Blog posts of '2018' 'July'

Lens Comfort Technology for Driving

A Driving Force Behind Lens Technology

Updated: Tues, 15 May 2018


Everyone wants the best technology with the best safety features for their vehicles. However, you may have the safest vehicle on the market, but if your eye sight is compromised so is your safety.




Impaired vision is responsible for so many of our road accidents and the subsequent fatalities.


To drive this point home, here are just some of the basics as to why good vision is essential for driving:


When driving, you are required to see pretty much everything around you (all around, near and far and in every direction). For example:

-          you need to be able to see (and anticipate movement of) other vehicles

-          the plethora of pedestrians that come at us (in all shapes and sizes and from every direction)

-          animals (yes, even in our big cities)

-          potholes (in growing numbers and ever-increasing in size)

-          road signs and markings

-          and the list goes on.

And, that’s just outside your vehicle. Inside, you also need to see your speedometer and gauges, in addition to your side mirrors and rear-view mirror.


Furthermore, driving at night can be a daunting experience. Oncoming headlights and street lights reflect off one’s spectacles, preventing light passing through the lenses. A good anti-reflective coating will manage these situations by minimising reflections. This means more light can pass through one’s lenses, optimising visual acuity which will mean fewer visual distractions while driving.


During the day, the sun’s rays as well as reflections off surfaces such as the road, other vehicles or water can also compromise your vision. Polarised lenses are the most effective lenses that will significantly reduce this glare. (Click here to read more about the benefits of, and how, polarised lenses work.)


DriveOptix™ is a product that has been speficially developed by Torga Optical to reduce the risks of driving, by optimising drivers' visual acuity.


Let’s do a simple exercise to evaluate whether or not your driving vision is up to speed: 


When was your last eye examination?

If you answered more than a year ago – then you need to get your eyes tested by a professional optometrist, sooner rather than later.


When did you last renew your driver’s licence?

Hopefully your licence is still valid. Not only do you run the risk of paying hefty fines to the traffic department, you are putting yourself and those around you on the road in potential danger.


Things to be aware of:

-          The licence department only conducts a basic visual screening of an individual’s visual ability. If you ‘pass’ this visual screening, it does not mean that your vision is not impaired. You might very well still require spectacles to improve your vision.

-          By law drivers do not require 20/20 vision to drive in South Africa. But many drivers could have this vision with the correct visual correction.

-          Improved vision can reduce the number of collisions, injuries and fatalities on our roads.

-          A comprehensive eye examination will assess all aspects of your vision, as well as the health of the eye.


Do you have the correct lens technology in your glasses to optimise your driving ability?


Lenses with poor optics will hinder rather than improve your vision and driving ability. Ensuring you have the best technology lenses will aid your vision in various situations in your everyday life, including when you drive.


Glare is the main reason for drivers’ visual discomfort. Glare is experienced in the day from the sun and its reflections off the road and various reflective surfaces (such as the road, water, other vehicles). Glare also happens in overcast conditions and at night from on-coming headlights, streetlights and other light sources.


The correct prescription in the form of Polarised sunglasses for day time and antireflective coated lenses for night time will minimise the effect of glare on one’s eyes, resulting in optimum driving vision.


Click here to make a booking online at your nearest Torga Optometrist to have a fully comprehensive (obligation-free) eye test.

The Low Down on Polarised Lenses

Are you (literally) being Blinded by the Light?

Everyone wants polarised sunnies. But why? How much about this amazing technology do you actually know?

We’ve put together the low-down so that you know why and when to don your polarised sunglasses.

Lens Comfort Technology for Over 40s

Everything you need to know about Your Vision Over 40

Monday, 4 June 2018


In a world that is obsessed with eternal youth, efficiency and massive workloads, the inevitable deterioration of one’s eye sight at a certain age - *gulp* yes, forty – is a daunting prospect for many!


The good news is that with huge strides in technology comes fantastic advances in lenses and eyewear. In addition to having a plethora of fashion frames from which to choose, lens technology has progressed to a point where the tell-tale signs of ageing eyes (read: those bifocal half-moon lenses) have, thankfully become an almost-distant memory.


