Abstract
Peek Acuity vs Snellen Chart for visual impairment screening in leprosy: a cross-sectional study
Highlights
This study examines the reliability of Peek Acuity in performing visual acuity screening for leprosy patients
Leprosy is a chronic infectious disease caused by Mycobacterium leprae, with a high incidence of ocular involvement due to nerve damage or infiltration by the bacterium itself
This study examines the reliability of Peek Acuity in performing visual acuity screening for leprosy patients to overcome barriers in accessing ophthalmic healthcare, by comparing results of visual acuity measured with Peek Acuity and the Snellen Chart
Summary
Leprosy is a chronic infectious disease caused by Mycobacterium leprae, with a high incidence of ocular involvement due to nerve damage or infiltration by the bacterium itself. The Snellen Chart has been commonly employed as the standard for measuring visual acuity in daily practice due to its familiarity, well-recognized scoring system, small chart size and the speed of performing the test. It is limited by the non-geometric progression in the letter sizing from line to line and the inconsistent number of letters per line. LogMAR has not been widely used in routine clinical practice because it is time-consuming and has an unfamiliar scoring system.[4,5,6] Other visual acuity testing equipment such as Optotype is often expensive, ponderous and immobile which makes it difficult to implement in low-middle income countries, in rural areas where there are fewer health professionals and inaccessible ophthalmic healthcare facilities.[8]
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