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- Title
Converting LEA to Pelli-Robson contrast sensitivity score in neuro-ophthalmology patients.
- Authors
Prihatningtias, Riski; Hardiyanti, Disti; Valencia, Lovenia
- Abstract
Purpose: The Pelli-Robson and LEA contrast sensitivity charts are commonly used in clinical settings to measure contrast sensitivity. Although the Pelli-Robson chart is considered the gold standard, it is limited by its bulky size. The LEA chart, on the contrary, offers a more practical and portable option that is still reliable. This has led to questions about whether we can predict Pelli-Robson scores based on LEA scores. This study developed a conversion method to help transition from the LEA chart to the Pelli-Robson chart and validate the conversion score. Methods: In this retrospective study, we analyzed the relationship between LEA and the Pelli-Robson contrast sensitivity test. Our study examined a total of 120 eyes. We developed a conversion table through the equipercentile equating method. Subsequently, we assessed the reliability and accuracy of this algorithm for converting LEA results into Pelli-Robson contrast sensitivity scores. Results: The study used a conversion table to convert LEA scores to Pelli-Robson scores. The conversion table achieved a reliability of 0.91 based on intraclass correlation, and the algorithm had an accuracy of 81.6% within a 1-point difference from the raw score. Conclusions: This study reported a reliable and comparable conversion algorithm for transforming LEA scores into converted estimated Pelli-Robson scores, thereby improving the usefulness of existing data in both clinical and research contexts.
- Subjects
CONTRAST sensitivity (Vision); NEUROOPHTHALMOLOGY; INTRACLASS correlation; TALLIES
- Publication
Indian Journal of Ophthalmology, 2024, Vol 72, pS505
- ISSN
0301-4738
- Publication type
Article
- DOI
10.4103/IJO.IJO_3039_23