Population-Level Associations Between Visual Impairment and Functional Difficulties in California

Area of Science:

• Public Health
• Epidemiology
• Gerontology

Background:

• Rising prevalence of visual impairment necessitates understanding its broader functional consequences.
• Functional difficulties, such as hearing, cognitive, and mobility impairments, often co-occur with vision loss.

Purpose of the Study:

• To examine the association between visual impairment and various functional difficulties in California.
• To analyze population-level data to understand the scope of vision impairment's impact.

Main Methods:

• Utilized American Community Survey (ACS) data from 2010-2019 for California.
• Calculated prevalence of visual impairment and functional difficulties (hearing, cognitive, ambulatory, self-care, independent living).
• Employed linear regression models adjusted for demographic and socioeconomic factors.

Main Results:

• Visual impairment prevalence in California was 2.3% in both 2010-2014 and 2015-2019 for adults aged 18+.
• Statistically significant associations were found between visual impairment and all studied functional difficulties.
• A strong positive correlation was observed with ambulatory difficulty.

Conclusions:

• Visual impairment is significantly associated with a higher prevalence of multiple functional difficulties.
• Findings suggest potential population-level impacts that warrant neighborhood-level investigation.
• Policy-based interventions are needed to address the public health burden of vision impairment.