Declining visual acuity in healthy eyes with age. Calculation of loss of retinal ganglion cells in the elderly and old

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Fältnamn	Indikatorer	Metadata
000		03034naa a2200265 4500
001		oai:gup.ub.gu.se/78017
003		SwePub
008		240528s2004 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://gup.ub.gu.se/publication/780172 URI
040		a (SwePub)gu
041		a eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a kon2 swepub-publicationtype
100	1	a Sjöstrand, Johan,d 1936u Gothenburg University,Göteborgs universitet,Institutionen för klinisk neurovetenskap, Sektionen för oftalmologi,Institute of Clinical Neurosciences, Section of Ophtalmology4 aut0 (Swepub:gu)xsjojo
245	1 0	a Declining visual acuity in healthy eyes with age. Calculation of loss of retinal ganglion cells in the elderly and old
264	1	c 2004
520		a Purpose: To investigate the change in visual acuity in eyes without clinical signs of any disease from 70 to 88 years. An additional aim is to calculate the corresponding loss of retinal ganglion cells or functional channels. We find it important to specifically analyze the rate of change after 70 years of age where most previous studies only present scarce data. Methods: We used recently published population data of visual acuity (VA) in healthy eyes of subjects (n=104) from 70 to 88 years of age. An eye was defined as healthy when there were no clinical signs of disease. Loss of retinal ganglion cells or functional channels was predicted from changes of VA by using previously established relationships between cell separations in the retina and spatial resolution. Results: The rate of VA decline above 70 years of age is accelerated compared to previously published data on the decline between 30 and 69 years; 0.09 log MAR/10 years and 0.03 log MAR/10 years, respectively. The calculated annual loss of functional channels corresponding to the VA change is 0.65% before 70 years and 2.0% after 70 years of age. Conclusions: Even though morphological studies have shown only limited age related losses of cells involved in the visual processing of spatial resolution our analysis shows an accelerated decline of visual acuity after 70 years of age in eyes without obvious disease.
650	7	a MEDICIN OCH HÄLSOVETENSKAPx Klinisk medicinx Oftalmologi0 (SwePub)302172 hsv//swe
650	7	a MEDICAL AND HEALTH SCIENCESx Clinical Medicinex Ophthalmology0 (SwePub)302172 hsv//eng
700	1	a Bergman, Bengt,d 1953u Gothenburg University,Göteborgs universitet,Institutionen för klinisk neurovetenskap, Sektionen för oftalmologi,Institute of Clinical Neurosciences, Section of Ophtalmology4 aut0 (Swepub:gu)xbeben
700	1	a Popovic, Zoran,d 1966u Gothenburg University,Göteborgs universitet,Institutionen för klinisk neurovetenskap,Institute of Clinical Neurosciences4 aut0 (Swepub:gu)xpopzo
710	2	a Göteborgs universitetb Institutionen för klinisk neurovetenskap, Sektionen för oftalmologi4 org
773	0	t Investigative Ophthalmology & Visual Scienceg 45q 45x 0146-0404
856	4 8	u https://gup.ub.gu.se/publication/78017

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MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Ophthalmology

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By the university: University of Gothenburg

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