Hyperopic, plus powered, or convex lenses.
short sighted people need concave lenses
Long sighted people need convex lenses.
Farsighted people use convex lenses to correct their vision.(This is the correct answer!)
It depends on what the vision 'problem' is. Convex lenses are used to correct short-sighted errors, while concave lenses correct long-sighted problems.
Bifocals are a type of prescription eyeglasses designed for people who need both near and farsighted vision correction. Different from single vision lenses, bifocals have two corrective lenses on each side of a pair of glasses, for a total of four lenses per pair.
convex and concave are two types of lenses that are used to correct defects in vision.
glasseseyeglassesspectaclescontact lenses
Concave and Convex
An optician designs and fits the glasses needed to correct a person's vision. This includes grinding the lenses according to the prescription given by an optometrist.
There are plenty of night vision lenses, but they are vendor specific so make sure to get the correct one.
farsighted
No they can't. Contact lenses and glasses correct the defect to imporve vision but they are unlikely to affect the undelying cause of myopia.
Ben Franklin, they are called bifocals
They're pretty strict. You need to have 20/20 vision or lenses that can correct your vision to 20/20.