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Items: 1 to 20 of 25

1.

Dystrophy

a degenerative disorder [from CHV]

MedGen UID:
569248
Concept ID:
C0333606
Pathologic Function
2.

Retinal dystrophy

MedGen UID:
504495
Concept ID:
CN000522
Finding
3.

Retinal dystrophy

A group of disorders involving predominantly the posterior portion of the ocular fundus, due to degeneration in the sensory layer of the RETINA; RETINAL PIGMENT EPITHELIUM; BRUCH MEMBRANE; CHOROID; or a combination of these tissues. [from MeSH]

MedGen UID:
208903
Concept ID:
C0854723
Disease or Syndrome; Finding
4.

Retinaldehyde

A carotenoid constituent of visual pigments. It is the oxidized form of retinol which functions as the active component of the visual cycle. It is bound to the protein opsin forming the complex rhodopsin. When stimulated by visible light, the retinal component of the rhodopsin complex undergoes isomerization at the 11-position of the double bond to the cis-form; this is reversed in "dark" reactions to return to the native trans-configuration. [from MeSH]

MedGen UID:
19764
Concept ID:
C0035331
Organic Chemical; Pharmacologic Substance; Vitamin
5.

Visual impairment

Visual impairment (or vision impairment) is vision loss (of a person) to such a degree as to qualify as an additional support need through a significant limitation of visual capability resulting from either disease, trauma, or congenital or degenerative conditions that cannot be corrected by conventional means, such as refractive correction, medication, or surgery. [from HPO]

MedGen UID:
777085
Concept ID:
C3665347
Finding
6.

Dentatorubral pallidoluysian atrophy

Dentatorubral-pallidoluysian atrophy (DRPLA) is a progressive disorder of ataxia, myoclonus, epilepsy, and progressive intellectual deterioration in children and ataxia, choreoathetosis, and dementia or character changes in adults. Onset ranges from before age one year to age 72 years; mean age of onset is 31.5 years. The clinical presentation varies depending on the age of onset. The cardinal features in adults are ataxia, choreoathetosis, and dementia. Cardinal features in children are progressive intellectual deterioration, behavioral changes, myoclonus, and epilepsy. [from GeneReviews]

MedGen UID:
155630
Concept ID:
C0751781
Disease or Syndrome
7.

Atrophy

Decrease in the size of a cell, tissue, organ, or multiple organs, associated with a variety of pathological conditions such as abnormal cellular changes, ischemia, malnutrition, or hormonal changes. [from MeSH]

MedGen UID:
83084
Concept ID:
C0333641
Pathologic Function
8.

Impairment

MedGen UID:
151925
Concept ID:
C0684336
Pathologic Function
9.

Proliferation

MedGen UID:
137720
Concept ID:
C0334094
Pathologic Function
10.

Severe

Having a high degree of severity. For quantitative traits, a deviation of between four and five standard deviations from the appropriate population mean. [from HPO]

MedGen UID:
104640
Concept ID:
C0205082
Qualitative Concept
11.

Onset

The age group in which disease manifestations appear. [from HPO]

MedGen UID:
64519
Concept ID:
C0206132
Quantitative Concept
12.

Visual impairment

Vision considered to be inferior to normal vision as represented by accepted standards of acuity, field of vision, or motility. Low vision generally refers to visual disorders that are caused by diseases that cannot be corrected by refraction (e.g., MACULAR DEGENERATION; RETINITIS PIGMENTOSA; DIABETIC RETINOPATHY, etc.). [from MeSH]

MedGen UID:
22663
Concept ID:
C0042798
Disease or Syndrome; Finding
13.

Mitogens

A soluble substance, usually a protein, that induces mitosis in resting cells, thereby causing cell proliferation. [from NCI]

MedGen UID:
7665
Concept ID:
C0026249
Pharmacologic Substance
14.

Abnormal degeneration

Disturbance of cell integrity and deterioration of normal tissue, cells or organs. [from NCI_CDISC]

MedGen UID:
3705
Concept ID:
C0011164
Pathologic Function
15.

