Shortcomings in the current practice of visual acuity measurement


Encouragement and motivation impact outcomes

In light of these issues, we performed a multicentre study to determine whether encouragement and motivation would have any significant impact on the outcome of the VA measurement using the standard Snellen chart after the initial reading of the test chart.11


When the patient stated what he/she can read, the examiner tried to motivate and encourage the patient to read more, using the following prompts:

1. The patient was asked if he/she could read below the line that he/she stopped at initially.

Each patient's VA was measured three times. Firstly, unaided then with the assistance of spectacles and finally with pinhole. Results both without and with encouragement were recorded and all patients were informed and consented to the study. To investigate the statistical significance of motivation on the patients VA tests, we also applied paired t-test and P values to the results.

Related Videos
ARVO 2024: Andrew D. Pucker, OD, PhD on measuring meibomian gland morphology with increased accuracy
 Allen Ho, MD, presented a paper on the 12 month results of a mutation agnostic optogenetic programme for patients with severe vision loss from retinitis pigmentosa
Noel Brennan, MScOptom, PhD, a clinical research fellow at Johnson and Johnson
ARVO 2024: President-elect SriniVas Sadda, MD, speaks with David Hutton of Ophthalmology Times
Elias Kahan, MD, a clinical research fellow and incoming PGY1 resident at NYU
Neda Gioia, OD, sat down to discuss a poster from this year's ARVO meeting held in Seattle, Washington
Eric Donnenfeld, MD, a corneal, cataract and refractive surgeon at Ophthalmic Consultants of Connecticut, discusses his ARVO presentation with Ophthalmology Times
John D Sheppard, MD, MSc, FACs, speaks with David Hutton of Ophthalmology Times
Paul Kayne, PhD, on assessing melanocortin receptors in the ocular space
Osamah Saeedi, MD, MS, at ARVO 2024
© 2024 MJH Life Sciences

All rights reserved.