Difference between revisions of Snellen chart

Snellen chart (view source)

28 bytes added , 23 February 2022

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   ==Tools==
-* [http://www.i-see.org/block_letter_eye_chart.pdf Block Letter Eye Chart with calibration measurement instructions 20m/6ft)]
+* [http://www.i-see.org/block_letter_eye_chart.pdf Block Letter Eye Chart with calibration measurement instructions 20feet/6meters)]
-* [http://www.i-see.org/etdrs/etdrs-1.pdf ETDRS Snellen version 1 20m/6ft]
+* [http://www.i-see.org/etdrs/etdrs-1.pdf ETDRS Snellen version 1 20feet/6meters]
-* [http://www.i-see.org/etdrs/etdrs-2.pdf ETDRS Snellen version 2 20m/6ft]
+* [http://www.i-see.org/etdrs/etdrs-2.pdf ETDRS Snellen version 2 20feet/6meters]
-* [http://www.i-see.org/etdrs/etdrs-r.pdf ETDRS Snellen version 3 20m/6ft]
+* [http://www.i-see.org/etdrs/etdrs-r.pdf ETDRS Snellen version 3 20feet/6meters]
 * [https://www.provisu.ch/images/PDF/Snellenchart_en.pdf Printable Snellen Chart 2.8m(9 feet)]