Gas Permeable Hard Contacts Scratches

Hi,

When gas permeable hard contacts get scratches. What
actually happens to the lens? Can anyone point me to any
site with magnified view of a lens surface? I'd like to understand
what goes on when polishing is done to "remove" the
scratches. The technician said some scratches are deep
and can't be removed. Can these cause corneal ulcers?
How doe scratched lens surfaces damage the cornea?
I'd like to kinda imagine what goes on between the cornea
and lens with scratches and how does the frictions or
contact occurs. Thanks.

Noke

 

In other words. Even the furrows with polished edge will not do good
and one has to replace the entire lens everytime there is any trace
of scratches in the gas permeable hard contacts?? Thanks.

Noke

 

About the furrows that can cultivate bacteria and fungi. Can't
cleaning
the lens each night remove the contents in the furrows? What would
it take to remove it? I ordered a pair of gas permeable hard contact
from a manufacturer. The right side doesn't have scratch, but
unfortunately, the left side has a scratch in the middle. They
polished
it and there is still a trace of the scratch and they won't replace
it.
I can wait a week and order elsewhere but my present contact even
has more scratches (about 20). So I am wondering whether to get
it now or wait one more week for a new lens from another manufacturer.
The decision depends on knowing whether a single furrow is harmful.
Usually what would it take to remove the contents in the furrows like
polishing compound and ground-up lens material? What ingreidents
are polishing compound made of? Is it harmful to eyes? How
about the ground-up lens material. Can it cause scratches in
the eye? Thanks.

Noke

 

BTW... letterings such as UV, etc. are often edged on the GP
hard contacts lens itself. Were these lettering made of slumps?
Arethe slumps hollow or did they fill it up with another glass filler?
If hollow. Can they stuck up mucus, debris, bio-junk, bacteria,
fungi, polishing material and/or ground up lens? If so. How
come they put slump lettering when this can stuck up debris?
Thanks.

Noke