Chapter

The screening episode—visual acuity, mydriasis, and digital photography

David Roy and Jane Pitt

in Diabetic Retinopathy

Published on behalf of Oxford University Press

ISBN: 9780199544967
Published online May 2011 | e-ISBN: 9780199607235 | DOI: http://dx.doi.org/10.1093/med/9780199544967.003.0010

Series: Oxford Diabetes Library

The screening episode—visual acuity, mydriasis, and digital photography

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• Digital retinal photography has completely revolutionized the accurate detection of diabetic retinopathy (DR), allowing precise diagnosis and resulting in timely and appropriate referral to diabetic eye specialists. • Accurate measurement of visual acuity (VA) followed by adequate pupil dilatation (mydriasis) is an integral part of a DR screening episode. • A visual history is essential to record, as this may affect the clinical outcome of screening. • Obtaining digital retinal photographs (images) of acceptable quality to grade, with a low ungradable rate (< 10%), is imperative. • Practice and expertise is needed to ensure avoidance of the pitfalls of digital photography.

Chapter.  2107 words.  Illustrated.

Subjects: Endocrinology and Diabetes

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