Sometimes referred to as extended reading lenses, office
lenses offer a greater depth of focus than standard reading lenses. For
many people reading lenses provide excellent close vision but as they
look at a computer screen it is slightly out of focus. This is because
reading lenses are designed to work at a closer distance than that of
the computer screen. One alternative would be a separate pair of
spectacles for the computer screen but because these would focus further
away, reading then becomes an issue.
lenses combine the two prescriptions creating comfortable vision for
both screen and reading. Although we use computer screens as an example,
these lenses are also ideal for DIY and various hobbies where good close
vision is needed as well as crisp clear intermediate vision.