Here at ideal eyewear we look forward to the summer season as a time to spend outdoors with our families and as opticians we believe that everyone should own a pair of quality polarised glasses or sunglasses.
We’ve all experienced glare in our daily lives… perhaps spending the day at the beachor by a pool, driving in a car with the sun reflecting off the dashboard, roadway or bonnet or on a boat with the sun illuminating the surface of the water,
Usually, this glare is annoying and uncomfortable on the eyes, but when the angle of reflection is just right, the glare can become blinding and possibly dangerous, as in the case of driving a vehicle. Polarised lenses do what no other lens or lens treatment can – block blinding glare.
In addition, polarised lenses can enhance visual acuity, colour contrast and visual comfort, and block 100% of harmful UVA and UVB light.
Indeed, outdoor enthusiasts such as cyclists, golfers and walkers all stand to benefit hugely from the unique qualities of polarised glass, which improves safety, enhances the outdoor experience and optimises performance. In addition, the filter is useful for drivers, as it blocks blinding glare from the road’s surface.
So how do polarised lenses work?
When light bounces off an object, its waves scatter in all directions, but when light hits a reflective surface – such as water, snow, roads or windows – it becomes ‘polarised’. This means the light goes from being scattered in all directions to travelling in a more uniform direction – generating glare. Glare that can be blinding.
Polarised glass works by blocking 50% of rays passing through the lens, dramatically reducing the impact of this intense reflected light. Each lens is coated with thousands of rows of tiny iodine crystals or dichroic dyes that block out horizontal polarised light waves and allow only vertically angled light to pass through which eliminates glare. Be aware that your shades could protect you from smart-phone addiction, as polarised lenses are known to reduce visibility of images displayed on LCD or LED screens, although I have to confess they actually help me read an i-pad in the sunshine!
In appearance polarised sunglasses look no different from normal shades, but when you’re thinking about polarised sunglasses vs normal sunglasses, it’s important to note some key differences –
• Normal tinted sunglasses reduce brightness and block uv, but don’t be fooled by the darkness of the lens – this doesn’t accurately indicate their ability to reduce glare. Only polarised lenses can block out dangerous, blinding glare.
• By neutralising glare, polarised lenses for sunglasses stop you squinting when enjoying your outdoor pursuits, reducing eyestrain and enabling you to see more clearly.
Perfect for a family outing to the beach, driving on a sunny day, or cruising on a boat, polarised lenses for sunglasses optimise your visual experience in the great outdoors.
At ideal eyewear we like to keep your vision in focus, which is why we recommend that you opt for polarised lenses.. If you’re interested in getting polarised lenses fitted in your next pair of sunnies, simply pop into the practice and I will be more than happy to show you the difference between ordinary sunnies and polarised.