Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1988-11-15
pubmed:abstractText
Using Littmann's method for correcting the magnification of central fundus photographs, we evaluated planimetrically the color slides of 88 unselected optic discs without evidence of any optic nerve disease. High myopes (less than -8.00 diopters) had been excluded. Mean optic disc area measured 2.89 +/- 0.76 mm2 (minimum 0.86 mm2, maximum 5.39 mm2), mean cup area 0.63 +/- 0.64 mm2 (minimum 0.00 mm2, maximum 3.10 mm2) and mean neuroretinal rim area 2.26 +/- 0.58 mm2 (minimum 0.86 mm2, maximum 3.84 mm2). Horizontal disc diameter ranged from 0.91 mm to 2.42 mm (mean 1.79 +/- 0.27 mm) and vertical diameter from 1.08 mm to 2.76 mm (mean 1.97 +/- 0.29 mm). Coefficients of variation of the method's reproducibility were 0.03 for intraobserver and 0.03 for interobserver determination. Regarding the Gaussian distribution curve based on these preliminary data, microdiscs can be defined as being smaller than 1.4 mm2 (mean minus two standard deviations) and macrodiscs as being larger than 4.4 mm2 (mean plus two standard deviations).
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0721-832X
pubmed:author
pubmed:issnType
Print
pubmed:volume
226
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
332-6
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Variability of the real dimensions of normal human optic discs.
pubmed:affiliation
Institut für Augenheilkunde und Augenklinik, Universität Erlangen-Nürnberg, Federal Republic of Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't