December 2002
Volume 43, Issue 13
Free
ARVO Annual Meeting Abstract  |   December 2002
Optimum Visual Acuity in Patients with Submacular Neovascularization
Author Affiliations & Notes
  • H Suzuki
    Ophthalmology Fujita Health Univ Sch of Med Toyoake Japan
  • Y Kojima
    Ophthalmology Fujita Health Univ Sch of Med Toyoake Japan
  • Y Shimada
    Ophthalmology Fujita Health Univ Sch of Med Toyoake Japan
  • K Hori
    Ophthalmology Fujita Health Univ Sch of Med Toyoake Japan
  • H Yamada
    Ophthalmology Fujita Health Univ Sch of Med Toyoake Japan
  • M Horiguchi
    Ophthalmology Fujita Health Univ Sch of Med Toyoake Japan
  • Footnotes
    Commercial Relationships   H. Suzuki, None; Y. Kojima, None; Y. Shimada, None; K. Hori, None; H. Yamada, None; M. Horiguchi, None.
Investigative Ophthalmology & Visual Science December 2002, Vol.43, 1222. doi:
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      H Suzuki, Y Kojima, Y Shimada, K Hori, H Yamada, M Horiguchi; Optimum Visual Acuity in Patients with Submacular Neovascularization . Invest. Ophthalmol. Vis. Sci. 2002;43(13):1222.

      Download citation file:


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

      ×
  • Supplements
Abstract

Abstract: : Purpose: We reported that the standard visual acuity chart underestimates the acuity of patients with a macular hole and have developed a new chart, the multiple letter acuity chart (MLAC), to measure the optimum acuity (IOVS, 2001). In this study, we used the MLAC in patients with a sub-macular neovascularization (SNV), in which the size of central scotoma was larger than the macular hole. Methods: The MLAC consists of 14 plates (45 x 45 cm), and on one plate, many Landolt rings (C's) are printed with the gaps pointing in the same direction and all of the same size. The letter spacing was 33% of the letter size. The size of the letter was equivalent to visual acuities of 0.1, 0.15, 0.2, 0.3, 0.4 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.2, 1.5 and 2.0, when presented at 5 meters. The charts were presented at 1, 2.5, and 5 meters, and the plates subtended a 5 x 5, 10 x 10 and 25 x 25 degrees on the macula, respectively. The subjects were informed that all C's on the plate had the gap in the same direction and instructed to identify the direction of the gap in any C they could see. Twenty-two patients with SNV (65±8 years) were recruited. The size of the SNV varied from 2 to 20 degrees. Results: The mean acuity (log MAR) determined by the standard chart was 1.25±0.23, and that by MLAC was 0.78±0.23 (P=0.001). The patients with larger lesions required shorter measuring distance to achieve optimum acuity. Conclusion: The standard acuity chart underestimates the acuity in patients with SNV, and MLAC is very useful to measure optimum acuity in patients whose lesions are less than 20 degrees.

Keywords: 308 age-related macular degeneration • 620 visual acuity • 483 neovascularization 
×
×

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.

×