Longitudinal relationships among visual acuity and tasks of everyday life: The salisbury eye evaluation study

Byron L Lam, Sharon L. Christ, D. Diane Zheng, Sheila K. West, Beatriz E. Munoz, Bonnielin K. Swenor, David J Lee

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

PURPOSE. To study the relationships among visual and physical function trajectories of aging adults. METHODS. The community-based random sample consists of 2520 adults who were aged 65 to 84 years in 1993 to 1995 and reassessed 2, 6, and 8 years later. Presenting and best-corrected Early Treatment Diabetic Retinopathy Study visual acuity were obtained. Activities of daily living (ADLs) and instrumental ADLs (IADLs) were evaluated through survey instruments. Growth curve models were used to simultaneously estimate health trajectories and obtain associations among the trajectories while controlling for relevant covariates. RESULTS. Best-corrected acuity (logMAR) worsened by an average of 0.013 (~1 letter) annually. ADL difficulties increased by 0.22 standard deviations (SD) and IADL difficulties increased by 0.28 SD annually. Controlling for demographic and health covariates, visual acuity rates of decline correlated with rates of increase in ADL difficulties (r = 0.15, P = 0.05) and IADL difficulties (r = 0.41, P < 0.001). Acuity loss was significantly related to increases in ADLs for men (b=0.039, P < 0.01), but not for women (b=0.001, P > 0.9). The direct effects of acuity loss were strongest for IADLs where a 1-unit decline in acuity (logMAR) was associated with a 0.067 SD increase in IADL difficulties (P < 0.001) at baseline, and a 1-unit acuity decline (logMAR) per year resulted in a 0.10 SD unit increase in the rate of change in IADL difficulties (P < 0.001) per year. CONCLUSIONS. Over time, increases in visual acuity loss were related to increased IADL difficulties in men and women and increases in ADL difficulties for men only. The findings support the importance of maintaining vision in older adults.

Original languageEnglish
Pages (from-to)193-200
Number of pages8
JournalInvestigative Ophthalmology and Visual Science
Volume54
Issue number1
DOIs
StatePublished - Jan 1 2013

Fingerprint

Activities of Daily Living
Visual Acuity
Health
Diabetic Retinopathy
Demography

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems
  • Cellular and Molecular Neuroscience
  • Medicine(all)

Cite this

Longitudinal relationships among visual acuity and tasks of everyday life : The salisbury eye evaluation study. / Lam, Byron L; Christ, Sharon L.; Zheng, D. Diane; West, Sheila K.; Munoz, Beatriz E.; Swenor, Bonnielin K.; Lee, David J.

In: Investigative Ophthalmology and Visual Science, Vol. 54, No. 1, 01.01.2013, p. 193-200.

Research output: Contribution to journalArticle

Lam, Byron L ; Christ, Sharon L. ; Zheng, D. Diane ; West, Sheila K. ; Munoz, Beatriz E. ; Swenor, Bonnielin K. ; Lee, David J. / Longitudinal relationships among visual acuity and tasks of everyday life : The salisbury eye evaluation study. In: Investigative Ophthalmology and Visual Science. 2013 ; Vol. 54, No. 1. pp. 193-200.
@article{01c32b8b70c748239d20e1a0702df0bb,
title = "Longitudinal relationships among visual acuity and tasks of everyday life: The salisbury eye evaluation study",
abstract = "PURPOSE. To study the relationships among visual and physical function trajectories of aging adults. METHODS. The community-based random sample consists of 2520 adults who were aged 65 to 84 years in 1993 to 1995 and reassessed 2, 6, and 8 years later. Presenting and best-corrected Early Treatment Diabetic Retinopathy Study visual acuity were obtained. Activities of daily living (ADLs) and instrumental ADLs (IADLs) were evaluated through survey instruments. Growth curve models were used to simultaneously estimate health trajectories and obtain associations among the trajectories while controlling for relevant covariates. RESULTS. Best-corrected acuity (logMAR) worsened by an average of 0.013 (~1 letter) annually. ADL difficulties increased by 0.22 standard deviations (SD) and IADL difficulties increased by 0.28 SD annually. Controlling for demographic and health covariates, visual acuity rates of decline correlated with rates of increase in ADL difficulties (r = 0.15, P = 0.05) and IADL difficulties (r = 0.41, P < 0.001). Acuity loss was significantly related to increases in ADLs for men (b=0.039, P < 0.01), but not for women (b=0.001, P > 0.9). The direct effects of acuity loss were strongest for IADLs where a 1-unit decline in acuity (logMAR) was associated with a 0.067 SD increase in IADL difficulties (P < 0.001) at baseline, and a 1-unit acuity decline (logMAR) per year resulted in a 0.10 SD unit increase in the rate of change in IADL difficulties (P < 0.001) per year. CONCLUSIONS. Over time, increases in visual acuity loss were related to increased IADL difficulties in men and women and increases in ADL difficulties for men only. The findings support the importance of maintaining vision in older adults.",
author = "Lam, {Byron L} and Christ, {Sharon L.} and Zheng, {D. Diane} and West, {Sheila K.} and Munoz, {Beatriz E.} and Swenor, {Bonnielin K.} and Lee, {David J}",
year = "2013",
month = "1",
day = "1",
doi = "10.1167/iovs.12-10542",
language = "English",
volume = "54",
pages = "193--200",
journal = "Investigative Ophthalmology and Visual Science",
issn = "0146-0404",
publisher = "Association for Research in Vision and Ophthalmology Inc.",
number = "1",

