Impact of visual impairment on quality of life: a comparison with quality of life in the general population and with other chronic conditions. — ME/CFS Atlas
Impact of visual impairment on quality of life: a comparison with quality of life in the general population and with other chronic conditions.
Langelaan, Maaike, de Boer, Michiel R, van Nispen, Ruth M A et al. · Ophthalmic epidemiology · 2007 · DOI
Quick Summary
This study looked at how visual impairment affects people's quality of life by comparing visually impaired patients with healthy people and those with other chronic conditions. Researchers found that visual impairment has a significant negative impact on quality of life, affecting people's daily functioning. Interestingly, only a few conditions—including chronic fatigue syndrome—impacted quality of life more severely than visual impairment.
Why It Matters
This study is relevant to ME/CFS research because it uses the same standardized HRQoL measurement tool (EQ-5D) to compare chronic conditions and explicitly identifies chronic fatigue syndrome as one of the few conditions with greater quality-of-life impact than visual impairment. This provides evidence for the severity of functional impairment in ME/CFS relative to other well-recognized chronic diseases, supporting the clinical recognition of ME/CFS as a serious disabling condition.
Observed Findings
Visually impaired patients had an average EQ-5D index score of 0.73 (SD 0.22), indicating substantial quality-of-life impairment.
Visually impaired patients reported more problems on every EQ-5D dimension compared to the general Dutch population.
Only stroke patients and patients with chronic fatigue syndrome reported more problems across all EQ-5D dimensions than visually impaired patients.
Visual impairment impact was greater than diabetes type II, coronary syndrome, and hearing impairment, but less than stroke, MS, CFS, major depressive disorder, and severe mental illness.
Inferred Conclusions
Visual impairment has a substantial and multidimensional impact on quality of life, comparable to or exceeding several common chronic conditions.
Chronic fatigue syndrome is among the most functionally impairing chronic conditions in terms of quality-of-life impact, exceeded only by stroke.
Standardized quality-of-life measurement tools like the EQ-5D enable meaningful comparison of disease burden across different chronic conditions.
Remaining Questions
What specific EQ-5D dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression) are most severely affected in ME/CFS compared to visual impairment?
Does quality-of-life impairment in ME/CFS remain stable over time or worsen with disease duration?
What This Study Does Not Prove
This study does not establish causation or mechanisms—it only describes and compares quality of life across conditions at a single time point. The study does not evaluate ME/CFS directly; it only cites published comparison data, so findings about ME/CFS severity rely on external sources rather than direct measurement in this cohort. The cross-sectional design cannot determine whether quality-of-life impacts persist over time or how they evolve.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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