 | Nagel anomaloscopeEquipment / Colour Vision Test Designer/inventor: Willibald A. NAGEL c 1960 Schmidt & Haensch | (Cat no. 988
)
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 | AO Space EikonometerEquipment / Equipment, other clinical Corporation: American Optical Company c 1950 Amercian Optical Company Time Period: 1940 to 1999 | (Cat no. 989
)
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 | Schiotz tonometer (Improved)Equipment / Tonometer Designer/inventor: SCHIOTZ, Hjalmar August 1980 Winters Tonometer Time Period: 1940 to 1999 | (Cat no. 992
)
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 | The AO Contrast Sensitivity Test Plates (Contrast Sensitivity System)Equipment / Visual Acuity, Contrast sensitivity tests Designer/inventor: ARDEN Geoffrey B 1982 American Optical Vision Care Products Time Period: 1940 to 1999 | (Cat no. 993
)
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