Biomaterial Database

The electroretinogram in retinitis pigmentosa. 1979

M F Marmor

Examination of electroretinographic (ERG) reports from 70 consecutive patients with retinitis pigmentosa (RP) showed that photopic and scotopic B-wave amplitudes correlated with age and visual acuity, but not with dark adaptation threshold. No appreciable differences in ERG characteristics (including B-wave implicit time) were observed between recessive, dominant, and X-linked cases. However, the ERG findings from one group of patients stood out clearly from the rest, because of normal flicker B-wave implicit times (less than or equal to 32 ms) and large B-wave amplitudes (less than or equal to 100 muV under scotopic conditions). These patients constitute a recognizable subgroup of RP, independent of the mode of inheritance, which is characterized by delimited disease, mild functional symptoms, and a good visual prognosis.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D010786	Photoreceptor Cells	Specialized cells that detect and transduce light. They are classified into two types based on their light reception structure, the ciliary photoreceptors and the rhabdomeric photoreceptors with MICROVILLI. Ciliary photoreceptor cells use OPSINS that activate a PHOSPHODIESTERASE phosphodiesterase cascade. Rhabdomeric photoreceptor cells use opsins that activate a PHOSPHOLIPASE C cascade.	Ciliary Photoreceptor Cells,Ciliary Photoreceptors,Rhabdomeric Photoreceptor Cells,Rhabdomeric Photoreceptors,Cell, Ciliary Photoreceptor,Cell, Photoreceptor,Cell, Rhabdomeric Photoreceptor,Cells, Ciliary Photoreceptor,Cells, Photoreceptor,Cells, Rhabdomeric Photoreceptor,Ciliary Photoreceptor,Ciliary Photoreceptor Cell,Photoreceptor Cell,Photoreceptor Cell, Ciliary,Photoreceptor Cell, Rhabdomeric,Photoreceptor Cells, Ciliary,Photoreceptor Cells, Rhabdomeric,Photoreceptor, Ciliary,Photoreceptor, Rhabdomeric,Photoreceptors, Ciliary,Photoreceptors, Rhabdomeric,Rhabdomeric Photoreceptor,Rhabdomeric Photoreceptor Cell
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
D002869	Chromosome Aberrations	Abnormal number or structure of chromosomes. Chromosome aberrations may result in CHROMOSOME DISORDERS.	Autosome Abnormalities,Cytogenetic Aberrations,Abnormalities, Autosome,Abnormalities, Chromosomal,Abnormalities, Chromosome,Chromosomal Aberrations,Chromosome Abnormalities,Cytogenetic Abnormalities,Aberration, Chromosomal,Aberration, Chromosome,Aberration, Cytogenetic,Aberrations, Chromosomal,Aberrations, Chromosome,Aberrations, Cytogenetic,Abnormalities, Cytogenetic,Abnormality, Autosome,Abnormality, Chromosomal,Abnormality, Chromosome,Abnormality, Cytogenetic,Autosome Abnormality,Chromosomal Aberration,Chromosomal Abnormalities,Chromosomal Abnormality,Chromosome Aberration,Chromosome Abnormality,Cytogenetic Aberration,Cytogenetic Abnormality
D003623	Dark Adaptation	Adjustment of the eyes under conditions of low light. The sensitivity of the eye to light is increased during dark adaptation.	Scotopic Adaptation,Adaptation, Dark,Adaptation, Scotopic
D004596	Electroretinography	Recording of electric potentials in the retina after stimulation by light.	Electroretinographies
D005260	Female		Females
D005799	Genes, Dominant	Genes that influence the PHENOTYPE both in the homozygous and the heterozygous state.	Conditions, Dominant Genetic,Dominant Genetic Conditions,Genetic Conditions, Dominant,Condition, Dominant Genetic,Dominant Gene,Dominant Genes,Dominant Genetic Condition,Gene, Dominant,Genetic Condition, Dominant
D005808	Genes, Recessive	Genes that influence the PHENOTYPE only in the homozygous state.	Conditions, Recessive Genetic,Genetic Conditions, Recessive,Recessive Genetic Conditions,Condition, Recessive Genetic,Gene, Recessive,Genetic Condition, Recessive,Recessive Gene,Recessive Genes,Recessive Genetic Condition

Related Publications

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Flicker electroretinogram in retinitis pigmentosa.

March 1986, Documenta ophthalmologica. Advances in ophthalmology,

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[The electroretinogram in central retinitis pigmentosa].

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Retinitis pigmentosa with normal electroretinogram.

April 1957, A.M.A. archives of ophthalmology,

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September 1961, Experimental eye research,

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Retinitis pigmentosa, the electroretinogram, and Mendel's laws.

January 1973, Transactions - Pennsylvania Academy of Ophthalmology and Otolaryngology,

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Photopic electroretinogram implicit time in retinitis pigmentosa.

January 1993, Japanese journal of ophthalmology,