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Published on: May 25, 2020
Microperimetry and clinical practice: an evidence-based review
Samuel N Markowitz1, Sophia V Reyes
1Low Vision Service, University Health Network Hospitals, Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, Ont..
Summary
Microperimetry offers superior assessment of residual vision in macular loss patients compared to standard automated perimetry. This technology accurately measures scotoma, preferred retinal loci, and fixation stability, aiding low vision rehabilitation.
Area of Science:
- Ophthalmology
- Visual Neuroscience
- Medical Technology
Background:
- Macular vision loss significantly impacts residual visual functions, characterized by scotoma, preferred retinal loci (PRLs), and oculomotor control.
- Standard automated perimetry (SAP) has limitations in assessing these complex visual components.
- Microperimetry technology offers advanced capabilities for detailed visual function analysis.
Purpose of the Study:
- To evaluate microperimetry as a superior method for assessing residual visual functions and functional vision after macular vision loss.
- To highlight the role of microperimetry in characterizing scotoma, PRLs, and oculomotor control.
- To underscore the utility of microperimetry in low vision rehabilitation and glaucoma monitoring.
Main Methods:
- Microperimetry involves projecting stimuli directly onto the retina with precise eye-tracking for accurate test-retest of specific retinal points.
- The technology facilitates accurate determination of PRL location and fixation stability.
- Proprietary algorithms provide reliable fixation stability estimates, correlating closely with raw data calculations.
Main Results:
- Microperimetry demonstrates superiority over SAP for residual visual function assessment.
- It accurately identifies PRL location and fixation stability, crucial for low vision rehabilitation.
- Microperimeters are increasingly adopted in clinical retina and glaucoma practices for disease impact assessment.
Conclusions:
- Microperimetry is a key technology for accurately assessing residual vision in macular disease and glaucoma.
- It provides essential data for effective low vision rehabilitation by identifying optimal visual function areas.
- Microperimetry is poised to become the leading method for visual function assessment, surpassing SAP in clinical practice.
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