Some people when choose the spouse, worries the spousal nearsightedness, whether to implicate the child. This is the nearsightedness which the people cared whether can inherit question.This must mention from nearsightedness's type. The nearsightedness may be divided two kinds, namely highly nearsightedness and ordinary nearsightedness. Ordinary nearsightedness, also calls the retinitis simplex nearsightedness, may ed hardy sunglasses from the child time morbidity, namely very little progress to 20 year old of later, wears the eyeglasses later the vision to be possible to rectify normally, nearsightedness Number of degree generally below 600 degrees. Highly nearsightedness, also the name carries on the nearsightedness, is with the retinitis simplex shortsighted completely different other one kind of ophthalmopathy, the patient along with the age growth, the eye longitudinal axis lengthens unceasingly, behind the eyeball expands, is accompanied by the eyeground vein retina's degeneration Will melt, wears the eyeglasses later the vision also with difficulty to rectify normally, vision by ashamed decrease, down to will have the serious barrier.

From ophthalmopathy's survey result analysis, has the shortsighted family history family member, has nearsightedness's ratio compared to not to have the shortsighted family history to want high, explained that nearsightedness's morbidity and the heredity have certain relations. But nearsightedness's occurrence will receive the day after tomorrow the environmental factor influence, therefore, item The first scholars believed that the nearsightedness belongs to the polygenes heredity, namely the patient has cheap oakley sunglasses many pathogenesis genes, but also has the environmental factor function, this in the retinitis simplex nearsightedness's occurrence is the phenomenon which very easy to see. The environmental factor is not good including the illumination, bad reading and working habit, If long time reading and the short distance work, the eye adjustment muscle is at the tight contraction schedule which continues, then adjustment ability is weaken, but has the nearsightedness.

But under the similar condition, is not all people have the nearsightedness, but certain shortsighted patient also by no means does the short distance work , some even very little reads the books and periodicals. Obviously, the nearsightedness is the heredity and the environment combined action result.The nearsightedness is euchromosome recessive hereditary disease highly, is also a related nearsightedness's pair of gene is this sickness pathogenesis gene is taken bad. If is only a gene is the pathogenesis, but another gene is normal, is not taken bad, is only the pathogenesis gene carrier. For puma sunglasses example the parents are not the nearsightedness, but they are highly the shortsighted gene carrier, does not demonstrate the nearsightedness in them, but their pathogenesis gene heredity gives the child, caused the child to have two shortsighted genes, will therefore cause the child to become the nearsightedness.Highly nearsightedness's man with highly nearsightedness's female union, the opportunity which the children are taken bad above 90%, if unifies with the nearsightedness gene carrier, the children possibly have half of are highly the nearsightedness, but with the normal vision or the low nearsightedness union, the children has the nearsightedness The eye opportunity is 1%.