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Adherence to dietary guidelines and the 10-year cumulative incidence of visual impairment: The blue mountains eye study

Journal Article


Abstract


  • Purpose To assess whether adherence to dietary guidelines at baseline is associated with the incidence of visual impairment among older persons after 10 years. Design A population-based cohort of 3654 participants of the Blue Mountains Eye Study were examined at baseline and were reexamined after 5 and 10 years. Methods The incidence of visual impairment was defined as best-corrected visual acuity (VA) <20/40 at follow-up in 1 or both eyes. Dietary information was obtained at baseline using a validated food frequency questionnaire (FFQ). Total Diet Score (TDS) was calculated based on the Australian diet quality index. TDS includes components of diet quality; poor dietary habits; and energy balance. Discrete logistic regression models with time-dependant outcome variables were used to calculate hazard risk ratios (HR) and 95% confidence intervals (CI) associated with incidence of visual impairment for each unit/quartile increase in TDS, adjusting for potential confounders. Results Of the 3654 baseline participants, 1963 had up to 10 years follow-up with completed FFQs. With each unit increase in TDS, the risk of visual impairment decreased (HR 0.94, 95% CI 0.88-1.00). The risk of developing visual impairment was lower among persons in the highest compared to the lowest TDS quartile (HR 0.71, 95% CI 0.47-1.05). This association was significant among persons aged 65+ years (HR 0.63, 95% CI 0.38-0.98) but not those aged <65 years (HR 0.95, 95% CI 0.46-1.97). Conclusions Compliance to dietary guidelines was associated with a decreased long-term risk of visual impairment in this sample of Australians aged 65+ years.

Authors


  •   Hong, Thomas (external author)
  •   Flood, Vicki M.
  •   Rochtchina, Elena (external author)
  •   Mitchell, Paul (external author)
  •   Russell, Joanna C.
  •   Wang, Jie (external author)

Publication Date


  • 2014

Citation


  • Hong, T., Flood, V., Rochtchina, E., Mitchell, P., Russell, J. & Wang, J. (2014). Adherence to dietary guidelines and the 10-year cumulative incidence of visual impairment: The blue mountains eye study. American Journal of Ophthalmology, 158 (2), 302-308.

Scopus Eid


  • 2-s2.0-84904996094

Ro Metadata Url


  • http://ro.uow.edu.au/sspapers/1069

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 302

End Page


  • 308

Volume


  • 158

Issue


  • 2

Place Of Publication


  • United States

Abstract


  • Purpose To assess whether adherence to dietary guidelines at baseline is associated with the incidence of visual impairment among older persons after 10 years. Design A population-based cohort of 3654 participants of the Blue Mountains Eye Study were examined at baseline and were reexamined after 5 and 10 years. Methods The incidence of visual impairment was defined as best-corrected visual acuity (VA) <20/40 at follow-up in 1 or both eyes. Dietary information was obtained at baseline using a validated food frequency questionnaire (FFQ). Total Diet Score (TDS) was calculated based on the Australian diet quality index. TDS includes components of diet quality; poor dietary habits; and energy balance. Discrete logistic regression models with time-dependant outcome variables were used to calculate hazard risk ratios (HR) and 95% confidence intervals (CI) associated with incidence of visual impairment for each unit/quartile increase in TDS, adjusting for potential confounders. Results Of the 3654 baseline participants, 1963 had up to 10 years follow-up with completed FFQs. With each unit increase in TDS, the risk of visual impairment decreased (HR 0.94, 95% CI 0.88-1.00). The risk of developing visual impairment was lower among persons in the highest compared to the lowest TDS quartile (HR 0.71, 95% CI 0.47-1.05). This association was significant among persons aged 65+ years (HR 0.63, 95% CI 0.38-0.98) but not those aged <65 years (HR 0.95, 95% CI 0.46-1.97). Conclusions Compliance to dietary guidelines was associated with a decreased long-term risk of visual impairment in this sample of Australians aged 65+ years.

Authors


  •   Hong, Thomas (external author)
  •   Flood, Vicki M.
  •   Rochtchina, Elena (external author)
  •   Mitchell, Paul (external author)
  •   Russell, Joanna C.
  •   Wang, Jie (external author)

Publication Date


  • 2014

Citation


  • Hong, T., Flood, V., Rochtchina, E., Mitchell, P., Russell, J. & Wang, J. (2014). Adherence to dietary guidelines and the 10-year cumulative incidence of visual impairment: The blue mountains eye study. American Journal of Ophthalmology, 158 (2), 302-308.

Scopus Eid


  • 2-s2.0-84904996094

Ro Metadata Url


  • http://ro.uow.edu.au/sspapers/1069

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 302

End Page


  • 308

Volume


  • 158

Issue


  • 2

Place Of Publication


  • United States