| 释义 |
blindness
blind B0323600 (blīnd)adj. blind·er, blind·est 1. a. Sightless.b. Having a maximal visual acuity of the better eye, after correction by refractive lenses, of one-tenth normal vision or less (20/200 or less on the Snellen test).c. Of, relating to, or for sightless persons.2. a. Performed or made without the benefit of background information that might prejudice the outcome or result: blind taste tests used in marketing studies.b. Performed without preparation, experience, or knowledge: a blind stab at answering the question.c. Performed by instruments and without the use of sight: blind navigation.3. Unable or unwilling to perceive or understand: blind to a lover's faults.4. Not based on reason or evidence; unquestioning: put blind faith in their leaders.5. Slang Drunk.6. Lacking reason or purpose: blind fate; blind choice.7. a. Difficult to comprehend or see; illegible.b. Incompletely or illegibly addressed: blind mail.c. Hidden from sight: a blind seam.d. Screened from the view of oncoming motorists: a blind driveway.e. Secret or otherwise undisclosed: a blind item in a military budget.8. Closed at one end: a blind socket; a blind passage.9. Having no opening: a blind wall.10. Botany Failing to produce flowers or fruits: a blind bud.n.1. (used with a pl. verb) Blind people considered as a group. Used with the: a radio station for reading to the blind.2. often blinds Something, such as a window shade or a Venetian blind, that hinders vision or shuts out light.3. A shelter for concealing hunters, photographers, or observers of wildlife.4. Something intended to conceal the true nature, especially of an activity; a subterfuge.5. A forced bet in poker that is placed before the cards are dealt.adv.1. a. Without seeing; blindly.b. Without the aid of visual reference: flew blind through the fog.2. Without forethought or provision; unawares: entered into the scheme blind.3. Without significant information, especially that might affect an outcome or result: "When you read blind, you see everything but the author" (Margaret Atwood).4. Informal Into a stupor: drank themselves blind.5. Used as an intensive: Thieves in the bazaar robbed us blind.tr.v. blind·ed, blind·ing, blinds 1. To deprive of sight: was blinded in an industrial accident.2. To dazzle: skiers temporarily blinded by sunlight on snow.3. To deprive of perception or insight: prejudice that blinded them to the proposal's merits.4. To withhold light from: Thick shrubs blinded our downstairs windows.
[Middle English, from Old English; see bhel- in Indo-European roots.]
blind′ing·ly adv.blind′ly adv.blind′ness n.BlindnessSee also eyes.
ablepsia, ablepsya lack or loss of sight. — ableptical, adj.amaurosisa condition of partial or total blindness, caused by a disease of the optie nerve. — amaurotic, adj.amblyopia, amblyopyobscurity of vision, occurring without any organic change in the eyes; the first stage of amaurosis. — amblyopic, adj.anopsy, anopsia, anoöpsiablindness.cecityblindness.chionablepsiaMedicine. the condition of snow blindness.eluscationObsolete, the state of having defective eyesight; purblindness.excecationObsolete, the process of blinding.glaucomaa disease of the eyes, in which the eyeball hardens and becomes tense, often resulting in blindness. — glaucomatous, adj.hemeralopiathe loss of sight in daylight. — hemeralopic, adj.noctographa writing frame designed for use by blind people.nyctalopiathe loss of sight in darkness. — nyctalopic, adj.optophonea device combining a selenium cell and telephone apparatus that converts light energy into sound energy, used to enable blind people to sense light through the hearing and thus read printed matter.scotographan instrument for writing when unable to see.scotoma, scotomya blind spot or blind area in the field of vision.typhlologythe totality of medical knowledge concerning the causes, treatment, and prevention of blindness.typhlophilea person who devotes himself to helping the blind.typhlosisblindness. — typhlotic, adj.Blindness See Also: EYE(S); EYE EXPRESSIONS, BLANK - Blind as a bat —Anon
