LEA™-Kontrasttafel – Symbole 2,5 %

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 situations and/or being able to distinguish objects from similarly colored or shaded backgrounds. Testing is identical to the measurement of visual acuity at high contrast level. The 2.5% test is the most practical test in clinical use. Available in 5 contrast levels: 1.25%, 2.5%, 5%, 10%, and 25%. This chart is to be used in an ESV1200 or Model A+ illuminated cabinet. Includes response key, training cards, recording forms and instructions.