The testing procedure involves three main tests for safety glasses under ANSI Z87.1-2015. The first test is the Visual Impact Test, which is designed to determine how well the lens can resist impact from a flying object. The second test is the High Mass Impact Test, which tests the lens for resistance to high-velocity impact. Finally, the third test is the UV Test, which checks to ensure the lens provides adequate protection from ultraviolet light.

In the Visual Impact Test, a steel ball weighing between .25 and .50 ounces is dropped from 50 inches onto the lens. The lens must remain intact, with no more than a small scratch on the surface. If the lens passes this test, it is deemed to provide adequate protection.

The High Mass Impact Test is similar to the Visual Impact Test, except that a 1-ounce steel ball is dropped from a height of 100 inches. The lens must remain intact and provide no more than a small scratch on the surface. If the lens passes this test, it is deemed to provide adequate protection.

The UV Test is designed to ensure that the lens can filter out harmful ultraviolet rays. To pass this test, the lens must be examined under a UV lamp and must block at least 99.9% of the UV rays. If the lens passes this test, it is deemed to provide adequate protection.