Reporting Visual Acuities

35. Alfonso JF, Ferna´ndez-Vega L, Lisa C, Fernandes P, Gonza´lezMeijome J, Monte´s-Mico´ R. Long-term evaluation of the central vault after phakic CollamerÒ lens (ICL) implantation using OCT. Graefes Arch Clin Exp Ophthalmol 2012;250(12):1807–1812. 36. Alfonso JF, Lisa C, Abdelhamid A, Fernandes P, Jorge J, Monte´s-Mico´ R. Three-year follow-up of subjective vault following myopic implantable collamer lens implantation. Graefes Arch Clin Exp Ophthalmol 2010;248(12):1827–1835.

37. Lisa C, Alfonso JF, Alfonso-Bartolozzi B, Ferna´ndez-Vega L, Pe´rez-Vives C, Monte´s-Mico´ R. Collagen copolymer posterior chamber phakic intraocular lens supported by the ciliary sulcus to treat myopia: one-year follow-up. J Cataract Refract Surg 2015;41(1):98–104. 38. Edelhauser HF, Sanders DR, Azar R, Lamielle H. Corneal endothelial assessment after ICL implantation. J Cataract Refract Surg 2004;30(3):576–583.

REPORTING VISUAL ACUITIES The AJO encourages authors to report the visual acuity in the manuscript using the same nomenclature that was used in gathering the data provided they were recorded in one of the methods listed here. This table of equivalent visual acuities is provided to the readers as an aid to interpret visual acuity findings in familiar units.

Table of Equivalent Visual Acuity Measurements Snellen Visual Acuities 4 Meters

6 Meters

20 Feet

Decimal Fraction

LogMAR

4/40 4/32 4/25 4/20 4/16 4/12.6 4/10 4/8 4/6.3 4/5 4/4 4/3.2 4/2.5 4/2

6/60 6/48 6/38 6/30 6/24 6/20 6/15 6/12 6/10 6/7.5 6/6 6/5 6/3.75 6/3

20/200 20/160 20/125 20/100 20/80 20/63 20/50 20/40 20/32 20/25 20/20 20/16 20/12.5 20/10

0.10 0.125 0.16 0.20 0.25 0.32 0.40 0.50 0.63 0.80 1.00 1.25 1.60 2.00

þ1.0 þ0.9 þ0.8 þ0.7 þ0.6 þ0.5 þ0.4 þ0.3 þ0.2 þ0.1 0.0 0.1 0.2 0.3

From Ferris FL III, Kassoff A, Bresnick GH, Bailey I. New visual acuity charts for clinical research. Am J Ophthalmol 1982;94:91–96.

52

AMERICAN JOURNAL OF OPHTHALMOLOGY

FEBRUARY 2016