Get Polarised Sunglasses Under $69.99 in New Zealand

Polarised Sunglasses

Polarised sunglasses or anti glare lenses prevent the horizontal sun rays and reduce light glare and eyestrain. This quality makes them sun safe and they improve vision as well. To understand how anti glare lenses work, firstly we should know the working of UV rays. Sun rays are non- uniform and the sun rays which meets our eyes is scattered as it is reflected from an uneven surface i.e rock, grass and ground surface. But when these sun rays are reflected from an even and smooth surface like the surface of a calm body of water or the hood of a car, the light is reflected in one direction causing distraction which damages glare.

Fun fact – The first polarised sunglasses were made in 1936 by Edwin H. Land who experimented with lenses and uses his patented polarised lens.

Sunglasses are meant to protect against UV rays and light glare but polarized sunglasses are specifically made to obstruct intense glare while allowing only a limited amount of light to pass through them.

But what is Glare ?

Glare is excessive and intense light formed in the field of vision. It causes discomfort and reduces visibility. Older people are much more sensitive to glare due to ageing of the eye. Glare can hinder person’s vision ability to distinguish objects, though for a temporary phase of time.

Benefits of Polarised Sunglasses

When in outdoor, it completely cuts out glare proving it safe for day driving, outdoor exercise and any activity including water as it improves visibility .
It provides complete protection from UV A and UV B rays which are harmful for our eye health and can cause long term effects.
It improves clarity and can make an already beautiful natural scenery more vibrant and colorful, as any reflection is prevented by these glasses to pass through.
They can reduce eye strain to a max level. As polarised glasses can reduce unnecessary glare, it causes less fatigue which ultimately causes less to no eye strain.
Another important use of this lens can be seen in day driving. Glares from the sun reflected off surfaces can make driving hazardous, specially during sunrise and sunset. Polarised Sunglasses cut out these glare and provides more clear vision adding to your safety.

Polarised Sunglasses are useful for everyday and most of the people but here are some specific situations where it can be utilised to it’s maximum potential –

Fishing – polarised sunglasses cut out glare after sun rays reflect from a water surface. With polarised sunglasses on one can actually see into the water. Ultimately lens tint also affect fishing and your vision. Grey tinted lenses are best sunny days as the colour transmits all colours of the spectrum creating less distortion in open waters. Copper tint absorbs blue light and increases contrast making it perfect for sight fishing. Amber colour is best for low light condition maybe on an heavily overcast day. Apparently, the lens material also add in the effectiveness of the lens. Glass although expensive provides the clearest vision and is smudge proof. Polycarbonate is lightweight and impact resistant. Acrylic is moderately durable reflecting over 99% of the glare. Polarised Sunglasses works best when you look into the water at an angle and not straight down.
Snowy Environment – as polarised glasses cut down glare reflected from the snow surface, it can be useful in a snowy area. These can protect you from snow blindness aka photokeratitis during winter season. Snow blindness can cause discomfort in eye due to prolonged exposure to UV rays. Polarised Sunglasses come in handy during these rough conditions.

Buying polarised sunglasses will be a wise choice and best if you’re outdoor activities such as fishing, trekking, skiing and generally driving.