A black box with a rectangular footprint has two latches on the front surface to secure the lid. The interior of the case is lined with foam which has a blue fabric cover. Recesses in this liner cradle the following objects:
One white and black instrument. The black element at the bottom of the instrument is a battery holder. The optical element, including attachment points for a viewing aperture and a prism, is located towards the other end.
One black, cone-like viewing aperture.
One extra 2.8v bulb.
One white forehead rest.
One two-gram and one five-gram weights.
One smaller black prism.
One black setting block.
Four AA batteries.
One instruction manual booklet and one separate instructional document.
Accession Number: 2018.rehab.21
Perkins Tonometer MK2; Hand-Held Applanation Tonometer.
Primary Materials: Plastic, Metal.
An embossed tag on one side of the instrument reads “Toronto Rehabilitation Institute// Asset # 27037”
A second tag with a printed bar code reads “TRI27037”
Printed on the side instrument is the following serial number “SN1999T2728”
Case: Height = 7.2, Width = 13, Length = 32.
A tonometer is an instrument for measuring intraocular pressure (IOP). This is typically done to diagnose glaucoma, a disease that can damage the optic nerve.
The Perkins tonometer is a handheld instrument that uses an optical system to measure the pressure within the eye.
Excellent: This instrument has very few visible signs of wear.
Clement Clarke International Ltd. Harlow, Essex, UK
Date of Manufacture: c. 1999
This artifact among a collection of items acquired from the Toronto Rehabilitation Institute on December 6th, 2017.
Additional Information and References:
- Donated to UTSIC