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Updated: Jul 12, 2026
07:06
Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
Published on: March 29, 2022
Five-year refractive changes in an older population: the Blue Mountains Eye Study
Magdalena Guzowski1, Jie Jin Wang, Elena Rochtchina
1Department of Ophthalmology, University of Sydney Centre for Vision Research, Westmead Hospital, Hawkesbury Road, Westmead NSW 2145, Sydney, Australia.
Ophthalmology
|July 18, 2003
Summary
Refractive error shifts hyperopically before age 65 and myopically thereafter in older adults. Nuclear cataract severity strongly predicts myopic shift, influencing refractive error changes over five years.
Area of Science:
- Ophthalmology
- Gerontology
- Refractive Error Research
Background:
- Refractive error changes are common in aging populations.
- Understanding these changes is crucial for managing age-related vision impairment.
Purpose of the Study:
- To investigate the 5-year progression of refractive error and astigmatism in individuals aged 49 and older.
- To identify factors influencing these refractive changes in an aging cohort.
Main Methods:
- Population-based cohort study involving 2335 participants aged 49+ from the Blue Mountains Eye Study.
- Subjective refraction and detailed eye assessments were conducted at baseline and after 5 years.
- Spherical equivalent was used to measure refractive error; only phakic eyes with good visual acuity were included.
Main Results:
- Refractive error showed a hyperopic shift in younger age groups (under 65) and a myopic shift in older groups.
- Increased nuclear cataract severity was significantly associated with a myopic shift (-0.33 D).
- Astigmatism changes were minimal, with the axis remaining stable in most participants.
Conclusions:
- Refractive error in older adults exhibits age-dependent directional shifts, a hyperopic shift before 65 and a myopic shift after.
- The development of nuclear cataract is a key factor driving myopic shifts in refractive error.
- These findings contribute to understanding age-related visual changes and the impact of cataracts.
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