Calculating the error in refractive error View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2011-10

AUTHORS

R H Taylor, R B Ellingham, S Subramaniam, L A Wakely

ABSTRACT

AIMS AND PURPOSE: To demonstrate a quick way of calculating the optical difference between two refractions using vector analysis, and to express this as a score for examination purposes. METHODS: An existing formula is applied, converted to a defocus equivalent, and then converted to a score. The formula is set out in an Excel spreadsheet. RESULTS: The spreadsheet enabled rapid assessment of the difference between two refractive errors. Examples are demonstrated. CONCLUSION: The spreadsheet was successful in enabling a comparison of any two refractions, expressing the difference either as a correcting (third) refraction, a defocus equivalent or a one-figure score. More... »

PAGES

1333

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/eye.2011.169

DOI

http://dx.doi.org/10.1038/eye.2011.169

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1044236058

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/21779015


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