![]() ![]() The eye condition those with Usher syndrome suffer with is Retinitis Pigmentosa (RP). Optic Nerve and beyond: the optic disc is the front part of the optic nerve which passes from the eye to make connections throughout the brain.. Optic Disc: the nerve cell connections from all the rods and cones travel to the optic disc, a small, yellow, oval structure which can be seen through an ophthalmoscope. Choroid: located behind the retina, it consists of a large network of blood vessels that transport oxygen and other nutrients to the retinal pigment cells. Retinal Pigment Epithelium: a dark coloured layer of cells underlying the retina responsible for providing oxygen and other nutrients to the rods and cones. Rods: although some are placed near the macula, the majority of rods are spread out to cover the rest of the retina. Cones: concentrated around an area of the retina called the macula.They are so described because of their appearance under a microscope. Retina: situated at the back of the eye, the retina consists of millions of nerve cells which are divided into two main groups – rods and cones. Posterior Chamber: this is filled by the vitreous humour which has the appearance of transparent jelly. Anterior Chamber: a fluid with the consistency of water circulates around this chamber.It divides the eye into two parts – anterior and posterior chambers. ![]() Lens: situated immediately behind the iris and pupil is a transparent disc with both sides being convex.The pupil constricts in response to bright light and dilates in low levels of light. Pupil: in the middle of the iris is the pupil, a transparent aperture which appears black. .It is a circular muscle which responds to bright light by contracting, making the pupil smaller. Iris: through the cornea the iris can be seen, which is that part of the eye which gives it colour – blue, brown, green, grey etc. Cornea: the transparent, curved structure at the front of the eye. Sclera: the white material which we normally see as the white of the eye.The eye consists of several parts that are somewhat similar to a camera ![]()
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