On Tuesday, January 4, 2011, Biju Chacko <[email protected]> wrote: > how could I tell if I actually got what I paid for? Cheap > and expensive lenses are essentially indistinguishable after all.
For middling to higher prescriptions, you can see higher refractive index (thin) lenses from lower refractive index (thicker) ones. You can also check the effectiveness of anti reflection coating by holding the lens at an angle. I am not aware of fool proof tests for snake oil. Thaths -- Marge: Quick, somebody perform CPR! Homer: Umm (singing) I see a bad moon rising. Marge: That's CCR! Homer: Looks like we're in for nasty weather. Sudhakar Chandra Slacker Without Borders
