red eye

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(1) Conjunctivitis evoked by allergens, bacteria, viruses, air-borne irritants, or linked to episcleritis, corneal ulcer—infectious or traumatic—uveitis, glaucoma—acute or chronic—cellulitis, etc.
(2) Blood-shot eyes due a lack of sleep, which explains the term, ‘red eye special’—a long night flight, usually understood to be from the west to the east coast of the US. Cf Pink-eye
Vox populi A popular term for the appearance of the eyes of those who have been photographed with a flash under low-light conditions. Red eye is characteristic of a normal retina. The finding of one red eye and the other white—especially in young children—is often associated with retinoblastoma, a malignant tumour of the eyeball (bulbus oculi) and should be a trigger for an immediate eye exam in a toddler or infant.

red eye

1. Conjunctivitis evoked by allergens, bacteria, viruses, air-borne irritants, or linked to episcleritis, corneal ulcer–infectious or traumatic, uveitis, glaucoma–acute or chronic, cellulitis, etc. Cf Pink-eye.
2. Blood-shot eye.

red eye



the organ of vision. In the embryo the eye develops as a direct extension of the brain, and thus is a very delicate organ. To protect the eye the bones of the skull are shaped so that an orbital cavity protects the dorsal aspect of each eyeball. In addition, the conjunctival sac covers the front of the eyeball and lines the upper and lower eyelids. Tears from the lacrimal duct constantly wash the eye to remove foreign objects, and the lids and eyelashes aid in protecting the front of the eye.
The eyeball has three coats. The cornea is the clear transparent layer on the front of the eyeball. It is a continuation of the sclera (the white of the eye), the tough outer coat that helps protect the delicate mechanism of the eye. The choroid is the middle layer and contains blood vessels. The third layer, the retina, contains rods and cones, which are specialized cells that are sensitive to light. Behind the cornea and in front of the lens is the iris, the circular pigmented band around the pupil. The iris works much like the diaphragm in a camera, widening or narrowing the pupil to adjust to different light conditions.
The optic nerve, which transmits the nerve impulses from the retina to the visual center of the brain, contains nerve fibers from the many nerve cells in the retina. The small spot where it leaves the retina does not have any light-sensitive cells, and is called the blind spot.

eye adnexa
include orbital fascia, ocular muscles, eyelids, tunica conjunctiva, lacrimal apparatus and, in the pig, the orbital ligament.
almond-shaped eye
observed with dehydration in birds, where the eyeball is sunken, particularly in raptors which normally have a prominent, round globe.
blue eye
a common term for corneal edema. See also blue eye.
cancer eye
common lay term for ocular squamous cell carcinoma.
cherry eye
china eye
one with a blue iris.
cross eye
diamond-shaped eye
seen in dogs with sunken eyes and loose skin in the eyelids which drop inwards, such as St. Bernards and Newfoundland. Often contributes to entropion.
eye drop
vestibular nerve lesion will cause the eye on the affected side to deviate downward more than the opposite eye when the head is lifted.
dry eye
fatty eye
permanent protrusion of the lower conjunctival sac; thought to be inherited in some breeds of guinea pigs.
mirror eye
term for congenital cataracts in guinea pigs.
pink eye
eye preservation reflex
red eye
an eye showing dilation of conjunctival, episcleral or ciliary blood vessels.
eye reflexes
includes eye preservation (menace), pupillary light, consensual light reflexes.
eye specialist
eye teeth
see canine teeth.
wall eye, walleye
the irregular distribution of melanin in a blue iris. Seen commonly in dogs with merle coat color and Siberian huskies. Called also heterochromia iridis. In humans, the term refers to exotropia, or divergent strabismus. See also walleye.
eye wash
various medicated solutions used to flush the eye; called also collyria.
watch eye
one with an iris containing blue and yellow or brown pigment.
eye white percentage
an estimate of the startle response and an indicator of fear in dairy cattle.
white eye syndrome
congenital cataract associated with congenital bluetongue infection in calves.
eye worm

Patient discussion about red eye

Q. What Causes Conjunctivitis? I woke up this morning with a red eye. My doctor said it's probably conjunctivitis. What causes this?

A. Red eye as a result of conjunctivitis is caused by hyperemia of the superficial blood vessels of the conjunctiva in the eye. This is usually caused due to either an allergic reaction, infection or some other trigger such as a foreign body that penetrated the eye. The blood vessels in the eye become engorged and therefore seen as red on the white sclera. This requires immediate medical examination in order to rule out emergency situations that can lead to permanent damage.

Q. how long does an eye infection suppose to last if I don't usually have any eye problems? I'm not even sure how I got this infection- my eye was itchy a few days ago and after too much touching-I guess-it got real red and swollen. It hurt for like a day and now it just keeps the redness. something to be worried about? any eye professionals there? I don't use glasses or contacts so I'm kinda bad at this- never gave my eye any special attention...thanks!

A. go see an eye dr.a.s.a.p.,it could be anything,you could have something in your eye,you could have pink eye,you could have allergies,but dont risk the wait,go to the doctors...!!!!!!!!

More discussions about red eye
References in periodicals archive ?
FotoNation embedded red-eye reduction technology finds and digitally corrects red eye caused by a reflection of the flash off the cornea of the eye.
Both companies have put a serious effort into ensuring the marketing, training and support offered to customers with Red-Eye is first rate.
Despite numerous attempts by the industry to solve red-eye, a definitive solution has yet to be introduced to the market.
Beyond faces, most Nikon Coolpix cameras can automatically detect and remove red-eye directly within the camera with Nikon's exclusive In-Camera Red-Eye Fix(TM) technology.
75% of digital camera users that use photo software remove red-eye from their digital photos.
Photobot uses Perfectly Clear[TM] to improve brightness, Full Spectrum RGB[TM] to deliver vibrant, life-like colors and FotoNation's Red-Eye[TM] to reduce red-eye.
com/) line of consumer products offer ultra-fast operation and a brand new digital "bag of tricks," sporting new and enhanced features like fixing red-eye right in the camera, enjoying built-in memory to store extra photos and having the full range of Nikon's Scene Modes at your fingertips, to help every shooter take masterful shots on the go or on the job.
5MB of internal memory and compatibility with SD memory cards * One function-One button design * AF assist illuminator * 15 Scene Modes including four with Scene Assist (Portrait, Night portrait, Landscape, Sports); Other Scene Modes (Sunset, Close up, Museum, Beach/Snow, Fireworks show, Back light, Party/Indoor, Copy, Dusk/Dawn, and Night landscape) * New Panorama Assist Mode * Unmatched red-eye reduction capabilities - uses an LED lamp in conjunction with flash and One-Touch Red-Eye Fix(TM) software * Macro shooting capability as close as 1.
Nikon Coolpix 2100 and Nikon Coolpix 3100 'Change the Face' of Digital Pictures With Exclusive New 'Scene Assist' and 'One-Touch Red-Eye Fix(TM)' - Company 'Defies Convention' With Nikon Coolpix SQ
A team official said Karros was experiencing back pain before he left Los Angeles on Sunday on a red-eye for Dodgertown.
One-click photo correction, red-eye removal and a built-in cropping and rotation tool bypass the photo-preprocessing step completely.
Red-Eye Reducing mode helps the subject's eye adjust to the light of the flash, and reduces the annoying red-eye effect that often spoils flash photography.