The procedure is generally painless. Complete and permanent resolution of the refractive error is possible in a number of people. Others have a significant improvement even though perfect vision is not achieved and glasses or contact lenses may still be needed. A small number of people develop complications.
Some develop hazy vision, a problem with night vision, or problems with bright light haloes in their peripheral edge vision. Many private companies advertise laser eye surgery. Before embarking upon this type of treatment you should do some research. You only have one pair of eyes and you need to find the best treatment for you. This may not be the cheapest. Try to go with personal recommendations, preferably a recommendation by an NHS eye surgeon ophthalmologist.
It is important that you know your facts - the failure rate, the risk of complications, level of aftercare and what the procedure involves, before submitting yourself to an irreversible, costly treatment. Several types of laser surgery have been developed. They are all similar, typically taking about ten minutes per eye and aiming to reshape the cornea by using the laser to remove a very thin layer of corneal tissue.
The reshaping of the cornea allows the refraction of the eye to be corrected. Side-effects of all laser surgery may include blurred vision, over-correction or under-correction of short sight, eye infection and dry eyes. Other techniques There are other surgical methods available to correct short sight - most are variants of laser surgery. Implantable contact lenses refractive lens exchange and corneal grafts are options in very severe or specialised cases of myopia.
People at high risk of sight problems need more frequent eyesight checks. If you have diabetes , raised pressure in the eye glaucoma , macular degeneration , or a family history of these conditions, you should check to see what your optician recommends about regular check-ups. If you fall into a high-risk group, you should have at least a two-yearly biennial eye examination if you are over 50 years of age and a yearly annual one if you are over 60 years of age.
If you have more than one risk factor then an eyesight check is recommended at least every three years once you reach 40 years of age. Low-risk people with no symptoms of an eyesight problem do not need to have their eyes tested so frequently. If you fall in this group and are aged between 19 and 40 years, an eye test is needed every 10 years. Between the ages of 41 and 55 years, it is recommended that you see an optician five-yearly. At any age between 56 and 65 years, two-yearly checks are needed, dropping to annual checks in low-risk people who are aged 65 years or more.
Cochrane Database Syst Rev. Standards for laser refractive surgery ; Royal College of Ophthalmologists May Woke up with a black spot in left eye in center of vision. Week later right eye became fuzzy all over. Disclaimer: This article is for information only and should not be used for the diagnosis or treatment of medical conditions. Egton Medical Information Systems Limited has used all reasonable care in compiling the information but make no warranty as to its accuracy.
Consult a doctor or other health care professional for diagnosis and treatment of medical conditions. For details see our conditions. In this article What is a refractive error?
What is short sight myopia? What causes short sight myopia? What are the symptoms of short sight myopia? Are there any complications with short sight myopia? What is the treatment for short sight myopia? How often do I need an eyesight test? Short Sight Myopia In this article What is a refractive error?
What is a refractive error? Eye cross-section. Refractive errors were traditionally corrected with glasses and contacts. However, for permanent vision correction and freedom from the hassles of glasses and contacts, laser eye surgery is an excellent option. Short Sightedness Short sightedness — also known as myopia or near sightedness — makes it difficult to focus on objects in the distance. Many people confuse short sightedness with long sightedness.
Short sightedness does not affect your close-up vision, but it does affect your ability to see objects further away properly. Make an appointment Request an appointment online, phone us on 99 or email us at enquiries eyeinstitute. Symptoms If objects in the distance appear blurry, it could be a sign that you suffer from short sightedness.
Watch video. Causes To understand short sightedness, it first helps to understand how the eye works. This can happen when: The eyeball is longer than normal The cornea is more curved than normal When any of these imperfections occur, it changes the focusing point of the eye so that light rays focus in front of your retina, instead of on it.
Treatment People with short sightedness generally have good vision aside from the refractive error. Just take a look around you and you will see what he means. Such insights are hopefully not just of academic importance, since they could eventually direct us to new treatments.
Luu, for instance, is hoping to put together a trial that offers blue lamps to short-sighted children. Flitcroft points out that there are promising trials of contact lenses that can reduce blur in the peripheral vision. He is also optimistic that an eye drop, called atropine, could be helpful. The drug has long been known to slow down the signalling that triggers eyeball growth and short-sightedness. Its unwelcome side-effects — such as causing pupil dilation and generating halos around sources of light — meant that it was once dismissed, but a chance finding recently showed that it is equally effective at a just one hundredth the original dose.
At those levels, the side effects should be minimal — a discovery that has now sparked renewed interest in the eye drops. For the time being, Flitcroft stresses that we should be careful not to take any action in haste. One misconception, for instance, is that glasses themselves make your eyes worse , but the evidence suggests this advice should be discarded. For those who would like to take action now, most of the researchers agree that encouraging children to play outside can do no harm, and a trial in Taiwanese schools has already shown moderate success.
Today, I wear contact lenses that almost completely correct my vision, and the occasional dryness and irritation are small concerns in the grand scheme of things. In Depth Biology. Why are we short-sighted? Share using Email. By David Robson 16th January Myopia is among our most common complaints — but have we fundamentally misunderstood its origins and its treatment?
0コメント