Attribution for this enduringly popular cliche dates back to the seventeenth century and a somewhat longer old English version from John Clarke’s Paromiologia: “Blind as a bat at noone.” Less used variants are “Blind as a beetle” and “Blind as a buzzard.” - Blind as a flame of fire —Algernon Charles Swinburne
- Blind as a fool’s heart —Robert Browning
- Blind [about understanding love and hate] as a newborn child —Marguerite Duras
- Blind as a newt —Leigh Allison Wilson
- Blind as a night fog —Daniel Berrigan
- Blind as a stone —Anon
This still commonly used expression dates back to the fourteenth century, even before Chaucer used it in Canterbury Tales: “Blind as is a stoon.” - (Eyes staring,) blind as glass —Rose Tremain
- Blind as Hell —William Habbington
- Blind as ignorance —Francis Beaumont and John Fletcher
- Blind as inexperience —Victor Hugo
- Blind as love —Percy Bysshe Shelley
- Blind as maggots —Mark Helprin
- Blind as night —Beryl Markham
- (Bright and) blind as the moon in the blank mid-morning sky —F. D. Reeve
- Blind as the waves of the sea —Eva Gore-Booth
- Oblivious of … as an ant or a flea might be to the sound of the avalanche on which it rides —William Faulkner
Thesaurus| Noun | 1. |  blindness - the state of being blind or lacking sightcecity, sightlessnesslegal blindness - vision that is 20/200 or worse in both eyes (20/200 vision is the ability to see at 20 feet what a normal eye can see at 200 feet)vision defect, visual defect, visual disorder, visual impairment - impairment of the sense of sightanopia - sightlessness (especially because of a structural defect in or the absence of an eye)snowblindness, snow-blindness - temporary blindness caused by exposure to sunlight reflected from snow or iceeyelessness - blindness due to loss of the eyesfigural blindness - inability to see shapes and contours |
blindnessnounThe condition of not being able to see:sightlessness.Translationsblind (blaind) adjective1. not able to see. a blind man. 瞎的 瞎的2. (with to) unable to notice. She is blind to his faults. 視而不見的 视而不见的3. hiding what is beyond. a blind corner. 隱蔽的 隐蔽的4. of or for blind people. a blind school. 盲人的 盲人的 noun1. (often in plural) a screen to prevent light coming through a window etc. The sunlight is too bright – pull down the blinds! 百葉窗 窗帘，百叶窗 2. something intended to mislead or deceive. He did that as a blind. 掩護，蒙蔽 蒙蔽 verb to make blind. He was blinded in the war. 使失明 使失明ˈblinding adjective1. tending to make blind. a blinding light. 眩目的 眩目的，刺眼的 2. sudden. He realized, in a blinding flash, that she was the murderer. 突然的 突然的ˈblindly adverb 眩目地 眩目地ˈblindness noun 失明 失明blind alley a situation without any way out. This is a blind alley of a job. 死胡同，死巷，行不通 死胡同，绝路 ˈblindfold noun a piece of cloth etc put over the eyes to prevent someone from seeing. The kidnappers put a blindfold over the child's eyes. 眼罩 眼罩 verb to put a blindfold on (some person or animal). 遮眼 遮眼 adjective, adverb with the eyes covered by a cloth etc. She came blindfold into the room. 遮著眼的(地) 遮着眼的（地） blind spot1. any matter about which one always shows lack of understanding. She seems to have a blind spot about physics. 一竅不通 一窍不通2. an area which is impossible or difficult to see due to an obstruction. 死角，盲點 盲点the blind leading the blind one inexperienced or incompetent person telling another about something. My teaching you about politics will be a case of the blind leading the blind. 外行指導外行 外行指导外行IdiomsSeeblindblindness
blindness, partial or complete loss of sight. Blindness may be caused by injury, by lesions of the brain or optic nerve, by disease of the cornea or retina, by pathological changes originating in systemic disorders (e.g., diabetesdiabetes
or diabetes mellitus
, chronic disorder of glucose (sugar) metabolism caused by inadequate production or use of insulin, a hormone produced in specialized cells (beta cells in the islets of Langerhans) in the pancreas that allows the body to use and store
..... Click the link for more information. ) and by cataractcataract,
in medicine, opacity of the lens of the eye, which impairs vision. In the young, cataracts are generally congenital or hereditary; later they are usually the result of degenerative changes brought on by aging or systemic disease (diabetes).
..... Click the link for more information. , glaucomaglaucoma
, ocular disorder characterized by pressure within the eyeball caused by an excessive amount of aqueous humor (the fluid substance filling the eyeball). This causes pressure against the optic nerve and compression of the blood vessels of the eye—the resulting
..... Click the link for more information. , or retinal detachment. Blindness caused by infectious diseases, such as trachomatrachoma
, infection of the mucous membrane of the eyelids caused by the bacterium Chlamydia trachomatis. Trachoma affects at least 86 million people worldwide. An estimated 1.
..... Click the link for more information. , and by dietary deficiencies is common in underdeveloped countries where medical care is inadequate. River blindness, caused by a parasitic worm transmitted by black flies, results in severe itching and disfiguring lesions. Infection of the eye area can destroy vision. An estimated 18 million people in Africa, Latin America, South America, and Yemen are infected with the parasite; 1 million of those infected are expected to become blind or severely impaired. Until recently, pesticides have been used to eradicate the flies. Two new drugs, ivermectin and amocarzine, have proved effective when used together. Most infectious diseases of the eye can be prevented or cured. A major cause of congenital blindness in the United States, ophthalmia neonatorum, which is caused by gonorrhea organisms in the maternal birth canal, is now prevented by placing silver nitrate solution in all newborn infants' eyes. Retinitis pigmentosis, a hereditary and degenerative eye disease, affects 100,000 people in the United States. An early sign is night blindness which progresses to total blindness. Color blindnesscolor blindness,
visual defect resulting in the inability to distinguish colors. About 8% of men and 0.5% of women experience some difficulty in color perception. Color blindness is usually an inherited sex-linked characteristic, transmitted through, but recessive in, females.
..... Click the link for more information. , an hereditary problem, is an inability to distinguish colors, most commonly red and green. Snow blindness is a temporary condition resulting from a burn of the cornea caused by the reflection of sunlight on snow. Night blindness results from a deficiency of vitamin A. See eyeeye,
organ of vision and light perception. In humans the eye is of the camera type, with an iris diaphragm and variable focusing, or accommodation. Other types of eye are the simple eye, found in many invertebrates, and the compound eye, found in insects and many other
..... Click the link for more information. . Blindness in the strictly scientific sense, the permanent and irreversible loss of vision in both eyes, the inability to distinguish light from darkness. In cases of total blindness visual acuity is equal to 0. In the practical and social sense, blindness has a much broader definition. A person is considered to be blind when he cannot see well enough to orient himself in his surroundings or get around outside his home without help. A blind person may be photoreceptive, that is, able to distinguish light and the direction it is coming from, and may be able to see the outlines of large objects. The legally blind include persons who are practically sightless, possessing extremely low visual acuity (to 0.02). An individual who does not see well enough to work even when wearing glasses is said to be industrially blind. A person whose vision has deteriorated to the point that he cannot do his customary work is considered occupationally blind. For example, individuals engaged in intellectual work are said to be occupationally blind when they can no longer see well enough to read. According to the World Health Organization (WHO), there were 10 to 15 million blind persons in the world in 1972. The main causes of blindness are glaucoma, trachoma, and traumatism of the eyes. The causes of blindness and the number of blind persons vary from country to country. For example, pox diseases caused many cases of blindness in prerevolutionary Russia, whereas no such incidences have been reported in the USSR. In economically developed countries blindness is primarily caused by progressive myopia, traumatism, or vascular lesions of the retina, including those produced by diabetes mellitus. In developing countries infectious and parasitic diseases are the main causes of blindness. Of the approximately 500 million persons with trachoma, approximately 2 million are blind. The disease is widespread in Asia, Africa, and Latin America. Prior to the October Revolution of 1917,21.5 percent of all incidences of blindness were caused by trachoma. By 1968 trachoma had been eradicated as a major disease in the USSR. In industrial countries, where occupational injuries are fairly common, most of the blind are men. Blindness can be controlled by preventing certain eye injuries and diseases. In the USSR, for example, glaucoma is diagnosed early, and those suffering from the disease have regular checkups. Recent advances in eye surgery have restored some degree of vision to many blind persons. The All-Russian Society for the Blind was organized in 1925; similar societies have been organized in other Union republics. A network of specialized secondary and eight-year schools has been established for the education of children who are blind or have poor eyesight. Textbooks, literary works, and magazines are published in Braille. Special sound-recording studios and record and tape libraries have been established. Blind adolescents and adults receive occupational training at special industrial enterprises organized by societies for the blind. After finishing their studies they may work at these enterprises or at enterprises in other localities. In capitalist countries philanthropic societies are the chief organizations involved in finding work for the blind. The World Council for the Welfare of the Blind, which works in cooperation with UNESCO and other agencies of the UN, was established in Paris in 1951. REFERENCESGolovin, S. S. O slepote v Rossii. Odessa, 1910.
Averbakh, M. I. “Uchenie o slepote, ocherk 1.” In his book Oftal’mologicheskie ocherki. Moscow, 1949.
Mnogotomnoe rukovodstvo po glaznym bolezniam, vol. 1, book 2. Edited by V. N. Arkhangel’skii. Moscow, 1962.
Shoev, F. I. Vserossiiskoe obshchestvo slepykh i ego deiatel’nost’. Moscow, 1965.What does it mean when you dream about blindness?Dreams about being blind or dreams in which someone else is blind only rarely indicate the state of physical blindness. As a dream symbol, blindness represents lack of awareness, either being truly unaware of something important that is occurring in one’s life or “turning a blind eye” to something about which one does not wish to know. Also, because our culture associates blindfolds with firing squads, blindfolds may indicate the sense of carrying out an execution, or of being executed. blindness[′blīnd·nəs] (medicine) Loss or absence of the ability to perceive visual images. The condition of a person having less than 1/10 (20/200 on the Snellen test) normal vision. BlindnessAgibdervish who lost an eye. [Arab. Lit.: Arabian Nights]Anchisesblinded by lightning. [Gk. Myth.: Walsh Classical, 22]Blind Pew David,the blind beggar. [Br. Lit.: Treasure Island]Braille, Louis (1809–1852)teacher of blind; devised raised printing which is read by touch. [Fr. Hist.: NCE, 354]CratusTitan who blinded Prometheus. [Gk. Myth.: Kravitz, 67–68]Demodocusblind bard rewarded by Odysseus. [Gk. Lit.: Odyssey VIII]Ephialtesgiant deprived of his left eye by Apollo and of his right eye by Hercules. [Gk. Myth.: Brewer Dictionary, 333]Gloucestercruelly blinded by those he served. [Br. Lit.: King Lear]the Graeaeshare one eye among them. [Gk. Myth.: Gayley, 208–210]Heldar, Dickartist who gradually goes blind and is abandoned by his sweetheart. [Br. Lit.: The Light that Failed in Benét, 586]Homersightless writer of Iliad and Odyssey. [Gr. Hist.: Wallechinsky, 13]Justicepersonified as a blindfolded goddess, token of impartiality. [Rom. Tradition: Jobes II, 898]Keller, Helen(1880–1968) Achieved greatness despite blindness and deafness. [Am. Hist.: Wallechinsky, 13]Lucy, St.vision restored after gouging out of eyes. [Christian Hagiog.: Brewster, 20–21]molesaid to lack eyes. [Medieval Animal Symbolism: White, 95–96]Nydiabeautiful flower girl lacks vision but “sees” love. [Br. Lit.: The Last Days of Pompeii, Magill I, 490–492]Odilia, St.recovered vision; shrine, pilgrimage for visually afflicted. [Christian Hagiog.: Attwater, 257]Oedipusblinded self on learning he had married his mother. [Gk. Lit.: Oedipus Rex]Paul, St.blinded by God on road to Damascus. [N.T.: Acts 9:1–19]Peeping Tomstricken blind for peeping as the naked Lady Godiva rode by. [Br. Legend: Brewer Dictionary]Plutusblind god of Wealth. [Gk. Lit.: Plutus]PolyphemusCyclops blinded by Odysseus. [Gk. Myth.: Odyssey]Rochester, Edwardblinded when his home burns down, depends on the care of Jane Eyre. [Br. Lit.: Charlotte Bronte Jane Eyre]SamsonIsraelite hero treacherously blinded by Philistines. [O.T.: Judges 16:4–21]Staggsightless roomkeeper. [Br. Lit.: Barnaby Rudge]three blind micesightless rodents; lost tails to farmer’s wife. [Nurs. Rhyme: Opie, 306]Tiresiasmade sightless by Athena for viewing her nakedness. [Gk. Myth.: Brewer Dictionary, 1086]Tobitsparrow guano falls into his eyes while sleeping. [Apocrypha: Tobit 2:10]Zedekiaheyes put out for revolting against Nebuchadnezzar. [O.T.: II Kings 25:7]Blindness (dreams)Those who are literally blind cannot see the world around them. They can only perceive images with their mind’s eye. When the dream is about being blind, the message is of a psychological and spiritual nature. Blindness in a dream suggests that the dreamer may be unwilling to see some aspect of his life. There may be a blind spot in the mind, heart, or soul; the unconscious material being processed by the dream threatens the dreamer and he cannot bring it to his conscious attention. The good news is that dreams are cyclical in nature. A message that cannot get through at the current time will repeat itself at a future date. The very central point of dreams is to make us aware of all aspects of ourselves and our lives; enlightenment and integration of unconscious and conscious components take time and desire. What you cannot see in a dream currently will become visible when you are more able to effectively cope with the message. This definition also applies to darkness and sleep as dream symbols.
See blindnessblindness
blindness [blīnd´nes] lack or loss of ability to see (see vision). Legally, blindness is defined as less than 20/200 vision in the better eye with glasses (vision of 20/200 is the ability to see at 20 feet only what the normal eye can see at 200 feet). A person with 20° or less vision (pinhole vision) is also legally blind. In 2002, the number of people classified as legally blind in the United States was estimated at 10 million; millions more had severe visual impairments. The five leading causes of impaired vision and blindness in the United States are age-related macular degeneration, cataract, glaucoma, retinopathy" >diabetic retinopathy, and atrophy of the optic nerve" >optic nerve. Besides health care problems, issues related to employment, independent living, and literacy should all be considered when caring for patients who are blind. The American Foundation for the Blind is a resource center for information related to visual problems. They can be contacted by calling 1-800-232-5463 or consulting their web site at http://www.afb.org.blue blindness (blue-yellow blindness) popular names for imperfect perception of blue and yellow tints; see tritanopia and tetartanopia.color blindness color vision deficiency.complete color blindness vision" >monochromatic vision.day blindness hemeralopia.green blindness imperfect perception of green tints; see deuteranopia and protanopia.legal blindness that defined by law, usually, maximal visual acuity in the better eye after correction of 20/200 with a total diameter of the visual field in that eye of 20°.night blindness see night blindness.object blindness (psychic blindness) visual agnosia.red blindness popular name for protanopia.red-green blindness (red-green color blindness) popular names for any imperfect perception of red and green tints, including all the most common types of color vision deficiency. See deuteranomaly, deuteranopia, protanomaly, and protanopia.snow blindness dimness of vision, usually temporary, due to the glare of the sun upon snow.total color blindness vision" >monochromatic vision.yellow blindness popular name for tritanopia.blind·ness (blīnd'nes), 1. Loss of the sense of sight; absolute blindness connotes no light perception.
See also: amblyopia, amaurosis. 2. Loss of visual appreciation of objects although visual acuity is normal. 3. Absence of the appreciation of sensation, for example, taste blindness. Synonym(s): typhlosisblindness (1) Lack of visual perception due to structural or functional defects, which can occur anyplace from the eyelids to the visual cortex.
(2) An inability to perceive the parameters of a scene in the nominal visual field of a subject in the presence of adequate illumination.blindness An inability to see effectively. See Blue color blindness, Legal blindness, Night blindness, Occupational blindness, Snowblindness, Transient monocular blindness. blind·ness (blīnd'nĕs) 1. Loss of the sense of sight; absolute blindness connotes no light perception.
See also: amblyopia, amaurosis2. Loss of visual appreciation of objects although visual acuity is normal. 3. Absence of the appreciation of sensation, e.g., taste blindness.
Synonym(s): typhlosis. blindness (blind'nes) Inability to see. The leading causes of blindness in the U.S. are age-related macular degeneration, diabetic retinopathy, and glaucoma. Blindness may be caused by diseases of the lens, retina, or other eye structures; diseases of the optic nerve; or lesions of the visual cortex or pathways of the brain. A small number of infants are born blind, but far more people become blind during life. In the U.S., blindness due to infection is rare, but worldwide diseases like trachoma and onchocerciasis are relatively common causes of severe visual impairment. In malnourished people, vitamin A deficiency is an important cause of blindness. A variety of free services are available for the blind and physically handicapped. Talking Books Topics, published bimonthly in large-print, cassette, and disc formats, is distributed free to the blind and physically handicapped who participate in the Library of Congress free reading program. It lists recorded books and magazines available through a national network of cooperating libraries and provides news of developments and activities in library services. Subscription requests may be sent to Talking Books Topics, CMLS, P.O. Box 9150, Melbourne, FL 32902-9150. amnesic color blindnessInability to remember the names of colors.  TEST FOR COLOR BLINDNESScolor blindnessA genetic or acquired abnormality of color perception. Complete color blindness, a rare disease, is called achromatopsia. Red-green color blindness, which affects about 8% of the male population, is an X-linked trait. Although color blindness is the term most commonly used, it is inaccurate:color deficiency and color vision deficiency are preferred. See: illustrationcortical blindnessBlindness due to lesions in the left and right occipital lobes of the brain. The eyes are still able to move, and the pupillary light reflexes remain, but the blindness is as if the optic nerves had been severed. The usual cause is occlusion of the posterior cerebral arteries. Transitory cortical blindness may follow head injury. Synonym: cerebral visual impairmentday blindnessHemeralopia.eclipse blindnessBlindness due to burning the macula while viewing an eclipse without using protective lenses. Looking directly at the sun at any time can damage the eyes. Synonym: solar blindness; solar maculopathygreen blindnessAglaucopsia.hysterical blindnessAn inaccurate term for functional blindness, i.e., blindness caused by psychological disorders rather than by demonstrable organic pathology.legal blindnessA degree of loss of visual acuity that prevents a person from performing work requiring eyesight. In the U.S. this is defined as corrected visual acuity of 20/200 or less, or a visual field of 20° or less in the better eye. In the U.S. there are about three quarters of a million blind people, and about 8 or 9 million people with significant visual impairment. letter blindnessA form of aphasia marked by an inability to understand the meaning of letters. night blindnessNyctalopia (1).note blindnessThe inability to recognize musical notes. It is due to a lesion of the central nervous system. object blindnessA disorder in which the brain fails to recognize things even though the eyes function normally. See: apraxiapsychic blindnessSight without recognition due to a brain lesion. red-green blindnessRed-green color blindnessred-green color blindnessInability to see red hues. It is the most common kind of color blindness. Synonym: red-green blindnessriver blindness See: onchocerciasissnow blindnessBlindness, usually temporary, due to the glare of sunlight on snow. It may result in photophobia and conjunctivitis, the latter resulting from effects of ultraviolet radiation. solar blindnessEclipse blindness.taste blindnessAn inability to taste certain substances such as phenylthiocarbamide. This inability is due to an autosomal recessive trait. transient monocular blindnessA temporary loss of vision affecting one eye. In older adults it is usually a form of transient ischemic attack, caused by carotid atherosclerosis, and is therefore a harbinger of stroke. In young adults it may be caused by migraine. Synonym: amaurosis fugaxEtiologyIn older adults, causes of carotid atherosclerosis include smoking, diabetes mellitus, hypertension, obesity, and hypercholesterolemia. When atherosclerotic plaques form within the carotid artery, they may ulcerate. The exposed endothelium within the artery becomes a focus of inflammation and blood clotting. Blindness occurs when tiny clots from the carotid arteries embolize to the ophthalmic arteries. SymptomsPatients often describe a dark shade descending into the field of vision. At the same time they may have other stroke symptoms, e.g., difficulty with speech or weakness of the hand on the side opposite the affected eye. TreatmentA patient who may have carotid atherosclerosis should begin taking aspirin or other antiplatelet drugs if these are tolerated. Blood pressure and lipid levels should be controlled. The patient should be referred for noninvasive evaluation of blood flow through the carotid arteries, e.g., ultrasonography. If the carotid arteries are significantly blocked, the patient and physician should consider the risks and benefits of carotid endarterectomy. violet blindnessInability to see violet tints.word blindnessAlexia.blindness1. Inability to see. 2. Absence or severe loss of vision so as to be unable to perform any work for which eyesight is essential. The World Health Organization (WHO) defines blindness as the best corrected visual acuity of 3/60 (20/400) or less, in the better eye. Syn. ablepsia; ablepsy; amaurosis.
