May 1989
Volume 30, Issue 5
Free
Articles  |   May 1989
Adult vernier thresholds do not increase with age; vernier bias does.
Author Affiliations
  • J V Odom
    Department of Ophthalmology, West Virginia University School of Medicine, Morgantown.
  • R J Vasquez
    Department of Ophthalmology, West Virginia University School of Medicine, Morgantown.
  • T L Schwartz
    Department of Ophthalmology, West Virginia University School of Medicine, Morgantown.
  • J V Linberg
    Department of Ophthalmology, West Virginia University School of Medicine, Morgantown.
Investigative Ophthalmology & Visual Science May 1989, Vol.30, 1004-1008. doi:
  • Views
  • PDF
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      J V Odom, R J Vasquez, T L Schwartz, J V Linberg; Adult vernier thresholds do not increase with age; vernier bias does.. Invest. Ophthalmol. Vis. Sci. 1989;30(5):1004-1008.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

Vernier acuity and vernier bias were examined in persons aged 20 to 79 years using a method of adjustments. Vernier bias (mean error) showed a sharp increase between 35 and 45. Vernier acuity (standard deviation or precision of alignment) did not vary significantly with age. These different results indicate the importance of separate evaluation of acuity and bias. Vernier acuity is little affected by minor optical changes that occur with age. Therefore, normal vernier acuity in older persons suggests that the neural substrates which underlie fine-grain discrimination of object location are unaffected by aging over the range investigated.

×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×