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Newly designed self-retaining contact lens for vitreous surgery
Kakarla V Chalam1, Chirag C Patel, Vinay A Shah
1Department of Ophthalmology, University of Florida College of Medicine, Jacksonville, Florida 32209, USA. kvchalam@aol.com
Purpose:
Development of a new self-retaining acrylic contact lens for vitreous surgery.
Design:
A standard -60 diopters plano concave lens with the radius of curvature 6.7 mm (less than the cornea curvature) was modified with addition of four foot plates to facilitate stability and centration.
Methods:
A drop of viscoelastic material placed between lens and cornea induces negative suction and helps retain the lens in position.
Conclusions:
This specially designed lens eliminates the need for suturing on the sclera or dependence on the assistant to provide placement. It provides a stable well-centered view of the fundus during vitreous surgery.