Questions1: watching TV in short distance or reading in a poor light will make injuries to eyes?

Answer: the luminance not enough for reading, or close quarters watch TV will lead to the dry eye. General speaking, the appropriate distance for reading should keep the luminance around 60 to 100 watts, try to prevent the glare or stimulating light enter into eyes, maintain the ordinary and comfortable illumination. Besides, move your eyes from screen every ten minutes and take another ten seconds for overlooks.

Questions 2 if suffer from eye fatigues, will sleep effects?

Sleep has important impact on reduce body fatigues as well as eyes fatigues ,but not effects with all people, if it is fail to improve your vision, you should take overlooks, look around and wink as many as possible. Some think, just take a overlook will reduce eyestrains, in fact, the most important to vision is not the distance of your vision but the cut down the time to apply to eyes.

Question 3: will the elder myopia wearers suffer from presbyopia?

The elder people can not avoid the presbyopia whether they have suffered from myopia or not, they just reduce their presbyopia prescription when they in short distance.

Question 4: Prescription below 300 degrees classify into mayopia or pseudomyopia ?

Pseudomuopia is the symptom which makes the eyes fail to breath, it involves in spasms caused by overexerting with eyes, it will recover after relaxing for a period of time. Myopia is the eyes problems with it’s unusual axis oculi, generally, the prescription around 300 degrees should be corrected by eyeglasses as it is belong to the myopia actually.
question5: wearing eyeglasses or contact lenses will make bad vision for eyes?

Someone suffers from vision problems but refuse to wear eyeglasses or contact lenses to correct his/her vision, they think” once wearing eyeglasses will make a long term to rely on it , the prescription also increased”  They are wrong with their viewpoints, the prescription which get from their opticians describe their current vision, prescribe suitable eyeglasses is the solution to correct their vision according to the prescription and keep eyes from worse damages.

Some people may get confused about the words “my arms are getting too short”. Actually, this complaint is quite common among individuals who are in their 40s or 50s. What does this means? The reason for this abnormal phrase is that these individuals are often bothered by a condition called presbyopia, which causes them to lose the ability to see things close to the eyes. As a result, they have to hold things such as books or newspapers at an arm’s distance because their distance vision remains untouched. A fortunate point of presbyopia is that it does not affect one’s distance vision. In this case, it is reasonable to say that the more distant the materials are held, the clearer vision the viewer will experience.

Presbyopia is an eye problem that occurs predominantly in the older folks whose eyes deteriorate as the body ages. In a certain degree, presbyopia is a condition that is inevitable when either a boy or a girl reaches middle age. It is as abnormal as gray hair. The eye’s natural lens is soft and flexible when a person is young. And a flexible lens can easily change its shape and its focus power can be easily adjusted. The normal function of the lens is called accommodation. However, the lens will gradually lose its flexibility as the person ages, leading to a decrease in the ability to accommodate. The most obvious symptom of presbyopia is the difficulty in seeing close-up objects. Print materials with tiny letters are extremely hard for presbyopic people to read.

Dealing with presbyopia, the commonest means is to wear reading glasses, which can effectively provide clear near vision, enabling the old to see materials with normal efforts. In addition, the power of reading glasses will continue to increase, in the process of on-going natural aging. And for presbyopia individuals who need frequent visual shifts between near and distance objects, bifocal eyeglasses are more suitable.

There is a kind of vision problem that mainly occurs onto people who are over forty. It is called presbyopia, an aged-related vision problem. It is found that sufferers of this problem usually have nearsightedness at the same time. And the result is the victims can not see clearly of objects either in the distance or nearby.

Presbyopia is a progressive problem. In other words, when some obvious symptoms appear, the situation becomes worsened. It proves that the lenses of sufferers become less flexible than ever before and can not react quickly and accurately as usual. Sufferers will feel less comfortable on and on as the situation worsens, and their vision declines as a result- their lives and work will be greatly affected.

Though presbyopia will bring a lot of inconvenience and troubles to sufferers, it will never threaten life. And there are some simple ways to resolve this problem. For example, it is very common and nice for victims of this problem to wear bifocal eyeglasses and lenses.

