Posts Tagged ‘presbyopia’

What to Do If We Have Presbyopia and Other Near-vision Problems Simultaneously?

March 29th, 2010

Eye is such one of the most important organs for our human beings that we should care it a lot. However, each of us will get old as time goes on. And some unavoidable eye problems may occur as a result. For example, presbyopia is an eye problem that often strikes people who are over forty. And for some of us who have nearsighted or astigmatism, etc. they may suffer a lot when they are over forty.

Luckily, there are two methods to tackle such condition- wearing glasses and receiving surgery.

In fact, ordinary glasses are useless in solving those eye problems. And one of the best alternatives is bifocal lens. In fact, bifocal lenses are also called bifocal lenses Benjamin Franklin. This is because Bifocal lens history is firmly connected with him.  Almost two and a half centuries have passed and many innovations are made on it since bifocal lens was created by Benjamin Franklin. Bifocals are some of the most widely used reading glasses for many aged people or people of other age group.  Most of such lenses are lined, for they are combined by two different cut lenses. And now, there are some no-lined bifocal lenses, also called progressive bifocals. Those lenses are much advanced than conventional bifocals, for there is no radical vision change. Wearers will feel no lenses on their face, as those lenses can provide natural vision. Therefore, most people tend to wear progressive bifocals. And Facts have proved that many people have had their eye problems solved by wearing bifocals, be conventional bifocal lenses or progressive bifocals.

Or in some other cases, like the problems are very serious or the patients do not want to wear glasses, eye surgeries are better alternatives. Among all those eye surgeries, receiving bifocal lens implant is rather good. During this process, only some small incision will be made and patients will not suffer from any great pain. After the surgery, patient will find that they have new eyes, for their eye problems are cured successfully. However, surgery will cost much than ordinary methods.

Keep in mind, we should consult with our eye doctors, no matter which method we choose. If we can do as our doctors suggest, we can get very good results in solving those horrible eye problems.

Brief introduction of presbyopia

December 7th, 2009

The origin of the word “presbyopia” is two Greek words “presbys” and “opia”, which mean “old man” and “eye”, respectively. So presbyopia is also called elder eye, and it is an eye problem where the eyes are not able to focus on near objects. For examples, people have difficulty in reading newspapers or other fine print, especially in low light condition. Presbyopia is a symptom caused by the natural course of aging, and it is very common among elders. Presbyopia usually first occurred between the ages of 40 to 50. The mechanisms of presbyopia have not been known exactly. It may be caused by a loss of elasticity of the crystalline lens or the changes in the lens’s curvature from continual growth and loss of power of the ciliary muscles.

Similar to another kind of eye problem called myopia (nearsightedness), presbyopia can be corrected by eye glasses or contact lenses. Because it is considered as a part of the human aging process, just like grey hair or death, presbyopia is not routinely curable. However, people with presbyopia can choose surgical procedures, including IOLs.

Presbyopia is the opposite condition of myopia. So people with myopia are usually able to read without eyeglasses or contact lenses even after age 40, although their nearsightedness may not disappear. This is the payoff of nearsightedness. Due to the disadvantage of being presbyopic after age of 40, refractive surgery for correcting myopia are not suggested. Because people with refractive surgery may become presbyopia, and they need to use glasses for reading.

Differences between hyperopia and presbyopia

December 6th, 2009

Hyperopia is also known as farsightedness or farsighted eye. It is the opposite eye condition of myopia or nearsightedness. Hyperopia is a defect of vision that has difficulty in focusing on near objects that can see distance objects, or in an extreme situation cause a patient to be unable to focus on object at any distance. When the eyeball of the farsighted patient is too short or when the power of the cornea and lens is insufficient that the lens of the eye cannot become round enough, farsightedness or farsighted eye appears, and the vision will be blurred. People with hyperopia or farsightedness can also suffer ashthenopia, amblyopia, strabismus, accommodative dysfunction and binocular dysfunction.

