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Lea-Screener - Contrast sensitivity test and Visual Acuity Chart featuring LH symbols
TEST CHARTS
contrast sensitivity test; near vision test; distance vision test
Precision Vision; Hyvarinen, Lea
North America: USA, Illinois, Villa Park
Late 20th c.
plastic
overall (closed): 265 mm x 285 mm; overall (open): 532 mm x 285 mm
2015.481
TEST CHARTS
contrast sensitivity test; near vision test; distance vision test
Precision Vision; Hyvarinen, Lea
North America: USA, Illinois, Villa Park
Late 20th c.
plastic
overall (closed): 265 mm x 285 mm; overall (open): 532 mm x 285 mm
Paediatric test charts for testing visual acuity and contrast sensitivity using LH symbols. Large folding format printed in black, white and grey on four joined panels.
2015.481
Gift of Miss E. S Gould, FCOptom and Dr Michael Crossland, MCOptom, 2014 in memory of Janet Silver