Inborn genetic diseases

Diseases that are caused by genetic mutations present during embryo or fetal development, although they may be observed later in life. The mutations may be inherited from a parent's genome or they may be acquired in utero. [from MeSH]

MedGen UID:
181981
Concept ID:
C0950123
Disease or Syndrome
16.

Retinal degeneration

A retrogressive pathological change in the retina, focal or generalized, caused by genetic defects, inflammation, trauma, vascular disease, or aging. Degeneration affecting predominantly the macula lutea of the retina is MACULAR DEGENERATION. (Newell, Ophthalmology: Principles and Concepts, 7th ed, p304) [from MeSH]

MedGen UID:
48432
Concept ID:
C0035304
Finding; Pathologic Function
17.

Hereditary eye diseases

Transmission of gene defects or chromosomal aberrations/abnormalities which are expressed in extreme variation in the structure or function of the eye. These may be evident at birth, but may be manifested later with progression of the disorder. [from MeSH]

MedGen UID:
41933
Concept ID:
C0015398
Disease or Syndrome
18.

Retinitis pigmentosa

Retinitis pigmentosa (RP) refers to a heterogeneous group of inherited ocular diseases that result in a progressive retinal degeneration affecting 1 in 3,000 to 5,000 people (Veltel et al., 2008). Symptoms include night blindness, the development of tunnel vision, and slowly progressive decreased central vision starting at approximately 20 years of age. Upon examination, patients have decreased visual acuity, constricted visual fields, dyschromatopsia (tritanopic; see 190900), and the classic fundus appearance with dark pigmentary clumps in the midperiphery and perivenous areas ('bone spicules'), attenuated retinal vessels, cystoid macular edema, fine pigmented vitreous cells, and waxy optic disc pallor. RP is associated with posterior subcapsular cataracts in 39 to 72% of patients, high myopia, astigmatism, keratoconus, and mild hearing loss in 30% of patients (excluding patients with Usher syndrome; see 276900). Fifty percent of female carriers of X-linked RP have a golden reflex in the posterior pole (summary by Kaiser et al., 2004). Juvenile Retinitis Pigmentosa Autosomal recessive childhood-onset severe retinal dystrophy is a heterogeneous group of disorders affecting rod and cone photoreceptors simultaneously. The most severe cases are termed Leber congenital amaurosis (see 204000), whereas the less aggressive forms are usually considered juvenile retinitis pigmentosa (Gu et al., 1997). Autosomal recessive forms of juvenile retinitis pigmentosa can be caused by mutation in the SPATA7 (609868), LRAT (604863), and TULP1 (602280) genes (see LCA3, 604232, LCA14, 613341, and LCA15, 613843, respectively). An autosomal dominant form of juvenile retinitis pigmentosa (see 604393) is caused by mutation in the AIPL1 gene (604392). [from OMIM]

MedGen UID:
20551
Concept ID:
C0035334
Disease or Syndrome
19.

Congenital, Hereditary, and Neonatal Diseases and Abnormalities

Diseases existing at birth and often before birth, or that develop during the first month of life (INFANT, NEWBORN, DISEASES), regardless of causation. Of these diseases, those characterized by structural deformities are termed CONGENITAL ABNORMALITIES. [from MeSH]

MedGen UID:
14319
Concept ID:
C0027612
Congenital Abnormality; Disease or Syndrome
20.

Retinopathy

The retina is a layer of tissue in the back of your eye that senses light and sends images to your brain. In the center of this nerve tissue is the macula. It provides the sharp, central vision needed for reading, driving and seeing fine detail. Retinal disorders affect this vital tissue. They can affect your vision, and some can be serious enough to cause blindness. Examples are. -Macular degeneration - a disease that destroys your sharp, central vision. -Diabetic eye disease. -Retinal detachment - a medical emergency, when the retina is pulled away from the back of the eye. -Retinoblastoma - cancer of the retina. It is most common in young children. -Macular pucker - scar tissue on the macula. -Macular hole - a small break in the macula that usually happens to people over 60. -Floaters - cobwebs or specks in your field of vision. NIH: National Eye Institute.  [from MedlinePlus]

MedGen UID:
11209
Concept ID:
C0035309
Disease or Syndrome
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