June 2023
Volume 64, Issue 8
Open Access
ARVO Annual Meeting Abstract  |   June 2023
Acuity perimetry with speech input for mapping macular visual field in glaucoma.
Author Affiliations & Notes
  • Hatem Barhoom
    Optometry department, School of Health Professions,, University of Plymouth, Plymouth, Plymouth, United Kingdom
    Islamic University of Gaza, Gaza, Palestine, State of
  • Paul H. Artes
    Optometry department, School of Health Professions,, University of Plymouth, Plymouth, Plymouth, United Kingdom
  • Mahesh R. Joshi
    Optometry department, School of Health Professions,, University of Plymouth, Plymouth, Plymouth, United Kingdom
  • Gunnar Schmidtmann
    Optometry department, School of Health Professions,, University of Plymouth, Plymouth, Plymouth, United Kingdom
  • Footnotes
    Commercial Relationships   Hatem Barhoom None; Paul Artes None; Mahesh Joshi None; Gunnar Schmidtmann None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science June 2023, Vol.64, 5494. doi:
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    • Get Citation

      Hatem Barhoom, Paul H. Artes, Mahesh R. Joshi, Gunnar Schmidtmann; Acuity perimetry with speech input for mapping macular visual field in glaucoma.. Invest. Ophthalmol. Vis. Sci. 2023;64(8):5494.

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

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Abstract

Purpose : Acuity perimetry may be more efficient compared to contrast detection in assessing macular visual field defects. We explored the use of letters as stimuli and speech as a response method to measure macular visual sensitivity in healthy observers and those with glaucoma.

Methods : 11 eyes from 11 healthy observers and 10 eyes from 7 observers with glaucoma (macular mean deviation = -8.40 dB; SD = 5.00; M-pattern, Octopus 900, Haag-Streit, Switzerland) were examined. Letter acuity was estimated at 13 test locations within 4° from fixation (Figure 1A) using a fixed step size staircase. A speech recognition algorithm was employed as an input method to enable participants to perform the task without supervision. The observers’ perceived difficulty of the task was assessed via a questionnaire.

Results : In healthy observers, visual acuities ranged from -0.13 ± 0.03 LogMAR at fovea to 0.36 ± 0.05 LogMAR at 4° eccentricity (Figure 1B). In observers with glaucoma, resolution thresholds correlated closely with conventional perimetry (r between -0.48 (ST) to -0.85 (IT)). Most observers found the task easy to perform.

Conclusions : The results show that letter acuity perimetry with speech input is a feasible method to capture macular damage in glaucoma. These approaches may lead to more intuitive and patient-friendly tests for macular visual field assessments.

This abstract was presented at the 2023 ARVO Annual Meeting, held in New Orleans, LA, April 23-27, 2023.

 

Figure 1 shows A) Test locations. Letters are relatively scaled to the average measurements across normal observers. B) Letter acuity gradient (mean±se) across eccentricities at each quadrant.

Figure 1 shows A) Test locations. Letters are relatively scaled to the average measurements across normal observers. B) Letter acuity gradient (mean±se) across eccentricities at each quadrant.

 

Figure 2 A) The correlation between M-pattern and letter perimetries results at the four quadrants. B) The topographical correspondence in one case with glaucoma.

Figure 2 A) The correlation between M-pattern and letter perimetries results at the four quadrants. B) The topographical correspondence in one case with glaucoma.

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