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How to interpret the HRT
Vellore Parthasarathy
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Overview Scanning LASER Ophthalmoscopy Numerical values
Technological assumption - Reference plane Contour line Good quality images
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Reference plane Papillomacular bundle 350-356 degrees
50 nm from retinal surface
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What to look for first? Image centration Contour line Topographic
standard deviation Other clues blood vessels image borders, illumination.
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Topographic progression analysis
Red for progression Green for anterior displacement
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Summary Image Quality Top 5 parameters Moorfield’s Regression
Trend report
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Remember ! The name of the game
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Follow up over time Thank you !
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