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Encyclopedia > Posterior segment

The posterior segment is the back two-thirds of the eye that includes the anterior hyaloid membrane and all structures behind it: the vitreous humor, retina, choroid, and optic nerve.[1] Closeup of a blue-green human eye. ... Vitreous humour is the clear gel that fills the eyeball, lying between the lens and the retina in the eye. ... Human eye cross-sectional view. ... Schematic cross section of the human eye; choroid is shown in yellow. ... The optic nerve is the nerve that transmits visual information from the retina to the brain. ...


Some ophthalmologists specialize in the treatment and management of posterior segment disorders and diseases.[2] Ophthalmology is the branch of medicine which deals with the diseases of the eye and their treatment. ...


References

  1. ^ Posterior segment anatomy
  2. ^ Vitreoretinal Disease & Surgery - New England Eye Center

See also

Sensory system - Visual system - Eye - edit
Anterior segment | Posterior segment 

Sclera | Schlemm's canal | Trabecular meshwork | Cornea | Conjunctiva  anterior segment ... This is a partial list of human eye diseases and disorders. ... This article or section may be confusing for some readers, and should be edited to be clearer or more simplified. ... The visual system is the part of the nervous system which allows organisms to see. ... Closeup of a blue-green human eye. ... anterior segment ... The sclera is the white outer coating of the eye. ... Schlemms canal, also known as canal of Schlemm, is a circular channel in the eye that collects aqueous humor from the anterior chamber and delivers it into the bloodstream . ... This is an area of tissue located around the base of the cornea, near the ciliary body, and is responsible for draining the aqueous humour from the eye via the anterior chamber (the chamber on the front of the eye covered by the cornea). ... The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber, providing most of an eyes optical power [1]. Together with the lens, the cornea refracts light and, as a result, helps the eye to focus. ... The conjunctiva is a membrane that covers the sclera (white part of the eye) and lines the inside of the eyelids. ...


Pupil | Choroid | Tapetum lucidum | Ciliary body | Iris | Anterior chamber | Posterior chamber  The human eye The pupil is the central transparent area (showing as black). ... Schematic cross section of the human eye; choroid is shown in yellow. ... tapetum lucidum in a calf eye, with the retina hanging down The tapetum lucidum (Latin: bright carpet) is a reflecting layer immediately behind, and sometimes within, the retina of the eye of many vertebrates (though not humans); it serves to reflect light back to the retina, increasing the quantity of... Schematic diagram of the human eye The ciliary body is the part of the eye containing the ciliary muscle and ciliary processes. ... The human iris The iris is the grey-brown area. ... The anterior chamber if the fluid-filled space inside the eye between the iris and the corneas innermost surface, the endothelium . ... The posterior chamber is a narrow chink behind the peripheral part of the iris, and in front of the suspensory ligament of the lens and the ciliary processes. ...


Retina | Macula | Optic fovea | Optic disc  Human eye cross-sectional view. ... Human eye cross-sectional view. ... The fovea, a part of the eye, is a spot located in the center of the macula. ... The optic disc or optic nerve head is the point in the eye where the optic nerve fibres leave the retina; it is not sensitive to light and thus also known as the blind spot or anatomical blind spot. Inspection of the optic disc by ophthalmoscopy can give an indication...


Aqueous humour | Vitreous humour | Lens  The aqueous humour is the clear, watery fluid that fills the complex space in the front of the eye which is bounded at the front by the cornea and at the rear by the front surface or face of the vitreous humour. ... Vitreous humour is the clear aqueous solution that fills the space between the lens and the retina of the vertebrate eyeball. ... Light from a single point of a distant object and light from a single point of a near object being brought to a focus by changing the curvature of the lens. ...


 
 

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