B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
84%
84% -- eye strain and headache reduction rate for employees near windows (2026)
Employees working near windows reported an 84% reduction in eye strain and headaches according to Cornell University researchers.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
84%
Unit
Percentage
Data Vintage
2026
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Cornell University
Primary
Tier C
https://www.analogydesign.co/blog/designing-an-inspiring-wfh-space-for-employee-engagement ↗
Source Article
The WFH Space Inspiration Guide For Remote Teams
Original Research
Cornell University
· Original study ↗
Methodology
Cited Cornell University research on natural light in workplaces; original study details not provided
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
employees near windows: 84% eye strain and headache reduction rate. Source: Cornell University (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/cornell-natural-light-eye-strain-reduction
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<blockquote cite="https://lighthousedata.io/data/cornell-natural-light-eye-strain-reduction" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>84%</strong> -- eye strain and headache reduction rate for employees near windows<br><small>Source: Cornell University (2026) · <a href="https://lighthousedata.io/data/cornell-natural-light-eye-strain-reduction" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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