ETDRS远用视力表-E（500044）
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Tumbling E ETDRS Chart
Tumbling E illiterate ETDRS chart with proportionally spaced (logMAR) line size range from 20/200 to 20/10 (6/60 to 6/3) equivalent, 0.10 to 2.00. Chart size is 24.5" x 25.5, 62 cm x 65 cm and fits all standardized ETDRS viewers.
13 feet/4 meter testing distance.
规格
500044
品牌
GOOD-LITE(美国）
