Iiglasi zePresbyopic zisetyenziswa ngabantu abaninzi abadala ukunceda umbono.Nangona kunjalo, abantu abadala abaninzi abacacanga malunga nombono wokufunda isidanga seglasi, kwaye abazi ukuba bamatanise nini na uhlobo lweglasi yokufunda.
Ke namhlanje, siya kukuzisa isingeniso kwindlela yokubala yokufunda iiglasi.Masifunde kunye.
Isidanga sitshintsha rhoqo.Ngokuqhelekileyo, inyuka ngama-50 degrees rhoqo kwiminyaka emihlanu.Kwimeko yamehlo amahle, ngokuqhelekileyo i-100 degrees kwiminyaka eyi-45, i-200 degrees kwiminyaka eyi-55, kunye ne-250 ukuya kuma-300 degrees kwiminyaka eyi-60. Kwixesha elizayo, iqondo leglasi aliyi kunzulu.Ngoko kufuneka sibalwe njani isidanga?
No.2 izixhobo ezisetyenzisiweyo: isikali, ikhadibhodi, ukukhanya kwelanga
Amanyathelo okusebenza:
1. Yenza iiglasi zokufunda ngokuthe nkqo kwisibuko, kwaye ubeke ikhadibhodi kwelinye icala.
2. Ukulungelelanisa ngokuphindaphindiweyo umgama phakathi kwebhodi yephepha kunye nesibuko kude kube teyona ndawo incinci iqaqambileyo ivela ephepheni.
3. Linganisa umgama f (ngeemitha) ukusuka kwindawo eqaqambileyo ukuya kumbindi wesibuko ngesikali.Ngaba ubude bayo obugxile.
4. Iqondo leeglasi zokufunda lilingana nereciprocal yobude befocal ephindwe nge-100 ukubala iqondo leeglasi zokufunda.
No.3 presbyopia degree inxulumene nobudala
Umzekelo, kwiminyaka engama-45 ubudala, intyatyambo endala +1.50d (okt 150 degrees).Kwiminyaka engama-50, nokuba unxibe iiglasi okanye awunxibi, intyatyambo endala iya kunyuka ibe +2.00d (okt 200 degrees).
Kukho iintyatyambo ezindala.Ukuba unyanzelisa ukuba unganxibanga iiglasi zokufunda, izihlunu zakho zeciliary ziya kuphelelwa kwaye zingakwazi ukulungelelanisa.Ngokuqinisekileyo kuya kwandisa ubunzima bokufunda, kuvelise isiyezi, ukudumba kwamehlo kunye nezinye iimpawu, kwaye kuchaphazele ubomi bakho kunye nomsebenzi.Oku akubobulumko kakhulu.
Ngoko ke, iiglasi ze-presbyopia kufuneka zixhotywe ngokukhawuleza ngaphandle kokulibazisa.Njengoko ukhula, iiglasi zokufunda obuzinxiba azanele kwaye kufuneka zitshintshwe ngexesha.
Ukuba abalupheleyo bafuna ukufaka iilensi eziqhubekayo, bafanele bakhethe ngenyameko.Nje ukuba uvakalelwe kukuba iiglasi zokufunda azikufanelanga isidanga sakho, kufuneka uzibuyisele kwangoko.Ukuba unxibe iiglasi ngeqondo elingafanelekanga ixesha elide, akuyi kuzisa kuphela ukuphazamiseka okuninzi kubomi babantu abadala, kodwa kwakhona kukhawulezisa isantya sokuguga kwamehlo abantu abadala.
Kwaye xa uzifumana une-presbyopia, musa ukufaka iindondo ze-presbyopia ngoko nangoko.Abalupheleyo bafanele basebenzise ubuchule babo bokulungelelanisa amehlo abo baze banike amehlo abo amathuba awaneleyo okwenza umthambo.
Ixesha lokuposa: Jun-20-2022