CHOOSING THE RIGHT LENSES FOR YOUR VISION NEEDS
We are all well and truly living in a digital age, using our eyes to look at all sorts of tasks. Have you every thought about what lens options are the right choice for your visual needs. There are so many to options to choose from.
Have you hear of multifocals lenses, or even bifocal lenses? What are reading glasses mainly used for? Do I need computer glasses? What are blue light lenses and why are they so important these days? So many questions and not always the easiest solution, however we are experienced and ready to help solve any of your vision needs.
SINGLE VISION LENSES
Single vision lenses are used to treat conditions like Myopia or short-sightedness, hyperopia or long sightedness and of course astigmatism. The entire lens is the same prescription or focus. So you can look through any part of the lenses and see clearly for the distance needed. Single Vision lenses are mostly used for distance viewing but they can also be designed to work for near tasks such as reading and computer work.
Anti-fatigue lenses have been invented to relax our eyes when viewing our smart phones and tablets. They are primarily single vision lenses with a slight boost in prescription at the bottom of the lens to enhance vision while looking at these electronic devices. Most of these lenses come standard with a blue filter to protect our eyes from the blue light emitted from electronic devices.
Bifocal lenses were first invented by Benjamin Franklin to give you dual focus on two different tasks. The top part of the lens is focused for distance viewing while the bottom part of the lens is used to focus on near tasks. We mainly prescribe bifocals for people with presbyopia but also give them to children with accommodative and convergence deficiencies. Bifocal lenses are less popular these days because of their unappealing cosmetic appearance.
Occupational lenses have only been around for 30 years coinciding with the introduction of computer in the office. These lenses are also known as extended reading lenses which gives away there function. The lens is divided in a top section which will bring into focus your computer screen (about 80cm) and the bottom section which is clear for reading (usually 40cm). These lenses also look cosmetically attractive as they don’t have a line through the lens and look like a normal single vision lens. The other main advantage is that the lenses have a reasonably big field of view so you are able to see everything on your computer screen clearly without moving your head.
Multifocal lenses have been an advancement the old bifocal design incorporating many focal points across the lens so that your are able to focus on many different distances. These lenses are ideal for people that require glasses for distance as well as reading and computer work. They are also cosmetically more attractive than bifocals as there is no line through the lens and look just like a single vision lens. Given that these lenses are used for distance, middle and near tasks, they have been designed to allow the majority of the lens area and for distance viewing (necessary when driving) and an smaller area for computer and near tasks.