![image002[3]](/images/stories/image002%5B3%5D.jpg) |
Finding a new pair of glasses usually means choosing a new frame for most of us. However, little consideration is often given to selecting the right lenses. Here at Family Eyecare, we supply lenses from all major lens suppliers as well as unbranded options to suit your budget. We recommend the best possible lenses to our customers, within range of availability and price, and we happily supply all lens types, single vision, bi-focal and varifocal lenses. |
|
Myopia (Short Sightedness) is a condition of the eye where the light that comes in does not directly focus on the retina but in front of it. This causes the image that one sees when looking at a distant object to be out of focus but in focus when looking at a close object.
Eye care professionals most commonly correct myopia through the use of corrective lenses, such as glasses or contact lenses. It may also be corrected by refractive surgery, though there are cases of associated side effects. The corrective lenses have a negative optical power (i.e. are concave) which compensates for the excessive positive diopters of the myopic eye. Myopia is partly hereditary. |
When images in the distance appear blurred yet close up images are reasonably in focus, this is known as near-sightedness and is corrected with a ‘minus’ power convex-lenses.
This occurs when the light of the image seen, appears before the retina at the
back of the eye
Without corrective lenses
With corrective lenses
|
|
|
|
|
Hyperopia (Long Sightedness) is a defect of vision caused by an imperfection in the eye (often when the eyeball is too short or the lens cannot become round enough), causing difficulty focusing on near objects, and in extreme cases causing a sufferer to be unable to focus on objects at any distance. As an object moves toward the eye, the eye must increase its optical power to keep the image in focus on the retina. If the power of the cornea and lens is insufficient, as in hyperopia, the image will appear blurred.
|
Your vision towards the distance appears reasonably in focus, however your vision on objects closed appear blurred. This is corrected with a ‘plus’ power concave lenses.
Without corrective lenses
With corrective lenses
|
|