Eye Test Disposable Contact Lenses Newport      If you have any questions or concerns about your sight the first person to see is a qualified optometrist. They will be able to conduct a sight test to see if your sight requires correction and an eye examination to check its general health. It is generally recommended that you have a sight test and examination at least every two years. Short sightedness (myopia) If you are short sighted, you'll find that reading and close work is not usually a problem but that your distance vision is blurred. This happens because the lens in your eye focuses the image in front of the retina (the light receptor at the back of the eye). Minus power lenses (lenses that are thinner at the centre and thicker at the edge) will correct the problem very easily. If you have a higher prescription, you will find special high index lenses will make your lenses thinner, lighter and flatter than conventional lenses. Long sightedness (hypermetropia) If you are long sighted, you'll find that your distance vision is not usually a problem but focusing on close work is difficult and generally blurred. This often shows itself with headaches caused by your eyes struggling to focus close up. This happens because the lens in your eye focuses the image behind the retina (the light receptor at the back of the eye). Plus power lenses (lenses that are thicker and at the centre and thinner at the edge) will correct the problem very easily. High index lenses will make your lenses thinner, lighter and flatter than conventional lenses. Astigmatism Astigmatism is usually caused by an irregularity in the shape of the eyeball (if shaped slightly like a rugby ball rather than a football) or the eyes own lens (the crystalline lens). A special toric lens corrects the problem. Why does our eyesight naturally deteriorate as we age? This is a perfectly natural and very common eye condition which we first notice when doing close work or quickly looking from one distance to another. Finding yourself reading the newspaper at arm's length is often a sign that your eyes require a little help, sooner rather than later. Presbyopia is simply a gradual loss of flexibility in the lens inside the eye. When we are young the lens is exceptionally flexible, letting us change focus instantly without strain. As we grow older, it loses elasticity and we start to find it harder to focus. The first person you should see whenever you're concerned about your vision is a registered optometrist. They can give you an eye examination and explain what's happening to your eyes, then advise you on the range of lenses and frames available to improve your vision. Varilux® Lenses the best solution for you Varilux, the original varifocal lens, have three main focal areas blended into one, so you get effortless sharp vision at every distance from near to far and in-between. With single vision Lenses everything beyond the reading area is blurred so you have to switch spectacles or peer over your reading glasses to see distant objects. With bifocal lenses although near and distant vision is clear, the area between is blurred and there is an unflattering line across your lenses. With Varilux lenses you have sharp vision at all distances so you look and feel far more natural.