We all want our eyes to be perfect. Healthy eyes means healthy vision. But, like all parts of our bodies, there are many medical complaints that can develop that can affect our eyes and vision directly. There are other conditions that become identifiable through eye testing - such as diabetes. Some eye complaints have specific causes, but other conditions arise as part of the natural ageing process. Many of these conditions are treatable, and there are lots of preventative measures you can take to ensure the health of your eyes.
Regular examinations are important throughout life, whether you are experiencing problems with your eyesight or not. Your optometrist will test your vision and, if necessary, prescribe glasses or contact lenses. They will also check closely for any early signs of long-term eye disease or other medical conditions.
The most common problems most people encounter with their eyes are Myopia (Short-sightedness) and Hyperopia (Far-sightedness).
Short-sightedness, also known as Myopia, occurs when the focus of the natural crystalline lens of the eye is such that the image of an up close object being viewed falls short of the retina. All that the retina picks up is a blurred image. This can be easily corrected with concave lenses (sometimes called diverging lenses) with a negative prescription. Such glasses are often referred to as reading glasses as they help one to focus on objects up close and are most often used as a visual aid when reading. When viewing over larger distances, the angle of visible light being refracted onto the retina is usually longer, meaning that distance viewing is not always affected. These lenses make for glasses that are usually worn indoors when reading or watching television as they can blur your distance vision. This type of lens can be added into distance vision lenses as either bifocal or varifocal lenses.
Hyperopia - or long-sightedness - is the opposite of Myopia. It occurs when the focal length of the crystalline lens is too long for the image being viewed to be projected onto the retina - the angle of the light refracted through the lens would mean that the most clear focus would occur behind the retina. The result is the same; the object being viewed would appear blurred and unclear. This can be corrected with prescribed convex lenses (converging lenses) with a positive prescription, for a pair of distance glasses. These glasses are those worn by most people when out and about in their daily lives; at work or shopping and so on, and do not usually affect near vision unless your prescription also requires near vision glasses. At Lichfield Street Opticians we will be able to advise you on what lenses would be best for you.
There are many other conditions that can affect your vision. Let us take a look at some of the other more common eye complaints and explain what they are, how they affect your vision and what can be done to treat them. Click through the list below to see more information on the following: