Bietti crystalline dystrophy
Health dictionary
Untitled Document
Search :      

Art dictionary
Financial dictionary
Hollywood dictionary
Insurance dictionary
Literature dictionary
Real Estate dictionary
Tourism dictionary

 
  Bietti crystalline dystrophy



Bietti crystalline dystrophy

   A genetic eye disease that leads to progressive night blindness and visual field constriction and is characterized by the formation of crystals in the cornea (the clear covering of the eye), yellow shiny deposits on the retina, and progressive atrophy of the retina and choroid (the back layers of the eye). Average age of onset is 29. Lipid inclusions are present not only in the cornea but also in blood lymphocytes, suggesting a systemic disorder of lipid metabolism. There is no known treatment. The disease is an autosomal recessive trait (the gene is on chromosome 4q35-qter) and is named for G. B. Bietti, an Italian ophthalmologist, who described it in 1937. Also called Bietti crystalline corneoretinal dystrophy.

RELATED TERMS
--------------------------------------

Genetic
Hereditary. Having to do with the genes.

Disease
Illness or sickness often characterized by typical patient problems (symptoms) and physical findings (signs). Disruption sequence: The events that occur when a fetus that is developing normally is subjected to a destructive agent such as the rubella (German measles) virus.

Blindness
Legal blindness is defined as: 1) visual acuity of 20/200 (only being able to see the big E on the eye chart) or less in the best eye even with the eyes corrected by glasses or contact lenses; or, 2) The peripheral visual field is reduced to 20 degrees of visual angle or less. Twenty degrees of visual angle is about the size of a one foot ruler held at arms length.

Cornea
The front part of the eye that acts as a window for the entrance of light rays. It is attached to the other outer coat of the eye, the sclera; the white part of the eye. The cornea provides a significant amount of focusing power for the eye (the rest is provided by the lens). Because it has many nerve fibers, an injury or foreign body causes significant pain and discomfort.

Retina
A membrane lining the inside of the back of the eye that contains light-sensitive nerve cells that convert focused light into nerve impulses, making vision possible.

Atrophy
A defect or failure of cell nutrition manifested as decrease in size or healthiness of an organ or tissue.

Choroid
This is the vascular coat between the sclera and the retina, which furnishes blood and nutrition to the outer layer of the retina.

Lipid
A fatty substance in the blood.

Blood
The life-maintaining fluid which is made up of plasma, red blood cells (erythrocytes), white blood cells (leukocytes), and platelets; blood circulates through the body's heart, arteries, veins, and capillaries; it carries away waste matter and carbon dioxide, and brings nourishment, electrolytes, hormones, vitamins, antibodies, heat, and oxygen to the tissues.

Systemic
Disease or symptoms that affect many different parts of the body.

Metabolism
The chemical activity that occurs in cells, releasing energy from nutrients, or using energy to create other substances, such as proteins.

Autosomal
"Pertaining to a chromosome that is not a sex chromosome; relating to any one of the chromosomes save the sex chromosomes. People normally have 22 pairs of autosomes (44 autosomes) in each cell together with two sex chromosomes (X and Y in the male and XX in the female). "

Gene
1. A unit of DNA that carries information for the biosynthesis of a specific product in the cell. 2. Ultimate unit by which inheritable characteristics are transmitted to succeeding generations in all living organisms. Genes are contained by, and arranged along the length of, the chromosome. The gene is composed of deoxyribonucleic acid (DNA). Each chromosome of each species has a definite number and arrangement of genes, which govern both the structure and metabolic functions of the cells and thus of the entire organism.

Chromosome
A structural unit within a eukaryotic nucleus that carries genes. A chromosome consists of a long, continuous strand of DNA and associated proteins.

Ophthalmologist
A physician (MD) who specializes in the diagnosis and treatment of eye problems and diseases. The ophthalmologist works with the use of glasses, contact lenses, eye medication and surgery.

Dystrophy
Partial atrophy of tissue or an organ as a result of imperfect cell nutrition.



SIMILAR TERMS
--------------------------------------



PREVIOUS AND NEXT TERMS
--------------------------------------

Bicarbonate
In medicine, bicarbonate usually refers to bicarbonate of soda (sodium bicarbonate, baking soda) white powder that is common ingredient in antacids. Also, the bicarbonate level is an indirect measure of the acidity of the blood that is determined when electrolytes are tested. The normal serum range for bicarbonate is 22-30 mmol/L.

Bicornuate
Having two horns or horn-shaped branches. The uterus (normally unicornuate) can sometimes be bicornuate (with two branches, eg, one at about 10:30 and the other at about 1:30).

Bicuspid aortic valve
Whereas the normal aortic valve in the heart has three flaps (cusps) that open and close, a bicuspid valve has only two. There may be no symptoms in childhood, but in time the valve may become stenotic (narrowed), making it harder for blood to pass through it, or the valve may start to let blood leak backwards through the valve (regurgitate). Treatment depends on how the valve is working.

Bicycle helmet
A well-known but often neglected device designed to protect the head of a bicyclist.

Bid (on prescription)
"Seen on a prescription, bid means twice (two times) a day. It is an abbreviation for ""bis in die"" which in Latin means twice a day. The abbreviation bid is sometimes written without a period either in lower-case letters as ""bid"" or in capital letters as ""BID"" or with periods as ""b.i.d."" However it is written, it is one of a number of hallowed abbreviations of Latin terms that have been traditionally used in prescriptions to specify the frequency with which medicines should be taken. "

Bietti crystalline dystrophy

Bifid
Cleft (split) in two. See, for example, bifid uvula.

Bifid uvula
The uvula, the little V-shaped fleshy mass hanging from the back of the soft palate, is cleft or split. Cleft uvula is a common minor anomaly occurring in about 1% of whites and 10% of Native Americans. Persons with a cleft uvula should not have their adenoids removed because, without the adenoids, they cannot achieve proper closure between the soft palate and pharynx while speaking and develop hypernasal speech.

Big bone disease
See: Kashin-Beck disease.

Big toe sign
An important neurologic examination based upon what the big toe (and other toes) do when the sole of the foot is stimulated. If the big toe goes up, that may mean trouble.

BIID
Body integrity identity disorder.

   We thank you for using the Health Dictionary to search for Bietti crystalline dystrophy. If you have a better definition for Bietti crystalline dystrophy than the one presented here, please let us know by making use of the suggest a term option. This definition of Bietti crystalline dystrophy may be disputed by other professionals. Our attempt is to provide easy definitions on Bietti crystalline dystrophy and any other medical topic for the public at large.
 
This dictionary contains 59020 terms.      









  
                    © Health Dictionary 2005 - All rights reserved -

   bietticrystallinedystrophy / ietti crystalline dystrophy / betti crystalline dystrophy / bitti crystalline dystrophy / bieti crystalline dystrophy / bieti crystalline dystrophy / biett crystalline dystrophy / bietticrystalline dystrophy / bietti rystalline dystrophy / bietti cystalline dystrophy / bietti crstalline dystrophy / bietti crytalline dystrophy / bietti crysalline dystrophy / bietti crystlline dystrophy / bietti crystaline dystrophy / bietti crystaline dystrophy / bietti crystallne dystrophy / bietti crystallie dystrophy / bietti crystallin dystrophy / bietti crystallinedystrophy / bietti crystalline ystrophy / bietti crystalline dstrophy / bietti crystalline dytrophy / bietti crystalline dysrophy / bietti crystalline dystophy / bietti crystalline dystrphy / bietti crystalline dystrohy / bietti crystalline dystropy / bietti crystalline dystroph / bbietti crystalline dystrophy / biietti crystalline dystrophy / bieetti crystalline dystrophy / biettti crystalline dystrophy / biettti crystalline dystrophy / biettii crystalline dystrophy / bietti crystalline dystrophy / bietti ccrystalline dystrophy / bietti crrystalline dystrophy / bietti cryystalline dystrophy / bietti crysstalline dystrophy / bietti crysttalline dystrophy / bietti crystaalline dystrophy / bietti crystallline dystrophy / bietti crystallline dystrophy / bietti crystalliine dystrophy / bietti crystallinne dystrophy / bietti crystallinee dystrophy / bietti crystalline dystrophy / bietti crystalline ddystrophy / bietti crystalline dyystrophy / bietti crystalline dysstrophy / bietti crystalline dysttrophy / bietti crystalline dystrrophy / bietti crystalline dystroophy / bietti crystalline dystropphy / bietti crystalline dystrophhy / bietti crystalline dystrophyy / vietti crystalline dystrophy / fietti crystalline dystrophy / gietti crystalline dystrophy / hietti crystalline dystrophy / nietti crystalline dystrophy / ietti crystalline dystrophy / betti crystalline dystrophy / bi3tti crystalline dystrophy / bi4tti crystalline dystrophy / birtti crystalline dystrophy / biftti crystalline dystrophy / bidtti crystalline dystrophy / bistti crystalline dystrophy / biwtti crystalline dystrophy / bie5ti crystalline dystrophy / bie6ti crystalline dystrophy / bieyti crystalline dystrophy / biehti crystalline dystrophy / biegti crystalline dystrophy / biefti crystalline dystrophy / bierti crystalline dystrophy / bie4ti crystalline dystrophy / biet5i crystalline dystrophy / biet6i crystalline dystrophy / bietyi crystalline dystrophy / biethi crystalline dystrophy / bietgi crystalline dystrophy / bietfi crystalline dystrophy / bietri crystalline dystrophy / biet4i crystalline dystrophy / biett crystalline dystrophy / bietti xrystalline dystrophy / bietti srystalline dystrophy / bietti drystalline dystrophy / bietti frystalline dystrophy / bietti vrystalline dystrophy / bietti rystalline dystrophy / bietti c4ystalline dystrophy / bietti c5ystalline dystrophy / bietti ctystalline dystrophy / bietti cgystalline dystrophy / bietti cfystalline dystrophy / bietti cdystalline dystrophy / bietti ceystalline dystrophy / bietti c3ystalline dystrophy / bietti cr6stalline dystrophy / bietti cr7stalline dystrophy / bietti crustalline dystrophy / bietti crjstalline dystrophy / bietti crhstalline dystrophy / bietti crgstalline dystrophy / bietti crtstalline dystrophy / bietti cr5stalline dystrophy / bietti crywtalline dystrophy / bietti cryetalline dystrophy / bietti crydtalline dystrophy / bietti cryxtalline dystrophy / bietti cryztalline dystrophy / bietti cryatalline dystrophy / bietti cryqtalline dystrophy / bietti crys5alline dystrophy / bietti crys6alline dystrophy / bietti crysyalline dystrophy / bietti cryshalline dystrophy / bietti crysgalline dystrophy / bietti crysfalline dystrophy / bietti crysralline dystrophy / bietti crys4alline dystrophy / bietti crystqlline dystrophy / bietti crystwlline dystrophy / bietti crystslline dystrophy / bietti crystxlline dystrophy / bietti crystzlline dystrophy / bietti crystaoline dystrophy / bietti crystapline dystrophy / bietti crysta;line dystrophy / bietti crysta.line dystrophy / bietti crysta,line dystrophy / bietti crystakline dystrophy / bietti crystailine dystrophy / bietti crystaloine dystrophy / bietti crystalpine dystrophy / bietti crystal;ine dystrophy / bietti crystal.ine dystrophy / bietti crystal,ine dystrophy / bietti crystalkine dystrophy / bietti crystaliine dystrophy / bietti crystallne dystrophy / bietti crystallibe dystrophy / bietti crystallihe dystrophy / bietti crystallije dystrophy / bietti crystallime dystrophy / bietti crystalli e dystrophy / bietti crystallin3 dystrophy / bietti crystallin4 dystrophy / bietti crystallinr dystrophy / bietti crystallinf dystrophy / bietti crystallind dystrophy / bietti crystallins dystrophy / bietti crystallinw dystrophy / bietti crystalline eystrophy / bietti crystalline rystrophy / bietti crystalline fystrophy / bietti crystalline vystrophy / bietti crystalline cystrophy / bietti crystalline xystrophy / bietti crystalline systrophy / bietti crystalline wystrophy / bietti crystalline d6strophy / bietti crystalline d7strophy / bietti crystalline dustrophy / bietti crystalline djstrophy / bietti crystalline dhstrophy / bietti crystalline dgstrophy / bietti crystalline dtstrophy / bietti crystalline d5strophy / bietti crystalline dywtrophy / bietti crystalline dyetrophy / bietti crystalline dydtrophy / bietti crystalline dyxtrophy / bietti crystalline dyztrophy / bietti crystalline dyatrophy / bietti crystalline dyqtrophy / bietti crystalline dys5rophy / bietti crystalline dys6rophy / bietti crystalline dysyrophy / bietti crystalline dyshrophy / bietti crystalline dysgrophy / bietti crystalline dysfrophy / bietti crystalline dysrrophy / bietti crystalline dys4rophy / bietti crystalline dyst4ophy / bietti crystalline dyst5ophy / bietti crystalline dysttophy / bietti crystalline dystgophy / bietti crystalline dystfophy / bietti crystalline dystdophy / bietti crystalline dysteophy / bietti crystalline dyst3ophy / bietti crystalline dystr9phy / bietti crystalline dystr0phy / bietti crystalline dystrpphy / bietti crystalline dystrlphy / bietti crystalline dystrkphy / bietti crystalline dystriphy / bietti crystalline dystr8phy / bietti crystalline dystro0hy / bietti crystalline dystro-hy / bietti crystalline dystro[hy / bietti crystalline dystro;hy / bietti crystalline dystrolhy / bietti crystalline dystroohy / bietti crystalline dystro9hy / bietti crystalline dystropyy / bietti crystalline dystropuy / bietti crystalline dystropjy / bietti crystalline dystropny / bietti crystalline dystropby / bietti crystalline dystropgy / bietti crystalline dystropty / bietti crystalline dystroph6 / bietti crystalline dystroph7 / bietti crystalline dystrophu / bietti crystalline dystrophj / bietti crystalline dystrophh / bietti crystalline dystrophg / bietti crystalline dystropht / bietti crystalline dystroph5 /