helps hold eye where it lies, med/lat rectus mm Normal Eye p(x) correct answers tip of cornea should come into a line connecting the sup. & inf. orbital margin tip of cornea extends beyond no more than 2mm allow eye to extend back into orbital no more than 5mm Exophthalmos/Proptosis correct answers Beyond 2 mm abnormal protrusion -pseudoexophthalmos & true exophthalmos Pseudoexopthalmos correct answers not pushing, tip cornea way out True exopthalmos correct answers something retrobulbar space pushes eye beyond 2 mm ext. #1 reason for exophthalmos correct answers congential malformation: big eyes (ox eyes) blepharoptosis, nothing pushing out Blepharoptosis correct answers drooping eyelid in children Keratoconus correct answers cone-shaped deformity of the cornea Myopia correct answers nearsightedness, (ant- post pole) axial length a refractive error in which the focus for light rays from a distant object is anterior to the retina hyperopia correct answers farsightedness, long axial length refractive error in which the focus of light rays from a distant object is behind the retina