Acuityconvert

Acuityconvert is a software utility and API designed to convert visual acuity measurements among the commonly used scales in ophthalmology and vision research. It handles conversions between Snellen fractions, decimal acuity, logMAR, and ETDRS letter counts, enabling standardized reporting and data interoperability across devices and study designs.

The tool provides single-value and batch processing capabilities, supports input validation, and offers configurable rounding and formatting options. Implementations typically expose functions or endpoints that accept an acuity value and its source scale and return the value expressed in a target scale. Many versions also include helper utilities for parsing chart data and for mapping between fractional and letter-based representations.

Applications for acuityconvert include clinical information systems, electronic health records, research data pipelines, and patient-facing interfaces where consistent acuity display is needed. By providing a centralized conversion mechanism, it aims to reduce errors and improve comparability of acuity data across platforms, studies, and reporting formats.

Limitations and considerations accompany its use. Visual acuity conversions are mathematical representations and may not capture all nuances of testing conditions, chart designs, or patient performance. They should not substitute for direct clinical assessment or diagnosis. Users are encouraged to consult the documentation of their specific implementation to understand supported scales, edge cases, and localization behavior.

Origin and availability of acuityconvert are distributed across multiple independent software projects and libraries. The term is used in various contexts to describe acuity conversion functionality, rather than a single canonical specification.