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Ophthalmic optics and instruments. Correlation of optotypes PAS 015 BS EN 252:2014 supersedes EN

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BS EN 252:2014 supersedes EN 252:1989 which is withdrawn

The format covers the data taken by single-channel imaging

Why should you use BS EN 4710‑03

Laid in water

It is an indispensable guide to those who specify

Ophthalmic optics and instruments. Correlation of optotypes PAS 015 BS EN 252:2014 supersedes EN1 Scope This Technical Report specifies a method of correlation between a given set of optotypes and the standard optotype (Landolt ring) formed and presented as specified in ISO 8596. All test methods are type tests and suitable equivalent test methods may be substituted.

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