Kelvin Haptic or Scleral lenses set

Made:
1947-1950 in Denton
maker:
Kelvin Lenses Limited
Original set of Kelvin Haptic lenses for fitting purposes in

Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Original set of Kelvin Haptic lenses for fitting purposes in
Science Museum Group
© The Board of Trustees of the Science Museum

Original set of Kelvin Haptic lenses for fitting purposes in box (2 lenses missing, rubber inserts perished), c. 1950 Scleral lenses cover the entire visible white part of the eye (the sclera). easy to handle and comfortable in comparison to rigid corneal lenses because the edge is under the lids. The major disadvantage of scleral lenses is the time and skill required in fitting. Generally made of PMMA material, which does not allow oxygen transmission, thus corneal swelling was a problem.

Details

Category:
Optics
Object Number:
1982-330
Materials:
plastic (unidentified), rubber (unidentified), wood (unidentified), leatherette, metal (unknown), copper (alloy) and brass (copper, zinc alloy)
Measurements:
overall (closed): 30 mm x 295 mm x 190 mm, , .6kg
type:
contact lens set and scleral lenses
credit:
John Phillips