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AMD Severity ScaleAstigmatism AssistantBarrett / SRK-T SimDiabetic Retinopathy RiskGlaucoma ProgressionGlaucoma Risk (OHTS)Graves CASHFA MD to VFI ConverterIOP Correction (CCT)LogMAR <-> SnellenMRD AssessmentROP Risk (G-ROP)SPEED Score (Dry Eye)SUN Uveitis GradingVertex Distance
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LogMAR <-> Snellen

log
BetterVisual Acuity ScalePoorer
Snellen Equivalent
--/--
Excellent Vision
Guidelines & Evidence

Verified

Last Review: 2026

When to Use

When to Use

Standardization of visual acuity in clinical trials
Low vision assessment where Snellen charts lack resolution
Pediatric ophthalmology scoring
Calculating mean visual acuity across a population

Last Comprehensive Review: 2026

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