As their name shows, the vision field can be divided into two parts, namely the far vision and the near vision. Bifocals are designed in special structure- the upper part is responsible for far vision and the lower part for nearby vision.

Facts have proved that bifocal contact lenses can offer wearers much better vision effects in some cases. However, some time is needed for adaptation. But there are now still some nice lenses with very short adapting time.

Bifocals are nice alternatives for people suffering from presbyopia and other similar vision errors. But it is needed to consult with eye doctors first before buying them.

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Progression of bifocal and trifocal lenses

Common questions of bifocal contact lenses

Advantages and types of progressive lenses

Presbyopia is an age-related eye problem, especially when people are over 40; while some sayings have that the year 48 is a watershed for presbyopia. That is to say, whether one will suffer from this eye problem or not is decided in that year.

Unfortunately, some statistics have it that more and more young people are suffering from presbyopia. Especially, some suffers are around 30 only.

The reasons of presbypobia vary a lot. The foremost important reason is people’s eyes are too fatigued. Nowadays, many people have to work before computer monitors with little rest. So their eyes tend to suffer from presbyopia. Another one is people’s dieting habits. People nowadays are like to eat some finer grain and rice, and this lead to insufficient intake of some essential vitamins. Modern life styles have made people’s health very bad, and this can also influence eyes.

The pathological reason of prebysopia is the eyes of sufferers can not adjust themselves automatically. Eyes are composed of some muscles and in normal conditions, if the eye muscles are too stringed, they will self-adjust themselves quickly. However, when people get older, the elasticity of their eye muscles declines. So under such conditions, people begin to see objects in blurriness, and they suffer from prebysopia.

People of some age group are inclined to suffer from presbyopia in earlier age than others. These people have to spend very long time before computers everyday. And these who may not suffer from this eye problem are athletes, outdoor worker, etc. all who seldom use computers.

In daily lives, some sufferers of presbypobia do not wear glasses. In fact, it is essential for sufferers of presbypobia to prescribe and wear eyeglasses. Luckily, sufferers of presbypobia can choose to receive surgeries or wear contacts as they like.

Any way, it is better to prevent than cure. The best method to combat presbypobia is to prevent them. We should take more rest while we are tired or looking at something too long. Also a good dieting habit is very important. Still more, visiting eye doctors regularly is also very important.

·Presbyopia causes and treatments

·Brief introduction of presbyopia

·Differences between hyperopia and presbyopia

Most of us have heard of bifocals, but seldom of trifocals. In fact, trifocals are much nicer than bifocals in terms of vision correction.

The history tells us that presbyopia is so hard-dying that it can not be solved by ordinary eyeglasses. Luckily, trifocals are glasses that are mainly for sufferers of presbyopia. There are three lenses in trifocals; each of them is used to cope with the matter of near distance, intermediate distance and long distance respectively.

The aforesaid information can clearly explain the working mechanism of trifocals. Thus, the disadvantage of bifocals in solving this problem can also be detected from it.

In fact, there are two parts in the bottom of trifocals, each of which is responsible for the correction of near and intermediate near vision

From what have been expounded above, we can easily know that the bottom part of the glasses is for short sightedness correction.

Just above the short sightedness-correcting part is the part for intermediate vision. It is responsible for the correction of intermediate distance, which is relatively narrower than other parts.

It is, doubtless, the upper part that is responsible for distant vision-correction. Other eye problems can also be solved in this part.

Different from other eye problems, as nearsightedness and farsightedness, presbyopia is an age-related problem. People over 40 are prone to this eye disease. The cause of presbyopia is that the eye muscles are losing their elasticity. The commonest methods, except LASIK surgery, can not fundamentally solve this problem.

Aimed at the mechanism and symptoms of presbyopia, some designers have devised trifocals which are proved to be one of the most effective methods. However, trifocals are not suitable for all people who have different eye structures. These people can choose varifocals that are designed almost under the same mechanism as trifocals. Anyway, suffers of presbyopia can gain the greatest comfort by wearing trifocals or related glasses.

related article

·Presbyopia causes and treatments

·Brief introduction of presbyopia

·Presbyopic people benefit from new contact lens—-bifocal lens