NECO Near Visual Acuity Card with Lea Numbers and Symbols (Masstest Format)
The NECO(New England College of Optometry) Near Visual Acuity Card has LEA NUMBERS with line sizes of 20/400 to 20/10 distance equivalent on one side. The other side features LEA SYMBOLS in MassTest format (Massachusetts Visual Acuity Test format) with line sizes of 20/100 to 20/16 distance equivalent.
16 inch, 40 cm testing distance.
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