Ngokufanayo namathayi, izixubho namabhethri, amalensi nawo anedethi yokuphelelwa yisikhathi.Ngakho-ke, amalensi angahlala isikhathi esingakanani?Eqinisweni, amalensi angasetshenziswa ngokunengqondo izinyanga eziyi-12 kuye kweziyi-18.

1. Ukusha kwelensi
Ngesikhathi sokusebenzisa i-lens optical, ubuso buzogqokwa ngezinga elithile.Ilensi ye-resin ingakwazi ukumunca imisebe ye-ultraviolet, kodwa ngesikhathi esifanayo, ilensi izoguga futhi ibe phuzi.Lezi zici zizothinta ukudluliselwa.

2. Incwadi kadokotela izoshintsha minyaka yonke
Ngokushintsha kweminyaka, indawo yamehlo kanye nezinga lokusetshenziswa, isimo se-refractive seso lomuntu siye sashintsha, ngakho-ke kuyadingeka ukuphinda kuhlolwe i-optometry njalo ngonyaka owodwa noma unyaka nesigamu.

Abantu abaningi bacabanga ukuthi amehlo abo amisiwe.Uma nje izibuko ze-myopia zingezimbi, kulungile ukuzigqoka iminyaka eminingana.Ngisho nabanye abantu abadala banomkhuba “wokugqoka izibuko iminyaka engaphezu kweshumi”.Eqinisweni, lo mkhuba awulungile.Kungakhathaliseki ukuthi izibuko ze-myopia noma i-presbyopic, zidinga ukuhlolwa njalo futhi zishintshwe ngesikhathi uma ukungakhululeki kwenzeka.Iziguli ezivamile ze-myopia kufanele ngokuvamile zishintshe izibuko zazo kanye ngonyaka.

Intsha esesikhathini sokukhula ngokomzimba, uma igqoke izibuko ezifiphele isikhathi eside, i-retina ye-fundus ngeke ithole ukugqugquzelwa kwezinto ezicacile, kodwa izosheshisa ukuthuthukiswa kwe-myopia.Ngokuvamile, intsha egqoka izibuko ze-myopia kufanele ihlolwe amehlo njalo ngemva kwezinyanga eziyisithupha.Uma kukhona ushintsho olukhulu ezingeni, njengokwenyuka kwama-degree angaphezu kuka-50, noma izibuko zigqokwe kabi, kufanele futhi zishintshe izibuko ngesikhathi.

Abantu abadala abangawasebenzisi njalo amehlo abo kufanele bahlolwe amehlo abo kanye ngonyaka futhi kuhlolwe nezibuko zabo ukuthi azikho yini umonakalo.Uma kukhona ukuklwebheka endaweni yelensi, ngokusobala kuzothinta ukusebenza kwayo kokulungiswa kokubona.Izingilazi ze-presbyopic zabantu asebekhulile kufanele futhi zishintshwe njalo.I-Presbyopia ibangelwa ukuguga kwamalensi.Izinga lokuguga lamalensi liyakhula ngokuya ngeminyaka.Khona-ke izinga le-lens liyakhuphuka.Abantu abadala kufanele bashintshe izibuko zabo uma benenkinga yokufunda amaphephandaba futhi namehlo abo evuvukele.