Visibility Vol 15 Issue 2, 2021

High Plus Lens Power Measurement Reliability in a Clinical Low Vision Setting

Magnifiers can be specified by magnification (M) or equivalent power (Fe). When comparing these two, Fe is the only independent and constant descriptor and therefore preferred in low vision practice. Yet, Fe in high plus lenses cannot be easily nor reliably measured with a clinical instrument, such as a lensometer. This study looks for the shortest possible distance under which unknown high plus lenses/magnifiers can be measured and still yield clinically acceptable Fe values.

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Well-Being and Mental Health Factors among Informal Caregivers of Individuals with Visual Impairments

Callie Victor, PhD, OTR/L, CLA; Matthew Haase, MS, OTR/L, ATC; Michael Bown; Lindsey Bates, OTR; Michael Centra, OTR/L; Jaclyn Sachleben; Elizabeth Tyson; Michelle Gamber, DrPH; Suleiman Alibhai

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Stand Magnifier Optical Strategies

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Characteristics of Older Bioptic Drivers: Effects of Increasing Age on Driving Safety

Bradley E. Dougherty, OD, PhD

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