The L.S. keratometer, which consists of a large instrument on a heavy three-sided rounded base; the base supports a long cylindrical lens that has a round eyepiece on one end and an open tapered cylindrical metal tube on the other end; the top cylindrical section also has an axis scale and a prism …
The L.S. keratometer, which consists of a large instrument on a heavy three-sided rounded base; the base supports a long cylindrical lens that has a round eyepiece on one end and an open tapered cylindrical metal tube on the other end; the top cylindrical section also has an axis scale and a prism adjusting dial (both round), as well as a round mire box; there is a long metal arm that comes out from the base; the end of this arm has an open four-sided headrest piece that has a chin rest at the bottom and a forehead pad at the top; there are five adjustment screws on the keratometer; the keratometer has a cloth-covered electric cord coming from the mire box; the metal of the base of the keratometer is painted black; the top cylindrical section swivels around
Number Of Parts
1
Provenance
Owned by Dr. F. X. O'Connor and Miss Helen Cobb; collected by Dr. A. A. Travill for the Queen's University Faculty of Medicine Collection.
The axis scale has the numbers "180 // 170 // 160 // 150 // 140 // 130 // 120 // 110 // 100 // 90 // 80 // 70 // 60 // 50 // 40 // 30 // 20 // 10 // 0" with increment lines and the numbers "90 // 80 // 70 // 60 // 50 // 40 // 30 // 20 // 10 // 180 // 170 // 160 // 150 // 140 // 130 // 120 // 110 // 100 // 90" with increment lines and the words "VERTICAL" and "HORIZONTAL" stamped into the metal; the prism adjusting dial has numerous numbers and the words, "WITH // AGAINST // DIOPTRES // RADIUS" stamped into the metal; another area has "EYEPIECE SETTING SCREW" stamped into the metal; the top of the keratometer reads, "The // "L.S." // Keratometer // K101176" which is stamped into the metal
Permanent Location
Storage Room 0007
0007-G2-1
Dimension Notes
Length 65.0 cm x Width 25.5 cm x Depth 45.0 cm
Condition Remarks
The paint on the keratometer base is chipped in several areas; there is no corrosion visible on the metal; the electric cord is very brittle and the cloth covering is disintegrating; the keratometer was very dirty when it arrived; #2: cord frayed
Copy Type
Original
Reference Types
Other
Document
Reference Comments
Previous number #653; Faculty of Medicine Collection 1984 Inventory; see instruction manual 997.001.139
Research Facts
The keratometer was used to accurately determine corneal astigmatism