Posts Tagged ‘optical-optometrist’
What is Presbyopia?
Presbyopia (commonly known as farsightedness) is the result of a gradual loss of the ability of the eye to focus on the retina and produce a sharp image of objects that are near (accommodation). With increasing age, progressively decreases the amplitude of accommodation.
This process occurs since adolescence, when we have greater amplitude of accommodation. When the amplitude of accommodation decreases to be only 4 diopters, we began to notice difficulty seeing at a distance clear next. This phenomenon we call presbyopia.
What causes presbyopia and how is it produced?
The capacity of accommodation that has the eye depends on the correct functioning of some structures: the lens, ciliary body and ciliary muscle. When we look at a nearby object, there is a blurring of the image on the retina.
The perception of this blur stimulation triggers nerves the ciliary muscle, which is activated causing an increase in the curvature of the lens through the ciliary body. Over the years, changes in the lens that reduce their ability to change shape, preventing the proper approach rather than the perceived blur and produce nerve stimulation.
When suspicion of presbyopia?
We suspect the existence of presbyopia if after a certain age, usually 35-40 years but may be somewhat earlier or later, it is necessary to avert the reading or sewing beyond what we wont. This retreat is generally produced by stretching the arms, which has the effect that we see more distinct points of the text or the threads of the seam.
It also suspicious of the need to bring presbyopia reading or sewing a light source, with the same effect of sharpening the distance. If you do two exercises (stretching his arms and bringing to light), the effects can join.
How to know or confirm the presence of presbyopia?
Provided that upon reaching a certain age (from 30-35 years depending on the latitude) is having difficulty seeing near objects crisp can be suspicious of presbyopia. Sometimes people are not aware of their impaired vision, which can be avoided away from the task (stretching his arms), increasing the illumination or failing to read or sew with the excuse that every time they like least.
If these difficulties are presented too early (before age 30-35 years) there may be added as another visual problem farsightedness or astigmatism.
How do I fix presbyopia?
As mentioned above, presbyopia is inevitable and has no solution. What it does have solution is the result of presbyopia, which are the difficulties named above and their future consequences, which will detail later. Whatever time it is presented visually impaired, you should consult an eye specialist.
If it’s a little early to be presbyopia, the specialist will determine the cause of the difficulties, which may be another visual problem (farsightedness and / or astigmatism) or, more rarely, a pathological problem. Whenever you find out that it is authentic presbyopia, the solution to the inconvenience and difficulties through the use of addition lenses, which restored the amplitude of accommodation necessary and sufficient to allow close-up tasks comfortably.
What consequences can have presbyopia?
If there is no remedy for presbyopia by addition lenses when they appear the first difficulties, and are continuing work closely, there is an excess of ciliary muscle effort to get clear view. This extra effort can cause immediate discomfort (such as double vision, headache, burning eyes and heavy eye itching, and drowsiness), and complications in the future (including difficulties with binocular vision and rejection addition lenses when he finally decide to use).
Can you avoid presbyopia?
Presbyopia is inevitable. Sooner or later all the people who reach a certain age to suffer. The age of onset of presbyopia is variable and depends on each individual: it has been found between 29 and 50 years. Many people start getting it at 40, some before, most are presbyopic at 45-all after 50 years.
When should I see a specialist?
We emphasize that although we can not avoid or solve presbyopia, we can avoid its consequences. This requires consultation with the specialist as soon as we know it, or we do note, the first symptoms or signs of the problem. The sooner you see this problem before the media will be made for treatment, and the better the response to therapy, with fewer difficulties in adjusting to the media.
What is the most appropriate specialist?
Presbyopia is a physiological problem that occurs naturally and as such is not an illness not usually associated with any disease. For this reason, in principle there is no need to consult an eye doctor when the first symptoms and signs.
The optical-optometrist is a university-educated professional who is trained to deal with optical media the effects of presbyopia. An important part of this training is devoted to mastering the adaptation of all types of optical media to improve vision of people of all ages. In any case, the optical-optometrist is also trained to detect pathological problems, having the obligation in this case to send the patient to the doctor-ophthalmologist.
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