WebThe iris is the colored part of your eye. Muscles in your iris control your pupil — the small black opening that lets light into your eye. The color of your iris is like your fingerprint. It’s unique to you, and nobody else in the world has the exact same colored eye. Cleveland Clinic is a non-profit academic medical center. WebDec 5, 2024 · The eyeball consists of three layers; fibrous, vascular and nervous ( retina ). Functionally, the most important layer is the retina, which receives the external visual stimuli. The posterior pole of the …

Iris of the Eye: Definition, Anatomy & Common Conditions - Cleveland Clinic

WebThe jelly-like substance, the vitreous humour, maintains the shape of our eyeball. The iris regulates the size of the pupil, which in turn regulates the amount of light that enters our eyes, and, finally, the ciliary muscles regulate the power, optical power, of our eyes, depending upon the viewing distance. WebThe sclera, or white of the eye, is a protective covering that wraps over most of the eyeball. It extends from the cornea in the front to the optic nerve in the back. This strong layer of tissue, which is no more than a millimeter thick, gives your eyeball its white color. It also protects and supports your eye. toledo isuzu trucks

Eye expert to make conclusive diagnosis on blinded Akout

WebSo once the light ray comes towards the back of the eye, it will hit a structure known as the retina. The retina coats the entire back of the eyeball. And so the retina is composed of a bunch of different cells known as photo receptors that actually take this light ray and convert it into a neural impulse that the brain can understand. The ... Webeyeball, spheroidal structure containing sense receptors for vision, found in all vertebrates and constructed much like a simple camera. The eyeball houses the retina —an extremely metabolically active layer … WebMar 31, 2024 · Anatomy. The optic nerve is mainly made up of the axons (nerve fibers) of the retinal ganglion cells from the retina. The optic disc or nerve head is the point where the axons from the retinal ganglion cells leave the eye. The nerve head appears as a white circular structure in the back of the eye. There are no photoreceptors on this structure. toledo maps google