The Essel Pupillometer

Catalogue Number: 1702
The Essel Pupillometer
Category: Equipment
Sub-Category: PD ruler, pupillometer
Year Of Publication/Manufacture: 1969
Time Period: 1940 to 1999
Place Of Publication/Manufacture: Paris
Publisher/Manufacturer: Essel
Description Of Item: Pupillometer for measuring pupil size and interpupillary distance, being two parallel cream coloured metal tubes with positive lenses in user's eyepieces. Plastic rims at the patient's end have space to allow insertion of supplementary lenses. Millimetre scale allows monocular pupillary distances to be read. Black metal occluder at user's end sprung to occlude each eye alternately. Engraved ESSEL on bridging bar between patient eyepieces
Historical Significance: See also Cat 1550 for another example, which is boxed and has supplementary lenses. These are missing for this example. See Cat No 1870 for the instruction manual for a later pupillometer marketed by Essilor.
How Acquired: Donated by Robert Kaye Sydney Optometrist
Date Acquired: December 2010
Condition: Very good
Location: Archive room. West wall. Unit 4 Drawer 3

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