used whiteware  | diamond earrings | xbox 360 repairs | learning spanishMedifast Diet

Archive for October, 2009

How do colored contact lenses work without tinting your vision?

October 22nd, 2009
MrKnowItAll asked:


I’ve always wondered how colored contact lenses work. Are they completely colored, or is there a clear spot in the center for the pupil?
If they are completely colored, wouldn’t blue contact lenses tint your vision blue, like sunglasses? If there is a clear hole for the pupil, how does the fact the pupil changes size affect things? I would think when the pupil got really small you would see a small circle of the original eye color around it, and when it got big it would tint the edge of your vision.

Donald

pet insurance | fridges and freezers  | registry cleaner | 4inkjets CouponsPrinter Ink | Printer Ink Cartridges | Printer Ink Coupons