Refractive errors in an older population : The Blue Mountains eye study.
To determine prevalence and associations with refractive errors in a defined older population.
A total of 3654 residents, aged 49-97, of the Blue Mountains, west of Sydney, Australia.
Comprehensive questionnaire and detailed eye examination, including refraction.
Main Outcome Measures
Refractive error of phakic eyes, age, gender, and education.
Prevalence rates were determined for myopia (15%), hyperopia (57%), and emmetropia (28%). Hyperopia prevalence was age-related, increasing from 36% in persons aged<60 years to 71% of persons aged >=80 (P<0.0001), whereas myopia prevalence decreased with age, from 21% in persons aged<60 years to 10% of persons aged >=80 years (P<0.0001).
Younger myopic subjects in this population reported first wearing distance correction at a significantly younger age than older subjects, P<0.0001.
After adjustment for age, women were slightly more hyperopic (mean+0.75 diopters [D]) than men (mean+0.59 D, P=0.0012.
The gender-adjusted mean spherical error increased with age from+0.03 D in persons aged<60 years to+1.2 D in persons aged >=80 years (P<0.0001).
The gender-adjusted mean cylinder power also increased with age, from - 0.6 D in persons aged<60 years to - 1.2 D in persons aged >=80 years (P<0.0001).
The mean axis of astigmatism was « against the rule » in all age groups.
Anisometropia increased with age, from a mean of 0.4 D in persons aged<60 to 0. (...)
Mots-clés Pascal : Trouble réfraction oculaire, Prévalence, Association, Australie, Océanie, Etude transversale, Personne âgée, Homme, Oeil pathologie, Trouble vision
Mots-clés Pascal anglais : Refractive error, Prevalence, Association, Australia, Oceania, Cross sectional study, Elderly, Human, Eye disease, Vision disorder
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0340731
Code Inist : 002B09K. Création : 14/12/1999.