9808 Lecture Notes - Lecture 14: Fovea Centralis, Ciliary Body, Thalamus

• School: University of Canberra
• Department: University of Canberra
• Course: 9808
• Professor: Julie Cooke

Document Summary

Lacrimal puncta = "tears" - production for lubrication and protection. This cavity has 2 chambers (anterior and posterior chambers - iris is the boundary). Within anterior cavity there is aqueous humour which is continuously made and secreted into posterior and drained through canal of schlem. It maintains ocular pressure to keep consistent shape of eyeball (directing pressure posteriorly: involved in support, protection, attachment of muscles that enable movement of eye. Outermost layers: sclera (white part of eye - connective tissue, collagen and elastic fibres) which protects eye and attaches muscle and. Cornea(transparent and plush with sclera) has many collagenous fibres and is window for light. Also has large refractive index (ability to bend light: provides space for blood vessels, regulates amount of light that can enter through pupil. Amount of tension on ciliary muscle, we can flatten or round lens which controls refractive index.