The bad news is that no one (yes, sorry, no one!) escapes ageing – everyone’s eyes deteriorate with age. It’s inevitable. It will happen to you. So, if you are having difficulty focussing on that really ridiculously, tiny text on your cell phone, or if your arms just don’t seem long enough when you’re studying that sushi menu, then it’s probably time for a visit to your optometrist.


To ease the pain, we’re going to explain various eye terms and visual conditions, along with potential solutions, so that you will be empowered to make an informed decision when the need for spectacles arises.



What happens to your eyes as you get older?


As the eye ages (i.e. as one nears the age of forty), the muscles that enable the ocular lens to work become weaker. The result is that the focusing ability for near vision becomes more difficult and eventually not possible. This condition is called presbyopia. The youthful flexibility of the lens and the respective muscles allow the eye to change focus from objects that are far away to objects that are close.



Eyeglasses, including single vision reading glasses, bifocals and multifocal lenses address presbyopia very effectively.

Multifocal (also known as progressive and varifocal) lenses give you a more youthful appearance by eliminating the visible lines found in bifocal lenses and allow you to focus clearly at varying distances. A bifocal lens and single vision reading lenses don’t give you the clear vision at all distances, reading glasses have one focal point and bifocals allow for clear distance and near vision but they aren’t great for intermediate distances – such as computer work.


What the difference between presbyopia and hyperopia?


Farsightedness, or hyperopia, occurs when light focuses behind the retina instead of on it due to a shorter than average eyeball. People of any age, including babies, can be farsighted. Presbyopia, on the other hand, is an age-related condition in which the lens and muscles of the eye becomes less flexible. You can therefore be both hyperopic and presbyopic over the age of 40.


What is a multifocal lens?


Multifocal optical lenses transition from your distance prescription at the top of the lens to your reading prescription at the bottom of the lens to help you see objects at all distances after you lose the ability to naturally change the focus of your eyes due to age (presbyopia). All Torga Optical multifocal lenses are manufactured using highly sophisticated digital software and German precision lens technology.


What is the difference between a bifocal and a multifocal lens?


Like bifocal lenses, multifocal lenses enable the user to see clearly at different distance ranges through one lens. A multifocal lens (AKA progressive lens) gradually changes power from the top of the lens to the bottom, giving a smooth transition from distance vision (across the room) to intermediate vision (computer, for example) to near (reading) vision. On the other hand, a bifocal only has two main focal points - one for distance vision and one for reading. These, therefore, don’t give the wearer clear intermediate vision – so they aren’t ideal for computer users.


How does a multifocal lens work?


Instead of providing just two lens powers like bifocals (or three, like trifocals), multifocal lenses really are multi-focal lenses, providing a smooth, seamless progression of many lens powers for clear vision across the room, up close and at all distances in between. One is able to see clearly here (close up), there (middle distance) and effortlessly through to the far distance (over there).


Are multifocal lenses good for your eyes?


Yes! Multifocal lenses are often the most effective way to assist those with presbyopia. They alleviate the burden that is placed on your eyes when straining to focus at different distances.


What is the difference between single vision and multifocal lenses?


Having single vision glasses means the lenses offer just one focus for the eyes. This can be for long distances correction, for close-up reading, or for mid-range sight correction, such as for computer use. Progressive lenses, on the other hand, offer a range of vision correction within the same lens.


Are multofocal lenses the best solution?


In addition to cosmetic advantages, progressive multifocal lenses provide a more natural correction of presbyopia than bifocal or trifocal prescription lenses.


We advise that you have a in depth conversation with your optometrist about your lifestyle in addition to your visual needs (once you’ve had a full eye test). Explain to him or her when your eyes are at their most strained. Go into detail about the kind of work that you do, which digital devices you use and how often. Your hobbies and how you spend your spare time is also important to consider when finding a solution to your visual needs. It’s this kind of information together with the actual eye examination that contributes to you finding the best optical correction for your visual comfort.


Click here to make an appointment online at your nearest Torga Optical.



Always get professional advice from your optometrist.

The above article was written with professional consultation from Claire Wiggill (BOptom (UJ)).