Labada muraayadood ee adiga kugu habboon waa in si buuxda loo tixgeliyo marka lagu daro shahaadadayada, fogaanta ardayga, qaabka qaabka, miisaaniyada, isticmaalka xaaladaha iyo arrimo kale.
Tilmaanta refractive waa sida cabbirka kabaha. Iyadoo aan loo eegin calaamadda, kuwani waa xuduudaha caadiga ah, kuwaas oo si caan ah loo fahmi karo dhumucda muraayadda. Markasta oo uu sareeyo index refractive, ayaa lensku sii yaraanayaa. Isla 500 darajo myopia, muraayadda 1.61 waa 1.56 khafiif ah.
In kasta oo uu sareeyo index refractive-ku, waa ka sii dhuuban yahay. Guud ahaan marka loo hadlo, index refractive sare waa, hoos u ah tirada Abbe waa. U dooro shahaadada ku habboon naftaada
Tusmooyinka dib-u-celinta ee kala duwan ayaa leh nambaro Abbe oo kala duwan. Kuwa soo socda waa lambarada Abbe ee u dhiganta tusmooyinka dib-u-celinta ee kala duwan:
1.50
Abbe nambar 58
Nambarka Abbe ee aadka u sarreeya wuxuu ku dhow yahay waayo-aragnimada aragga ee isha qaawan. Muraayada wareegsan ayaa noqon doona mid aad u dhumuc weyn haddii darajo sare tahay. Waxay ku habboon tahay oo kaliya myopia-hooseeya gudaha 250 digrii. Qallooca salku waa weyn yahay, kumana habboona muraayadaha waaweyn ee muraayadaha.
1.56
Abbe nambar 35-41
Nambarka Abbe waa mid dhexdhexaad ah, 1.56 waa tusaha dib-u-celinta ugu hooseeya ee noocyada muraayadaha intooda badan, kaas oo jaban oo ku habboon myopia gudaha 300 darajo; Laguma talinayo haddii heerkulku ka sarreeyo 350 darajo. Muraayada ayaa sii dhumuc weyn doona marka shahaadadu ay sareeyso.
1.60
Abbe nambar 33-40
1.60 iyo 1.61 waa caadooyin qoraal oo kala duwan oo leh tusmeyn isku mid ah. Ma jiro farqi. Marka loo eego noocyada kala duwan iyo taxanaha, tirada Abbe way kala duwan tahay 33-40. Tusaale ahaan, ilaalinta shucaaca dayaxa dhalaalaya 1.60 waa 33 dB, iyo taxanaha PMC ee dayaxa dhalaalaya waa 40 dB.
1.67
Abbe number 32
Nambarka Abbe ee hooseeya, kala firdhisan weyn iyo saamaynta sawirka guud. Inta u dhaxaysa 550-800 myopia, 1.61 waa mid aad u dhumuc weyn, miisaaniyadu waa xaddidan tahay, mana aha wax ka badan 1.71, markaa 1.67 waa doorasho tanaasul ah.
1.71
Abbe nambar 37
Guud ahaan, mar kasta oo uu sareeyo index refractive ee muraayadda, hoos u dhaca lambarka Abbe iyo weynaanta kala firidhsanaanta. Si kastaba ha ahaatee, horumarka tignoolajiyada qalabka muraayada, sharcigan waa la jebiyey. Tusaale ahaan, 1.71 wuu ka khafiifsan yahay 1.67, lambarka Abbena wuu ka sarreeyaa.
1.74
Abbe nambar 33
Tusmada ugu firfircoon iyo tirada Abbe ee lenska xabagta ayaa hooseeya, qiimuhuna waa mid aad u sarreeya. Si kastaba ha ahaatee, myopia sare, ma jirto doorasho kale. Ka dib oo dhan, dhumucdiisuna had iyo jeer waa waayo-aragnimada ugu dareen. In ka badan 800 darajo ayaa la tixgelin karaa, in ka badan 1000 darajo ayaa la tixgelin karaa iyada oo aan wax kale laga fikirin. Kaliya dhig 1.74.
Waqtiga boostada: Mar-09-2023