Lenses can be custom made in any prescription, but most soft lens companies manufacture a range of the most common prescriptions, between +8.00 to -8.00 and others range from -20.00 to - 20.00.
Yes, discount contact lens can still match your prescription exactly. All companies have quality standards that they have to meet, so regardless of where you purchase your prescription lens, you will get the same prescription all the time.
no. but you can't buy contact lens in the US without a prescription.
plano lenses
Yes the contact lens is a medical device and you need a prescription form an eye doctor to order them (especially online).
92311prescription of optical and physical characteristics of and fitting of contact lens, with medical supervision of adaptation; corneal lens for aphakia, 1 eye92312 prescription of optical and physical characteristics of and fitting of contact lens, with medical supervision of adaptation; corneal lens for aphakia, both eyes92313 prescription of optical and physical characteristics of and fitting of contact lens, with medical supervision of adaptation; corneoscleral lens
Contact lens thicknesses range about 80-120 micrometers depending upon the make, model, and size.
The base curve is the radius of the sphere of the back of the lens that the prescription describes.
yes but it would feel wierd.
The amount of curve (convex) in the lens determines the strength of the lens, thereby determining the effectiveness (or strength) of the lens. This is how the prescription strength of contact lenses is determined.
Yes.
The cutting of a prescription lens takes about 15 minutes per lens.
Yes- it is not as common for a prescription tro improve but it does happen.