A-A-53088
31 July 1987
COMMERCIAL ITEM DESCRIPTION
LENS, OPHTHALMIC, Glass
The General Services Administration has authorized the use of this commercial item description in preference to Military Specification MIL-L-16991C.
This commercial item description covers the uncut glass ophthalmic lenses, dress type for visual deficiency correction.
Salient characteristics:
Lenses shall be classified to the following types, classes, styles, sizes and power required, as specified,
Type
I. Lens blank, semifinished
II. Lens, finished, uncut
Class
a. Bifocal
b. Single vision
c. Neutral absorption, N-21
Style
1. Spheres
2. Plano minus cylinders
3. Plus or minus compounds
4. Minus on minus compounds
5. One-piece raised ledge
6. 25mm straight top
Size. The lens diameter under this specification shall be 65 mm ± 1 mm round or 65 mm X 60 mm ± 0.5 mm rectangular with rounded corners. Other shapes are acceptable provided equivalent size is met.
All glass lenses shall be capable to the hardened by chemical or dry heat tempering process after edging to withstand the impact resistance test requirement as specified in ANSI Z80.1-1979, Recommendations for Prescriptions Ophthalmic Lenses. When requested, the contractor shall demonstrate the impact resistance test for the satisfaction of the contracting officer’s representative.
The finished lens shall be a member of an integrated series of ophthalmic lenses having surface curvatures computed to conform to the corrected curve concept.
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
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