Perkins hand held applanation tonometer
 Catalogue Number: 459 Perkins hand held applanation tonometer Category: Equipment Sub-Category: Tonometer Year Of Publication/Manufacture: 1990s Time Period: 1940 to 1999 Publisher/Manufacturer: Clement Clarke Description Of Item: Perkins hand held applanation tonometer, grey plastic body with white plastic forehead rest and plastic probe Historical Significance: Tonometry when first done by optometrists in the 1960s was done using a Schiotz tonometer. Later Goldmann (1899-1991) the applanation tonometer was used, which was first introduced by Haag Streit as an accessory for the Haag Streit slit lamp. The hand held Perkins tonometer, which also uses Goldmann applanation principles, achieved high acceptance because of its ease of use without the need to bring the slit lamp to the patient. The Perkins tonometer was developed by ES Perkins in 1965 (Brit J Opthal 1965; 49: 591) How Acquired: Purchased by Victorian College of Optometry Condition: Not in working order. Makers plates lost and body cracked. Engraved with College clinic room numbers Location: Archive room. East wall Unit 3 Cupboard |