LEA™-Kontrasttafel – Symbole 2,5 %VA: from 0. 13 to 2. 5 (3 m) Format: 23 cm x 35. 6 cm Good Lite: 253800 All translucent LOGMAR charts were developed for the illuminated cabinets ESV 1200 and LH 700 (#52067 and 52068). The use with illuminated cabinets allows for a standardized testing of visual functions. LEA Symbols Translucent Low Contrast Charts for Illuminated Cabinet. A low contrast test is a special way to measure visual acuity; determining how well eyes function in low light
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