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This table will help readers interpret visual acuity findings in familiar units. *Courtesy Jack Holladay, MD, modified from full Holladay table. For full table, visit...
Each line on the chart represents a change of 0.1 log unit in the acuity level with each letter having a value of 0.02 log unit. Therefore a patient reading correctly all letters on a specific line will score the full 0.1 log unit.
Convert between Snellen and logMAR visual acuity measurements.
Distance visual acuity conversion chart UK Decimal LogMAR 5m US 6/3 2.00 -0.30 5/3 20/10 6/4 1.50 -0.18 20/13 ... Intermediate visual acuity conversion chart UK (at 100cm) US (at 100cm) Jaeger (at ... 20/80 J14 0.25 6/24 N36 N48 20/200 0.10 6/60 Note: the near vision conversions are approximated to the nearest N Point or Jaeger equivalent. ...
A logMAR chart (Logarithm of the Minimum Angle of Resolution) is a chart consisting of rows of letters that is used by ophthalmologists, orthoptists, optometrists, and vision scientists to estimate visual acuity.
Review The Clinical Use of Vernier Acuity: Resolution of the Visual Cortex Is More Than Meets the Eye. [Front Neurosci. 2021]
Tables are available to assist and this short article and use of these tables should be helpful, both in primary and secondary care, to ease the understanding of visual acuity measurements. Figure 1 – Snellen Chart Figure 2 – LogMAR Chart
