The first eyeglasses were made in Italy at about 1286.
Not all spectacles for myopia are made of glass, and in those that are, any optical-quality glass would work.
I assume you mean spectacles? In which case, you must first have your eyes tested, and the Optician will have your spectacles made to your prescription.
The first eyeglasses were made in Italy at about 1286.
The noun spectacles is a shortened form for the term 'pair of spectacles'. The plural form is two pairs of spectacles.The nouns spectacles belongs to a group of nouns that are a shortened form for 'a pair of', for example:binocularsglassespantsscissorsshearsshortsspectaclestongstrouserstweezersAll of these nouns are made plural by changing 'a pair of...' to 'pairs of...'.
The same person as if they were not wearing spectacles. Spectacles are worn to correct vision disorders.
what is the person wearing if he has on spectacles.?
I can't find my spectacles!
what is the person wearing if he has on spectacles.?
what is the person wearing if he has on spectacles.?
Not all... Some spectacle-makers use plastic lenses instead of glass.
There is no specific collective noun for 'spectacles' (or 'eyeglasses), most likely because spectacles aren't normally found in groups. However, if there is a group of spectacles, any noun suitable for the situation can function as a collective noun; for example a box of spectacles, a pile of spectacles, a row of spectacles, etc.