Hyperopia is often confused with another kind of eye disease — presbyopia, which is also referred to as farsightedness or farsighted eye, since presbyopia just like hyperopia can’t focus on near objects. Their causes are totally different, although their signals may very similar. The causes of hyperopia are typically genetic and involve the eye structure. When the causes of presbyopia are related with a reduced accommodative amplitude by natural aging changes with the crystalline lens.

Hyperopia or farsightedness can be corrected by convex lenses in eyeglasses or contact lenses, which should be provide by an eye doctor (such as ophthalmologists, optometrists, or orthoptists) or opticians, after an eye examination. A few amounts of hyperopia may be left uncorrected. In other conditions, if eyeglasses or contact lenses are not favorable by the patient with farsighted eyes, refractive surgery procedures may be carried out for correcting farsightedness.

Brief Introduction of Folding Specs

November 19th, 2009

Many people, especially old people, need reading glasses to improve their vision when objects are close to their eyes because their eyes lose the ability of focusing on close objects which is usually a natural result of aging. We call this condition of eyes presbyopia. The opposite condition of presbyopia is called myopia or shortsightedness, which afflict more than half of the population. People with myopia also need glasses to improve their vision when objects are not that close to their eyes.

Fortunately both of the eye problems are not serious impairments. It is good news that people with presbyopia will never have the problem of nearsightedness, which means they will have no problem in seeing objects that are far from your eyes. Then will only have problem in focusing on things that is close to their eyes. Therefore people with presbyopia need glasses to read a newspaper, or they need to put the newspaper in a bit far place to read them if the characters is big enough to see.

If you are one of patient with presbyopia, you need of a pair of specs. There are three kinds of reading glasses, corrective lenses, progressive lenses and multifocals. Corrective lenses can totally fixed your vision power measured in diopoters. And multifocals have two or three levels of horizontal viewing region for different situations, from near objects, intermediate objects to far objects.

Besides, reading glasses can be full frames and half frames. The traditional full frames are commonly used by people who need to look at close thing for a long time, when half frames is preferred by patients who have to look at far objects as well.

Folding specs are very popular and very convenient. Any types of reading glasses that mentioned above can be foldable. You can use it according to your requirements and fold it and put it in its box that is usually small enough to be easily put into your purse or handbag. Besides, these boxes are usually in number of colors that makes them more fashionable and polymer coating are used so that the specs are quite sturdy and you don’t worry about breaking them.

Aging Vision Problems and Solutions

November 17th, 2009

As we know, for aging people, they usually put the books or photos at their arm’s length when reading and watching, but at regular distance, they cannot see. Maybe you think it is a strange phenomenon. Actually, it is caused by an eyesight problem named presbyopia. It is researched when people are at the age of 40 they are likely to be bothered by presbyopia. There are several solutions to deal with this eyesight problem, and wearing reading glasses is the most widely used way for people worldwide. The following will give an introduction about presbyopia and reading glasses.

It is known that presbyopia is mainly caused by the aging. That is because in our eyes, there is a circular muscle, which enables us to see things at different distances by changing shape, expanding and contracting the focusing power. When we are young, this muscle is very flexible. And when we are getting old, this muscle loses the flexibility day by day. So the power to focus is not strong any more. As a result, we can not focus on the things near us, but in a certain distance.

For the solutions to deal with presbyopia, nowadays there are mainly the following three means. First, surgery, like Lasik, which involves the reshaping your cornea, but some patients still need to wear reading glasses after surgery. And the frustrating point is for some people, they may still need to wear reading glasses after surgery. Second solution is lens implant. But for this, people may suffer more serious risks, like inflammation, inflection, glaucoma and bleeding. So people should be careful to take this measure. And for most people, they prefer wearing reading glasses. Reading glass can help you away from the pain of surgery and risks from lens implant. Just wearing a pair of reading glasses can do it.

Is it difficult to select reading glasses? You may want to raise this question. Don’t worry! It is very easy. And even if you don’t have a prescription, you can also select your reading glasses. If you want to purchase high quality but lower price pair of reading glasses, it is recommended to try some online shops. They usually have a full range of glasses with lower price and better service. But for reading glasses wearer, it is better to consult your eye doctor at a regular time, as we need to test if we have other serious eye sight problem in time, or listen to our eye doctor’s advice.