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Super Pneumatic Finger Lens Impact Test Machine High Performance
Lens Drop Ball Impact Test Machine will test the impact of lenses to meet the applicable
ANSI,FDA and European requirement. All the lenses must pass an
impact test, known as the "Drop Ball Test": a 16-millimeter steel
ball is dropped onto the lens from a height of 1.27 meter
Specification:
1. Q. What are the impact testing requirements for prescription (Rx) glass lenses?
A. The manufacturer must test each finished Rx glass lens individually for impact resistance (21 CFR 801.410(c)(3)). The lens must be capable of withstanding the impact test provided in 21 CFR 801.410(d)(2) as described later in this document under “Testing Apparatus and Procedure.” You should perform testing after the lens has been edged (cut to the shape of the frame) but before the lens is put into the frame.
2.Q. What are the impact testing requirements for non-prescription (over-the-counter) glass lenses, e.g., magnifying spectacles and nonprescription sunglasses?
A. You must test a statistically significant sample of
over-the-counter glass lenses from each production batch. The
sample must be representative of the finished forms as worn by the
wearer, including forms that are of minimal lens thickness and have
been subjected to any treatment used to impart impact resistance.
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