Single Vision Distance lenses
Single vision distance lenses are used to focusing on everyday long distance objects (meaning further than arms length). Younger people start off with just one pair of glasses with single vision distance lenses to focus on everything, even near objects, and only need one pair of glasses. As we get older our
prescription tends to change, and we now find separate glasses are needed for focusing on near objects which are made to a stronger prescription than our distance lens glasses. Our distance glasses become no use for focusing on near objects at some point. This generally happens as we get to around 40 years old on average. This is why in our later years we may need to own two separate pairs of glasses.
Single vision Reading Lenses
Single vision reading lenses are used to focus on near objects (meaning as far as your just a little nearer than arms length.
Generally we don't need reading glasses until we reach averagely 40 years old or so. We start to notice that we can't focus as well as we once could when reading and looking at very close objects.
Glasses made for near focus like reading benefit and give clarity for reading and near focus but may well hinder and blur focus on distance objects further than at arms length and be awful for focusing at long distance as they are to strong for this purpose. You must not use reading glasses to drive in for example as this would be very dangerous.
Varifocal lenses or Multi-Focals are used mostly by people over 40 years old.These lenses are used when we need two pairs of single vision glasses, one distance, one reading focus. Sometimes this is quiet convenient to do, and some people have problems adjusting to Varifocal lenses. If you are happy with two pairs of single vision glasses and it's not to much trouble to change from one pair to the other when need then this is the best option. Some people find it troublesome to keep remembering to swap the glasses over for the right pair to do the right job, and prefer a Varifocal lens in their glasses. Firstly this is more convenient, no swapping glasses over, just the need for the one pair. Secondly, they tend to get used to just one pair, and find that because they grade from top to bottom in strength, the get a middle section in just the right place to focus on mid range objects, in between near and far objects, like the computer for example.
Varifocals tend to have a small distortion zone on the outer edges due to how they are made, this is a side effect that most people adjust and get used too. There are different designs and qualities of varifocal. The better the quality the wider the band of vision from side to side you can see through before any blur comes into your periferal vision.
Coatings and extra features
Lenses can have a variety of special coatings applied to them to enhance the wearers experience
Glare resistant coatings
These coatings generally give a very slight green glint to the lens,not particularly noticeable. Advantages cosmetically are that the wearers lenses are difficult to see in terms of light reflecting back from them, so the wearers eyes are more visible, and thicker lenses tend to not be so noticeable. Effectively the Glare resistance gives the wearer less glare in strong light, when using a computer or tech device, and when driving especially at night (protecting against headlight glare). This additional coating is very effective in reducing eye strain and tired eye headaches.
We supply these in two colours, Brown and Grey. The coating applied to the plastic lenses will react to different light conditions and change from very very mild tint to just below a sunglasses tint depending on the uv and light levels. These lenses will be at there lightest colour (if any) at night when the light and uv are at their lowest.
Polarised lenses are always very dark, like sunglasses. These work differently to sunglasses though, and expertly filter most of the glare that exists out. Water and Snow tend to bounce glare off the most and the wearer of polarised lenses will notice the superior effects of filtering out glare when compared to a usual tint
Tinted Lenses (static)
We supply Brown and Grey tints online. These tints do not change but remain permanently and will not ware off.
Grade 1 is 15% slight hint.
Grade 3 is 30% mid tint
Grade 5 is a full sunglasses 85% tint with a UV coating to protect your eyes.