}

TY - JOUR

T1 - Longitudinal relationships among visual acuity and tasks of everyday life

T2 - The salisbury eye evaluation study

AU - Lam, Byron L

AU - Christ, Sharon L.

AU - Zheng, D. Diane

AU - West, Sheila K.

AU - Munoz, Beatriz E.

AU - Swenor, Bonnielin K.

AU - Lee, David J

PY - 2013/1/1

Y1 - 2013/1/1

N2 - PURPOSE. To study the relationships among visual and physical function trajectories of aging adults. METHODS. The community-based random sample consists of 2520 adults who were aged 65 to 84 years in 1993 to 1995 and reassessed 2, 6, and 8 years later. Presenting and best-corrected Early Treatment Diabetic Retinopathy Study visual acuity were obtained. Activities of daily living (ADLs) and instrumental ADLs (IADLs) were evaluated through survey instruments. Growth curve models were used to simultaneously estimate health trajectories and obtain associations among the trajectories while controlling for relevant covariates. RESULTS. Best-corrected acuity (logMAR) worsened by an average of 0.013 (~1 letter) annually. ADL difficulties increased by 0.22 standard deviations (SD) and IADL difficulties increased by 0.28 SD annually. Controlling for demographic and health covariates, visual acuity rates of decline correlated with rates of increase in ADL difficulties (r = 0.15, P = 0.05) and IADL difficulties (r = 0.41, P < 0.001). Acuity loss was significantly related to increases in ADLs for men (b=0.039, P < 0.01), but not for women (b=0.001, P > 0.9). The direct effects of acuity loss were strongest for IADLs where a 1-unit decline in acuity (logMAR) was associated with a 0.067 SD increase in IADL difficulties (P < 0.001) at baseline, and a 1-unit acuity decline (logMAR) per year resulted in a 0.10 SD unit increase in the rate of change in IADL difficulties (P < 0.001) per year. CONCLUSIONS. Over time, increases in visual acuity loss were related to increased IADL difficulties in men and women and increases in ADL difficulties for men only. The findings support the importance of maintaining vision in older adults.

AB - PURPOSE. To study the relationships among visual and physical function trajectories of aging adults. METHODS. The community-based random sample consists of 2520 adults who were aged 65 to 84 years in 1993 to 1995 and reassessed 2, 6, and 8 years later. Presenting and best-corrected Early Treatment Diabetic Retinopathy Study visual acuity were obtained. Activities of daily living (ADLs) and instrumental ADLs (IADLs) were evaluated through survey instruments. Growth curve models were used to simultaneously estimate health trajectories and obtain associations among the trajectories while controlling for relevant covariates. RESULTS. Best-corrected acuity (logMAR) worsened by an average of 0.013 (~1 letter) annually. ADL difficulties increased by 0.22 standard deviations (SD) and IADL difficulties increased by 0.28 SD annually. Controlling for demographic and health covariates, visual acuity rates of decline correlated with rates of increase in ADL difficulties (r = 0.15, P = 0.05) and IADL difficulties (r = 0.41, P < 0.001). Acuity loss was significantly related to increases in ADLs for men (b=0.039, P < 0.01), but not for women (b=0.001, P > 0.9). The direct effects of acuity loss were strongest for IADLs where a 1-unit decline in acuity (logMAR) was associated with a 0.067 SD increase in IADL difficulties (P < 0.001) at baseline, and a 1-unit acuity decline (logMAR) per year resulted in a 0.10 SD unit increase in the rate of change in IADL difficulties (P < 0.001) per year. CONCLUSIONS. Over time, increases in visual acuity loss were related to increased IADL difficulties in men and women and increases in ADL difficulties for men only. The findings support the importance of maintaining vision in older adults.

UR - http://www.scopus.com/inward/record.url?scp=84874508557&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84874508557&partnerID=8YFLogxK

U2 - 10.1167/iovs.12-10542

DO - 10.1167/iovs.12-10542

M3 - Article

C2 - 23221066

AN - SCOPUS:84874508557

VL - 54

SP - 193

EP - 200

JO - Investigative Ophthalmology and Visual Science

JF - Investigative Ophthalmology and Visual Science

SN - 0146-0404

IS - 1

ER -