What is a pressed three prism? What does it do?

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Children and children strabismus need early surgical correction, but for children with strabismus, because of the children of all kinds of s

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Children and children strabismus need early surgical correction, but for children with strabismus, because of the children of all kinds of strabismus examination does not cooperate, binocular vision is not balanced, after the general anesthesia surgery prone to strabismus over and under correction. We used a kind of membrane pressed three prism to treat children with small degree strabismus and strabismus after operation. The advantages of wearing a membrane pressure three prism: to protect the child's binocular vision, but also for the child after the age of surgery again for an effective binocular vision "protection period". In the past with common glass or resin three shortcomings: the prism lens is very thick, wearing only 7 in one eye for the treatment of strabismus, the scope of the treatment of strabismus is very small, membrane pressure post three prism to compensate for the lack of three glass prism. This new film three prism is imported from America, it is in a 0.5 mm thick substrate, multiple identical parallel mistress prism degree, this greatly reduces the weight and thickness of the three prism, the three prism wearing high degree possible. Because made of special plastic, so it can be pressed in ordinary glasses, unilateral treatment of strabismus degree can reach 30 delta. Thus, the treatment range of the three prism is enlarged, which provides a new method for treatment.

The new technology for the age of some small strabismus patients, by pressing the three prism transition treatment, until the child is older again when the surgery in children, so this time, binocular visual function can be well protected, at the same time because of pressing three prism correction of eye position, compensatory head disappeared the child, spine, bone development, avoid legacy of compensatory head caused by facial deformity.

The membrane pressing three prism can be used to correct strabismus. Three degrees of prism size, i.e. refractive power size, determine the size in the top corner, with the same angle of three prism refractive power of the same. The thickness of the three prism is related to the length of both sides, the longer the edge, the thicker the bottom. If the length of the two side is reduced to very small, the angle between the two sides is constant, but the thickness will be very thin. Usually only wear three glass prism 7 in one eye for treatment of strabismus. According to the shortcomings of the glass prism three, in recent years the United States invented in 0.5 mm thick substrate, multiple identical parallel mistress prism degree, thus greatly reducing the weight of the three prism, three prism thickness, causing a high degree possible.

Because made of special plastic, so you can put pressure on the lenses, the highest degree can reach 30 Taiwan glasses. The use of this range is pressed three prism in the eye will be expanded, provides a new method for the treatment of.

Pressing the three prism is very transparent, but the reflection prism still can reduce the degree of visual acuity, bigger and more obvious, the 20 delta can make the central visual acuity decreased from 1 to about 0.5. There is the phenomenon of distortion and distortion of the object, and the object has a dynamic. So it's not as good as it would be to replace the glass three prism and apply to all situations.

For some young patients with strabismus, by pressing the three prism transition treatment, until the child is older can cooperate with the operation inspection, re operation, so that children in this period of time, the binocular visual function can be well protected, at the same time because of pressing three prism correction of eye position, compensatory head disappeared. The children of the spinal column, the normal development of bones, avoid leaving the compensatory head position caused by facial deformity.

The three prism can be used to correct strabismus

In clinic, some children with strabismus due to various reasons can not accept surgical treatment of pediatric ophthalmology, doctors often give children with a pair of three prism transition treatment, but we usually use the traditional three prism has many shortcomings. For example:

1 prism thicker

2 glasses weight, the child is not easy to accept

3 the distortion caused by the prism effect of the three prism

Due to the above reasons, resulting in the use of our three prism is relatively limited. We have introduced the United States 3M company's membrane pressed three prism correction of children strabismus achieved good results. Due to the use of this kind of high quality film pressed three prism, our treatment of children with strabismus. We treated three children with strabismus by a membrane like prism:

1 strabismus after surgery

2 strabismus after operation

3 small children strabismus

4 strabismus for children who are not suitable for surgery

5 younger children, can not cooperate with the preoperative examination of various degrees of strabismus.

6 special types of strabismus (DVD. orbital wall fracture. Retraction syndrome. Smile oculomotor palsy strabismus.)

 

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