CONTACT LENSES     |   home How to order   |   side effects   |   contact lens tips and questions   |   astigmatism   |   wearing concerns   |   wearing problems   |   news and views   |   what's new   |   lens substitution   |   Using eyeglass Rx for contact lenses   |   Will eyeglass Rx work for contact lenses?   |   Is a prescription needed for contact lenses?   |   Is exam needed to order contact lenses?   |   How long will contact lenses last?   |   Blue Contact Lenses   |   Green Contact Lenses   |   Hazel Contact Lenses   |   blue colorblends   |   Violet Contact Lenses   |   green colorblends   |   Honey Colorblends Contact Lenses   |   turquoise colorblends   |   brown colorblends   |   amethyst colorblends   |   gray colorblends   |   Blue Dimensions Contact Lenses   |   Green Dimensions Contact Lenses   |   Aqua Dimensions Contact Lenses   |   new resources   |   resources page   |   Resources-2   |   resources 3   |   resources 4   |   resources 5   |   resource 6   |   resources 7   |   resources 8   |   resources 9   |   resources  10   |   resources 11   |   resources 12   |   resources 13   |   resources 14   |   resources 15   |   resources 16   |   resources 17   |   resources 18   |   resources 19   |   resources 20   |   resources 21   |   resources 22   |   resources 23   |   night vision   |   nutrition lens substitution Thicker contact lenses require a specific size or curve to fit properly and therefore a fitting is required. These thinner contact lenses come in one standardized size and curve and usually do not require additional fitting. The size has no affect on the visual correction, and because the size has little to do with the function of the contact lenses, most lenses only come in one size. Most colored contact lenses only come in a median (8.6) base curve and 14.5 diameter which makes it easy to substitute these lenses for other brands. Back to home page Click here for more questions and answers