How Accurate are Our Near Reading Charts? An Assessment of 19 Charts Against ISO Standards
Timothy Isaac Murphy, Jingyi Chen, Myra Leung · 2026
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Description
Timothy Isaac Murphy and co-authors checked how faithfully near reading charts follow world standards, in a 2026 study drawn from charts used in community eye clinics. Near vision testing guides glasses and low-vision care, yet the print on many charts had never been verified.
Nineteen charts, from makers and device firms, were scanned at high resolution and their letter heights measured by three graders working alone. Contrast and line spacing were estimated too, and each chart was scored against the relevant ISO standard. Agreement among graders was checked with a standard statistic. The findings tell clinics which common charts they can trust for repeatable near vision results.
Catalog record
| CREATOR | Timothy Isaac Murphy, Jingyi Chen, Myra Leung |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 41116 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |