Visual Acuity Lower When Tested at Home Rather Than Clinic
THURSDAY, Aug. 25, 2022 (HealthDay News) -- Visual acuity (VA) is better when tested in the clinic versus at home, according to a research letter published online Aug. 18 in JAMA Ophthalmology.
Michael D. Crossland, Ph.D., from University College London, and colleagues compared at-home and in-clinic VA using data from the next clinic visit after the home assessment (mean time, 8.8 months) to determine whether differences are due to disease progression. The analysis included 79 adults (mean age, 55 years).
The researchers found that mean VA was 0.80 logMAR (Snellen equivalent 20/125) at home and 0.75 logMAR (Snellen equivalent 20/112) in the clinic. The mean difference between the at-home and in-clinic tests was −0.056 logMAR, with no systematic change observed with level of vision.
"We hypothesized that the poorer home VA values found by ourselves and others might be due to differences in lighting levels, differences in glare or light adaptation, difficulties in understanding the test, differences in motivation without a clinician being present, or perhaps by some psychological effect of being in their own home," the authors write.
The Home Acuity Test was developed by two of the study authors.
Abstract/Full Text (subscription or payment may be required)
Related Posts
Dental Health 101: Your Guide to Healthy Teeth & Gums
The health of your teeth and gums, and oral health in general, is more important...
COVID Vaccines Offer Only Some Protection for People Battling Myeloma
WEDNESDAY, Dec. 15, 2021 (HealthDay News) -- COVID-19 vaccination provides far...
‘First Impression’ Factors That Matter When Dating Turns to Love
THURSDAY, Nov. 3, 2022 (HealthDay News) -- When it comes to love, first...
CDC: Teen Girls Experiencing Increasing Levels of Sadness
MONDAY, Feb. 13, 2023 (HealthDay News) -- Adolescent girls are experiencing...