Nowmoreandmorestudents,seniororjunior,eventhepupilsinprimaryschools,arenear-sighted.Forexample,sixtypercentofthestudentsinourclasswearglasses.Howseriousthesituationis!

　　Whatcausethemtobenear-sighted?Itisbecausewereadbooksallday,soeyesaretootired.Atthesametime,mostofusdon'tpayattentiontotherightpostureofwriting.

　　Itiswell-knownthateyesaretheimportantpartofourbody.Weusethemtoseeallthethingsaroundus.Withouteyeswecannotstudyorworkwell.Sopeoplesayeyesarethewindowofthesoul.Ofcourse,glassesareagreathelpifwearenear-sighted.Butitisinconvenientwithglassesonyourface.

　　Thougheveryoneknowstheimportanceofoureyes,notallofusunderstandhowtoprotectthem.Ithinkweshould.

　　First,afterwehaveworkedforaboutanhourorso,we'dbetterletoureyeshavearest——eitherclosetheeyesforashorttimeorlookintothedistance.Second,weshould'treadinthesun,orinapoorlight,orinamovingbus,anddorememberreadingonbedisabadhabit.Third,weshouldpayattentiontothedistancefromeyestothebook.Don'treadtooclosethebook.Finally,weshouleinsistondoingeye-exerciseday.

　　Inshort,weshouldtryourbesttokeepoureyesbright.