Agreement Between Lea Symbols and Patti Pics Visual Acuity in Children and Adults

Arjun Sapkota, Himalaya Eye Institute, Pokhara University, Nepal
Sanjeeta Sitaula, Institute of Medicine, Kathmandu, Nepal
Gauri Shankar Shrestha, Institute of Medicine, Kathmandu, Nepal
Niraj Dev Joshi, Institute of Medicine, Kathmandu, Nepal
Bipin Koirala, Himalaya Eye Institute, Pokhara University, Nepal
Nabin Paudel, Technological University Dublin

Document Type Article

https://www.sciencedirect.com/science/article/pii/S1888429623000031

Arjun Sapkota, Sanjeeta Sitaula, Gauri Shankar Shrestha, Niraj Dev Joshi, Bipin Koirala, Nabin Paudel, Agreement between Lea Symbols and Patti Pics visual acuity in children and adults, Journal of Optometry, Volume 16, Issue 3, 2023, Pages 229-235,

https://doi.org/10.1016/j.optom.2023.01.004

Abstract

Patti Pics (PP) and Lea Symbols (LS) are commonly used by eye care practitioners worldwide. Although the relationship between the two tests is fairly well understood, the availability of different chart designs (single optotypes, multiple optotypes, multiple optotypes with crowding box) merits futher understanding. The purpose of this study is to explore the agreement between the acuity measures obtained with Patti Pics and Lea Symbols in children and adults and compare their performance with the Sloan Letter (SL) chart in adults.