December 2002
Volume 43, Issue 13
ARVO Annual Meeting Abstract  |   December 2002
Is Spatial Contrast Sensitivity Pressure-sensitive in Humans?
Author Affiliations & Notes
  • CD Sangermani
    Ophthalmology University Parma Parma Italy
  • N Ungaro
    Ophthalmology University Parma Parma Italy
  • L Cimino
    Ophthalmology University Parma Parma Italy
  • M Tardini
    Ophthalmology University Parma Parma Italy
  • SA Gandolfi
    Ophthalmology University Parma Parma Italy
  • Footnotes
    Commercial Relationships   C.D. Sangermani, None; N. Ungaro, None; L. Cimino, None; M. Tardini, None; S.A. Gandolfi, None. Grant Identification: Support: M.I.U.R. local Grant, FIL 1999
Investigative Ophthalmology & Visual Science December 2002, Vol.43, 2156. doi:
  • Views
  • Share
  • Tools
    • Alerts
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      CD Sangermani, N Ungaro, L Cimino, M Tardini, SA Gandolfi; Is Spatial Contrast Sensitivity Pressure-sensitive in Humans? . Invest. Ophthalmol. Vis. Sci. 2002;43(13):2156.

      Download citation file:

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

  • Supplements

Abstract: : Purpose:to measure the effect of a surgical reduction of IOP on spatial contrast sensitivity threshold in eyes showing a IOP ≷ 30 mmHg and no glaucomatous visual field defect on white-on-white computer-assisted static perimetry Methods:prospective clinical trial, lasting 36 months; 10 consecutive subjects with untreated IOP ≷ 30 mmHg in one eye, IOP 20/20 in both eyes and scheduled for a primary trabeculectomy in the eye showing a high IOP . Spatial contrast sensitivity threshold (CSV1000 chart, Vector Vision, Daytona OH, USA) was measured before surgery and at each follow up visit. Results:pre-operative spatial contrast sensitivity was worse in those eyes bearing a high IOP with respect to the normal fellow eyes (paired samples t test, p < 0.0005); an improvement of contrast sensitivity threshold, exceeding the 95% confidence limits of the pre-operative test-retest variability, was observed at 3, 6 and 12 cyc / deg in each operated eye at the end of follow up. No change was observed in the fellow untreated normal eyes. The improvement was directly correlated with the amount of pressure drop obtained by surgery. Conclusion:eyes with no field defects, but bearing a IOP ≷ 30 mmHg, showed a decreased spatial contrast sensitivity. A surgically-obtained reduction of IOP could restore the sensitivity into the normal range.

Keywords: 368 contrast sensitivity • 444 intraocular pressure 

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.