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花眼和远视虽然都采用凸透镜矫正各自的屈光状态,但从两者的发生机理来看不是一回事。 远视可发现于任何年龄。婴儿出生后眼睛多为高度远视状态,其正常的视觉功能是在出生后才逐渐发育成熟的。出生一个月的新生儿仅有光感视力;5个月才能看清近物轮廓;一周岁左右方能看清一般物休。眼球随年令发育增大,前后径也随之延长,视力不断提高,9周岁则发育到正常大小,20岁左右完全定型,其中有一部分人的眼睛并不发育成正视眼而停留为远视状态。来自外界的平行光线不能在远视眼视网膜上聚成焦点,而聚焦于视网膜的后方。较大度数的远视即使应用了眼睛的全部调
Although the use of convex lenses and farsightedness correction of their respective refractive state, but the mechanism of occurrence of both is not the same thing. Hyperopia can be found at any age. After the birth of the baby mostly hyperopic hyperopia state, its normal visual function is to gradually mature after birth. One month old newborn only light perception of vision; 5 months to see the near object profile; one year old or so can see the general object Hugh. Eyes grow with age, the anteroposterior diameter also will be followed by continuous improvement of visual acuity, 9-year-old to the normal size, fully stereotyped about 20 years of age, some of whom do not develop into the eyes and eyes remain as hyperopia . The parallel rays from the outside world can not focus on the retina of the far-sighted eye and focus on the back of the retina. Larger number of hyperopia even if the application of all the eye tone