How to choose the right glasses?

 Some one-sided view that has had myopia, you do not pay attention to eye health, do not need to protect the eyes. In fact, this view is not correct. Some people think that myopia is a small fault, whatever the store to buy one or use other people’s glasses, which are very prudent, with the result that their myopia deeper vision is getting worse.
Glasses make good “five tests”
According to Beijing, Shanghai and other surveys, school-age children up to 80% failure rate of glasses over glasses inappropriate for many children has resulted in a further decline in visual acuity. To let the children accompanied by a qualified glasses, parents choose the regular optical shop in addition, it also must have the following “five tests”:
Dilated Off: degree in optometry before scheduled use of atropine 1% -4% eye ointment or eye drops mydriatic. The purpose of dilation is to increase the degree of hyperopia, myopia degree of reduction, to identify true and false myopia. Because school-age children within the eye accommodation in an exceptionally strong, only to make use of mydriatic optometry degree accurate.
Optometry retinoscopy off: optometry ideal way is to do in the darkroom manual retinoscopy, because the accuracy of this method is strong. Insert method, younger, poor response to child feel ineffective. The computer optometry errors.
Casting off: the optometry degree as the base after the children tried on glasses, so that the child be consistent with the principles of good vision. Such as short-sighted vision to take the best minimum degree; hyperopia more complex in the regulation of the ramp and low vision to take the highest degree of good eyesight, no complications of hyperopic eye may be the best degree to take. Here, in particular, should do is this: to adjust the child to wear glasses degrees for 10-15 minutes to see if there are headaches, dizziness, sensory and visual materials such as whether the abnormal tilt.
Select Frame off: selecting a suitable frame to pay attention to two aspects: First, the two parents selected frames with the distance between the lens center of the pupil measured by heart doctors from the match. The second is to note that frames not be too big too heavy.
Corrected visual acuity Off: Parents must understand After casting visual acuity measured how much, and take to heart. If corrected visual acuity to 1.0 or more, only the glasses on the line, one year after the re-optometry. If the visual acuity less than 0.9, indicating with amblyopia, an ophthalmologist should pay close attention to find treatment. For preschool and school-age children 70% of refractive errors is hyperopia, most of which have low vision. The treatment of amblyopia in the 8-year-old best to re-treatment for 10-12 years of age is poor.
How myopic glasses
We know that myopia anteroposterior diameter of the eye longer than normal eye, if placed in front of a myopic eye moderate concave lens, and then make parallel light scattered into the eyes, the focus in the formation of the retina, so far Department of objects can see it clearly.
And with what degree of the glasses right? This should be decided according to the degree of myopia, in principle, the best visual acuity is the minimum degree as the standard. For example, a person wearing the lens diopter of myopia 1,1.5,2, vision can reach 1.0, then 1 should be optional diopter lenses (commonly known as 100 degrees of myopia), and not wearing a 2 diopter lens. If you choose the degree is too large, to see near objects need to force the eyes to adjust, ciliary muscle fatigue, but may be close to work or reading of eye symptoms.
In addition, young people suffering from myopia, be sure to cycloplegic refraction glasses, such as the Houma Tuo products with 2% or 1% atropine eye drops (under the age of 12 must use atropine eye drops) mydriatic that ciliary complete paralysis, so as to check out the exact degree to. Some young people do not want to cycloplegic refraction, fear of the eye after dilation uncomfortable, not see things near. In fact, this drug is only temporary. Conversely, if not dilated optometry, the ciliary muscle, the regulating role of the lens, the degree will be found to be inaccurate. Therefore, young people must be dilated when myopia optometry optometry, so as to choose to suit their glasses.
Myth: The more wear glasses deeper
Some people, after wearing the wrong glasses, causing the degree to deepen, many patients with myopia raised a similar question: Is it more wear glasses deeper degree. In fact, the degree of myopia will not only deepen, but also to correct vision, the purpose of treatment of eye disease.
1, the glasses can correct vision. Myopia because of the distance light can not focus on the retina, causing distant objects as unclear, while wearing a myopic lens, you can get clear in the objects, so that vision can be corrected.
2, as the myopia can reduce fatigue. Myopia without wearing glasses, glasses will inevitably lead to easy fatigue, the result can only be deepened to promote degrees. Normal after wearing glasses, as the fatigue phenomenon would be greatly reduced.
3, oblique myopia can be prevented. Near vision myopia, the eye of the regulation weakened, over time the role of the extraocular rectus muscle more than the rectus, external oblique can cause eye position. Of course, myopia with oblique, can still myopia correction.
4, myopia can be prevented exophthalmos. Young people still in the development of the eye, regulating the development of myopia easy axis of myopia. Especially high myopia, eye diameter was significantly prolonged before and after, the appearance of the performance of proptosis, if the normal start wearing glasses myopia corrected, this situation will be alleviated, or even can not occur.
5, myopia can prevent amblyopia. High myopia and no time wearing glasses, often resulting in amblyopia, as long as the right to wear glasses, a long-time treatment, most vision will gradually improve.
6, myopia lens for high myopia caused by complications such as retinal detachment, vitreous opacities, cataract, glaucoma, nystagmus, etc., have some role in prevention.
Therefore, the myopic patients should choose a regular optical shop, as long as the glasses with the appropriate experience, often wearing, and pay attention to the daily visual health, myopia to be stable or even reduced.

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