Visual impairment in adult people with intellectual disability: literature review.
Adults with ID have high rates of untreated visual impairment—routine professional eye exams, not staff questionnaires, are needed.
01Research in Context
What this study did
Warburg (2001) read every paper on eyesight in adults with intellectual disability.
The review asked: how many adults have vision loss, and who is missing it?
No new data were collected; the author summed up what others found.
What they found
Untreated visual impairment is common and grows with age and ID severity.
Staff checklists miss most problems; only full eye exams catch them.
The papers agree: adults with ID need routine optometry, not informal screens.
How this fits with other research
Evenhuis (1995) tracked the same group for ten years and showed vision loss climbs fast after age fifty.
The 2001 review bundles that climb with newer studies and repeats the warning.
McGonigle et al. (2014) zoom in on Down syndrome and map cataracts, keratoconus, and early Alzheimer eye changes decade by decade.
Together the papers draw one line: vision problems rise with age in ID, and we still spot them too late.
Why it matters
If you serve adults with ID, add a standing optometry referral to every annual health plan. Do not trust “seems to see fine.” A fifteen-minute eye exam can restore lost learning, cut falls, and reduce “behavior” that is really blurred vision.
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02At a glance
03Original abstract
The present paper reviews studies on the prevalence of visual impairment (VI) in adults with intellectual disability (ID). Every publication describes an alarming prevalence of blindness and VI. Cataract and keratoconus were common. Many cases of poor distance vision were treatable by ordinary spherical or astigmatic glasses, but few people had had such prescriptions. Elderly residents in community and institutional care often did not receive glasses for near vision. Professional assessments disclosed higher prevalences of VI than questionnaires mailed to the care personnel. The prevalence of VI increased dramatically with the severity of ID and with age. Regular professional assessment of eye disorders, visual acuity and refraction are warranted in residents in both hospital and community care.
Journal of intellectual disability research : JIDR, 2001 · doi:10.1046/j.1365-2788.2001.00348.x