Mid ka mid ah su'aalaha dadka intooda badan ay maqlaan marka ay helaan muraayadaha lenses-ka ee la rakibay waa, "Tilmaanta refractive-kee ayaad u baahan tahay?"Waxaan aaminsanahay in dad badani aysan fahmin ereygan xirfadeed, aynu maanta wax ka baranno!
Dad badan oo bulshada maanta ka mid ah ayaa aaminsan in muraayadaha qaaliga ah ay qaali yihiin, ay ka fiican yihiin!Dhakhaatiir badan oo indho-indhayn ah, oo fahma cilmi-nafsigan macaamiisha, ayaa inta badan isticmaala index refractive meel wax lagu iibiyo si ay u kordhiyaan qiimaha muraayadaha si ay u helaan faa'iidooyin dhaqaale oo sarreeya.Taasi waa, marka uu sareeyo index refractive, lensku wuu dhuuban yahay, iyo qiimaha qaaliga ah!
Faa'iidada ugu weyn ee muraayadaha dib-u-celinta sare waa khafiifnimadooda.Macaamiisha ku jira doorashada muraayadaha, waa inay doortaan iyadoo loo eegayo darajooyinka indhaha ee kala duwan si ay ugu habboonaadaan iyaga u gaar ah, waxqabadka ugu fiican ee muraayadda, indho-la'aanta indho la'aanta index refractive sare maaha mid la jecel yahay, ku habboon waa tan ugu muhiimsan!
Muraayadaha indhaha ee wanaagsan waa inay tixraacaan muraayadaha leh sifooyinka wanaagsan ee indhaha, kuwaas oo ka muuqda gudbinta sare, caddaynta sare, kala-baxa yar yar, caabbinta xirashada wanaagsan, dahaarka wanaagsan iyo shaqada ilaalinta wanaagsan.
Caadiyan tusmada muraayadaha muraayadaha waxaa ka mid ah 1.49, 1.56, 1.61, 1.67, 1.74, 1.8, 1.9.
Marka laga eego dhinaca xirfadda si loo doorto tusaha dib-u-celinta guud ahaan iyadoo loo eegayo tixgelinta dhammaystiran ee soo socota:
1. Degree of myopia.
Myopia waxa loo qaybin karaa myopia fudud (gudahood 3.00 digrii), myopia dhexdhexaad ah (inta u dhaxaysa 3.00 iyo 6.00 degrees), iyo myopia sare (ka sarreeya 6.00 darajo).
Guud ahaan HADALKA IFTIINKA IYO MYOPIA dhexdhexaadka ah (400 darajo ka yar) tusmada dib-u-celinta ee DOORASHADA WAA 1.56 OK, (300 darajo ilaa 600 darajo) 1.56 AMA 1.61 labadan Nooc ee xulashada tusmada REFRACTIVE, 600 digrii ee kor ku xusan waxay tixgelin karaan 1.61 index ka sare muraayad.
Marka uu sareeyo tusaha wax-soo-celinta ayaa ah, inta badan dib-u-soo-celinta waxay dhacdaa ka dib marka iftiinku dhex maro muraayadda, iyo khafiifinta muraayadda.Si kastaba ha ahaatee, mar kasta oo index refractive waa, aad u halis ah ifafaale kala firidhsan yihiin, sidaas darteed muraayada index refractive sare leh tirada Abbe hoose.Si kale haddii loo dhigo, marka tusaha refractive-ku sarreeyo, muraayaddu way sii dhuuban tahay, laakiin marka wax la eegayo, midabka midabkiisu aad uma qani marka loo eego 1.56 index refractive.Waxa halkan lagu sheegay waa uun farqi yar marka loo eego isbarbardhigga.Tignoolajiyada hadda jirta, muraayadda leh index refractive sare ayaa sidoo kale aad ugu fiican aragga.Muraayadaha tusmooyinka refractive sare waxaa badanaa loo isticmaalaa kumanaan darajo.
2. Baahida mawduuca.
Doorashada index refractive sida waafaqsan heerka myopia ma aha mid dhamaystiran, laakiin waa in lagu daraa doorashada jir ah iyo xaaladda dhabta ah ee isha si ay u go'aansato.
Hadda shahaadada myopic guud ahaan waa sare, at shan ilaa lix Baidu's myopia, index refractive hoose ee lens ayaa noqon doona dhumuc weyn, miisaanka qaraabo noqon doonaa wax yar ka weyn, markan, haddii raadinta shahaado qurux badan waa sare, waxaan soo jeedinaynaa in ka badan 1.61. index refractive, sidoo kale marka la dooranayo qaab sawir si looga fogaado nooca sanduuqa waaweyn, si dhamaystiran, heerka muraayadaha quruxda iyo raaxada waa mid aad u wanaagsan.
Gabagabo: DOORASHADA index of refractive waa in lagu saleeyaa talada xirfadle ah indhaha, marka loo eego heerka myopia, size frame, baahiyaha bilicsanaanta, raaxada aragga, qadarka isticmaalka iyo tixgelinno kale oo dhamaystiran, ku haboon waa tan ugu muhiimsan.
Waqtiga boostada: Agoosto-26-2022