Correctable visual impairment in an older population: the blue mountains eye study

Area of Science:

• Ophthalmology
• Public Health
• Gerontology

Background:

• Visual impairment is a significant concern in aging populations.
• Correctable visual impairment, often due to refractive errors, can impact quality of life.
• Understanding temporal trends and associated factors is crucial for targeted interventions.

Purpose of the Study:

• To analyze changes in correctable visual impairment among older adults over a six-year period.
• To identify demographic, socioeconomic, and health-related factors associated with correctable visual impairment.

Main Methods:

• A two-cross-section community-based study (Blue Mountains Eye Study) was conducted.
• Visual acuity was measured before and after refraction in participants aged 49-97.
• Correctable visual impairment was defined as visual acuity < 20/40 improving to >= 20/40 post-refraction.

Main Results:

• The prevalence of correctable visual impairment decreased from 7.5% to 5.6% between the two cross-sections.
• Factors associated with higher odds of correctable visual impairment included living alone, reliance on community services, myopia, and poor perceived health.
• Conversely, being married, home ownership, higher education, and driving were associated with lower odds.

Conclusions:

• Correctable visual impairment in older adults is influenced by a combination of socioeconomic factors, refractive error (myopia), use of corrective lenses, and self-reported health status.
• The findings underscore the importance of regular eye examinations and addressing underlying health and social determinants.