KINESIOL 3K03 Lecture Notes - Lecture 5: Extraocular Muscles, Inferior Oblique Muscle, Blurred Vision

• School: McMaster University
• Department: Kinesiology
• Course: KINESIOL 3K03
• Professor: Krista Madsen

Document Summary

Sport context: direct blow to eye itself (of about the same size, ex, squash ball, fist. Orbit: prismatic cone as reach optic nerve deeper, seven bones, extra-ocular muscles and fat. Muscles attach to eyeball in socket to move eye around. Nerves, fat and muscle fit into this space: when there is trauma, all of these pieces are at risk, direct trauma to orbit around the eye or eyeball itself. Trauma to orbit: infra-medial aspect of floor, impact to bottom, lose floor, eye goes down. Muscle can get caught on the bottom (inferior oblique) Eye not able to move up and track properly. Stuck looking down because muscle is trapped (extraocular muscle entrapment: ex, sticks (lacrosse) Trauma to the eyeball: pressure increases quickly, eye shifts and applies pressure to bony encasing around orbit, if energy of impact is great enough, failure.