If you have been wearing glasses for nearly all of your lifetime, think back to when you got them. Were you in grade school? Perhaps you simply got them as an adult. Regardless how old you're when you started wearing glasses, do you remember what prompted the necessity for you yourself to use them?
Many children won't complain which they cannot start to see the black board in school, and it is usually the teacher who notices a student's behavior changing or grades slipping before a parent do. The teachers will most likely pass along any observations to the parents and the first faltering step is usually a watch exam, resulting in prescription glasses.
For children, it's common for optometrists and ophthalmologists to prescribe prescription glasses for distance vision. Even when a young child has a minor prescription need, adding glasses will drastically improve their mood, attitude, and performance at school. Once we grow older, our eyes change and our vision care needs also change. When you hit age 40, you could realize that seeing up close is becoming difficult. This creates an importance of an entirely new prescription and maybe you are needed to wear reading glasses. You can browse Steven Alan Optical store to buy Prescription Glasses for Men.
Once you've been identified as having an importance of both reading and distance correction, you will be given a third prescription and things get only a little tricky. You will truly have a prescription for reading and distance correction along with a prescription that combines the two if you want to get multifocal lenses like progressives or bifocals. Your prescription will also note two different pupil distances, one for distance and one for reading.