Eye exercises wall chart with standard vision chart(Chinese Edition)
BEN SHE
Sold by liu xing, Nanjing, JS, China
AbeBooks Seller since April 7, 2009
New - Soft cover
Condition: New
Quantity: 5 available
Add to basketSold by liu xing, Nanjing, JS, China
AbeBooks Seller since April 7, 2009
Condition: New
Quantity: 5 available
Add to basketLanguage:Chinese.Paperback. Pub Date: 2014-8-1 Pages: 1 Publisher: Hubei Science and Technology Press. studies have shown that with the large increase in the use of learning pressure and electronic products. schoolchildren incidence of myopia increased year by year. according to the Chinese Journal of Ophthalmology Network statistics: myopia population accounts for 30% of the total national number. city myopic population ratio reached 33%. which. in the school's pupils wear glasses ratio of 3.
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