Who is known? The lens looks like a blind turn to expand See the dust that stuck to one another, and the surface of the issue may be caused by a blind turn lens lens Demolding because at some very.
Which is well known It looks like a positive lens extended. Made visible dust stuck to the surface easily. Another issue may be caused by Demolding. The positive lens The lens is very thin edge
Which is known to the lens puffy eyes will look like expansion. To see the dust stuck to the skin easily. And the other one issue may be caused by the Demolding because the lens puffy eyes lens edge is very thin.