• Users Online: 1216
  • Home
  • Print this page
  • Email this page
Year : 1997  |  Volume : 45  |  Issue : 2  |  Page : 99-103

VISTECH contrast sensitivity testing in primary open angle glaucoma

Schell Eye Hospital, Christian Medical College, Vellore, India

Correspondence Address:
A Mathai
Schell Eye Hospital, Christian Medical College, Vellore
Login to access the Email id

Source of Support: None, Conflict of Interest: None

PMID: 9475027

Rights and PermissionsRights and Permissions

Contrast sensitivity has been recommended as a screening and diagnostic test in primary open angle glaucoma (POAG). We tested contrast sensitivity (CS) using Vistech charts in 184 eyes of 95 patients. Three groups were examined--established primary open angle glaucoma, glaucoma suspects and age matched controls. The distribution of contrast sensitivities amongst the three groups were similar. The median contrast sensitivity of glaucoma suspects and controls were well within normal limits while that of the POAG group fell along the lower limit of normal. In all three groups the younger subjects scored better than the older, indicating a depression of contrast sensitivity with increasing age. Even if depression of any one spatial frequency was considered abnormal, the test yielded a sensitivity of 55.4% and specificity of 69.5%. Similarly contrast sensitivity testing was found to be of little use in detecting field defects a maximum sensitivity of 47.3% and specificity of 73.3%. Vistech contrast sensitivity testing is not a useful test in POAG screening or diagnosis.

[FULL TEXT] [PDF Not available]*
Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded1    
    Comments [Add]    

Recommend this journal