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Yes, some sports glasses can be fitted with vari-focal lenses. However, factors such as the type of sports frame and the curvature of the frame will determine whether any particular frame is suitable for varifocals. For example, visor frames and 'wrap around' sports frames with very high curvatures cannot be fitted with varifocals. Some of the best specialist sports lenses are made by a Genram company called R&H - http://www.rh-lenses.co.uk/. Different types of lenses can be tailored to your needs, depending on the type of sport you are using the frames for.
2010-12-04 Carol Anne Stewart, Glasgow
If your axis reads 5.0. this means 5 degrees. On the order form, select 5.0 from the dropdown menu. Be sure to make sure the sign (+ or -) on your Sphere (Sph) and Cylinder (Cyl) are correct. If there is no sign before the number (or above the number when written by hand by some optomoterists), this is a + number. If there is a minus associated with the number, then this is a negative number. For example, if the prescription (Rx) is 2.50/-1.25 x 135 The 1st number (Sph) is +2.50 The 2nd number (Cyl) is -1.25 The 3rd number (axit) is 135 degrees
2010-12-04 Craig Spencer Boulte, Chorley
The standard lenses are made of plastic and have a 'refractive index' of 1.5. This is a measure of the 'light bending' power of the material. The higher the refractive index, the more powerful the light bending effect is of the lens. Thus, lenses with higher refractive indexes can be thinner and lighter than standard lenses. For your prescription, we would recommend a 1.6 thin lens or a 1.67 very thin lens if you would like it to be as light as possible. A 1.74 lens would be slightly lighter still, but you are unlikely to notice any advantage over the 1.67 lens, and so it is un-necessary expense for you. If you are choosing a rimless or half frame, then the 1.67 lens will have the thinnest looking edge and so will look better. If you have a full frame, then the 1.6 lens will suffice in terms of looks as the edge will be hidden. However, the 1.67 lens will be noticeably thinner. Our 1.67 lenses are superbly priced and likely tosave you well over £100 compared to the SAME lens in the high street.
2009-09-06 ,
It really depends on a number of factors. Reasonable leveles of astigmatism can be treated with laser if associated with significant refractive error and symptoms. However, very high degrees of astigmatism, coupled with some other factors that may be in play, may preclude laser treatment. You should see an Ophthalmologist experienced in laser refractive and corneal surgery for further information.
2009-09-06 Jake Fagan, Finchley
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