Can I purchase a corrective lens spectacle over the counter so as not to waste anyone's time?

Readymade reading spectacles to correct presbyopia (which is the condition which happens as we get older and need a prescription to read but not to see in the distance) only can be sold by anyone. These spectacles are limited in that they have a maximum prescription of +4 Dioptres and right and left lenses are identical. You should not avoid having your eyes examined regularly (at least every 2 years) as an eye examination does not only check your sight but it also examines the health of your eyes. Many conditions, such as glaucoma, are more common as we get older and do not cause any symptoms until permanent visual loss has occurred.