Intermediate / Computer glasses
The farther away your reading material is held, the less magnification is required to correct your vision. As such, computer screens that
are on average 24″ from your eyes, or sheet music for your piano or other instruments would be considered an intermediate reading prescription. Many people spend hours on a desk top computer every day. This can be incredibly stressful for your eyes unless your vision is appropriately corrected with the proper magnification at the distance to the screen. In addition a blue light filter is usually added to the lenses to mitigate the straining effects of blue light emitted from digital devices. Your eyes will be more relaxed and the blue light will not affect your circadian rhythm which otherwise can affect your ability to fall asleep easily.
Computer task / Office lenses
Much like the intermediate/computer reading glasses, these lenses are made for reading at approximately 20″ – 26″ from your eye. Looking straight ahead provides the correct distance for intermediate reading, but the difference is that these lenses also have correction for close up reading near the bottom of your lenses. Having two focal points allow for a comfortable transition for those requiring both computer monitor vision as well as viewing paperwork and reading. These lenses can also be set up so that you are able to walk around the office with them without having to take them off as you would have to if they were only readers or only intermediate/computer reading glasses.
Progressive lenses are multifocal lenses that provide a range of viewing distances. They are convenient in that they are a “one stop
shop” where one pair of glasses allow you to see distance, intermediate and reading. The disadvantage over the readers and computer task lenses is that the visual fields for near and intermediate viewing are considerably smaller. Progressives are great for every day use, but many people find that if they are reading or on computers for hours of the day, it is best to have a second pair for the task on hand as it is less of a strain with larger viewing zones.
A consultation with any of our expert Josephson Opticians can help you to decipher which lenses would best fit your needs. Book your appointment today !