blue blindness See tritanopia.
colour blindness Sometimes this term is incorrectly used to cover all forms of colour vision deficiency, however mild or severe. See achromatopsia; defective colour vision; deuteranopia; monochromat; protanopia; tritanopia.
congenital stationary night blindness Night blindness (nyctalopia) inherited as either autosomal dominant with non-progressive nyctalopia but normal daylight visual acuity and visual fields and presumed to be due to a defect in neural transmission between the rods and the bipolars in the retina, or autosomal recessive or X-linked with congenital nyctalopia, myopia, nystagmus and reduced visual acuity. See Oguchi's disease; fundus albipunctatus; hemeralopia; retinitis pigmentosa.
cortical blindness Loss of vision due to lesions in the areas of both occipital lobes of the brain associated with visual functions. It may result from trauma or from a vascular disease (e.g. a circulatory occlusion caused by a stroke). A lesion in one occipital lobe may result in homonymous hemianopia, often with macular sparing.
day blindness See hemeralopia.
eclipse blindness Partial or complete loss of central vision due to a foveal lesion caused by fixating the sun without adequate eye protection. This condition is caused mainly by the infrared radiations from the sun. See actinic.
flash blindness See actinic keratoconjunctivitis.
green blindness See deuteranopia.
hysterical blindness Blindness associated with an emotional shock, which occurs without a physical or organic cause. The patient has normal blink and pupillary responses and the fundus appears normal. A placebo therapy and/or psychological counselling may be required.
legal blindness The definition varies from country to country. In the UK it is equal to either 3/60 (20/400) or worse; or 6/60 (20/200) or worse, with markedly restricted fields.
motion blindness A very rare condition in which a patient is unable to process information about motion, although other visual functions are unimpaired. This is believed to be the result of damage to the middle temporal cortex (V5). See visual association areas.
night blindness See hemeralopia.
perceptual blindness See agnosia.
red blindness See protanopia.
river blindness See onchocerciasis.
snow blindness See actinic keratoconjunctivitis.
word blindness See alexia.Patient discussion about blindnessQ. Why is the color draining from my eyes?! When I was little I had rich shiny cobalt blue eyes! As I grew up they faded or just started to dim in color. Being partially blind you can see in my left eye the its a really light color and creamy instead of my deep blue color... Why does my eye color dim?! I didnt think going blind had anything to do with the color of my eyes changing... Or is it something else?! Please, and thank you!A. depends on your blindness, if it is caused by your cornea changing (corneal opacity)- it'll change your eye color to a cloudy white. it can also be caused by cataract.
are those the reason of your blindness? More discussions about blindnessLegalSeeBlindblindness
Synonyms for blindnessnoun the condition of not being able to seeSynonymsSynonyms for blindnessnoun the state of being blind or lacking sightSynonymsRelated Words- legal blindness
- vision defect
- visual defect
- visual disorder
- visual impairment
- anopia
- snowblindness
- snow-blindness
- eyelessness
- figural blindness
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