Lambarada ku yaal warqaddaada ee qolkaaga ee indhahaaga ayaa laxiriira qaabka indhahaaga iyo xoogga aragtidaada. Waxay kaa caawin karaan garashada inaad leedahay ushaqaynta, FARSAMADA AMA ASTIGMatism - iyo shahaadada heerka.
Haddii aad taqaanid waxa la raadinayo, waxaad macno u sameyn kartaa lambarrada iyo soo gaabinta shaxda dawada laguu qoro.
Od vs. os: mid kasta oo indhaha ah
Dhakhaatiirta indhaha ayaa u isticmaala soo gaabinta "oc" iyo "OS" si loo muujiyo indhahaaga midig iyo bidix.
● Od waa ishaada midig. O o ochus dexter, weedha Laatiinka ee "isha saxda ah."
● Os waa ishaada bidix. OS waxay u gaaban tahay oculus sinsister, Latin "isha bidix."
Waxa kale oo laga yaabaa inay yeesho dawo-dawadaada oo lagu dhejiyay "ou." Tani waa soo gaabintiioculus uterque, taas oo macnaheedu yahay "labada indhood" ee Latin. Erayadan loo soo gaabiyey waxay caan ku yihiin dawooyinka loo qoro muraayadaha indhaha, Xiriir la xiriir muraayadaha indhaha iyo dawooyinka indhaha, laakiin dhakhaatiirta qaarkood iyo rugaha caafimaad ee qaarkood waxay doorteen inay casriyeeyaan rijeetooyinkooda iyagoo adeegsanayaRe (isha midig)iyoLe (isha bidix)halkii OD iyo OS.
Sphere (sph)
Sphere waxay muujineysaa xaddiga awooda lens ee loo qoray si loo saxo wax-ka-qabashada ama wax laga xumaado. Awoodda lenska waxaa lagu cabiray diodireed (d).
● Haddii lambarka ka hooseeya cinwaankan uu la yimaado calaamad laga jaro (-),waad ka muuqataa.
● Haddii lambarka ka hooseeya cinwaankan uu leeyahay calaamad lagu daray (+),waad ka fogaatay.
Dhululubo (cly)
Dhululubo ayaa muujinaya xaddiga awoodda lenska ee loo baahan yahayAstigmatism. Had iyo jeer waxay raacaysaa awoodda Sphere ee qoritaanka muraayadda indhaha.
Lambarka sadaqadda dhululubo ayaa laga yaabaa inuu yeesho calaamad laga jaro (si loo saxo astigmatism-ka-ku-dhafka ah) ama calaamad lagu daray (ee astaggmatism).
Hadeysan waxba ka muuqan sadarkan, ma lihid aaladgal, ama shahaadadaada astigmatism-ka ayaa aad u yar oo aysan u baahnayn in la saxo.
Xariiq dhexda marta
Axis wuxuu sharraxayaa lens Meridian oo aan ku jirin awood dhululuboSax Astigmatism.
Haddii warqadda dhakhtarku qoro ee indhaha ay ku jiraan awoodda dhululubo, waxay sidoo kale u baahan tahay in lagu daro qiimaha dhidibka, kaas oo raacaya awoodda dhululubo.
Dhismaha waxaa lagu qeexaa tiro ka kooban 1 ilaa 180.
● Lambarka 90 wuxuu u dhigantaa mertian-ka toosan ee isha.
● Lambarka 180-aad wuxuu u dhigantaa meridian siman ee isha.
Xisaab isku darid
"Kudar" waaawood weyneed oo lagu darayWaxaa lagu dabaqay qaybta hoose ee muraayadaha badan ee muraayadaha badan si loo saxo carrabbiopia - fossight-ka dabiiciga ah ee ka dhaca da'da.
Lambarku wuxuu ka muuqdaa qaybtan rijeetada marwalba waa awood "oo lagu daray", xitaa marka aadan arkin calaamad lagu daray. Guud ahaan, waxay u dhexeeysaa +0.75 illaa +3.00 d oo waxay noqon doontaa isku awood labada indhood.
R-
Tani waa xaddiga awoodda hantida leh, oo lagu cabiro saamiga diiotars ("pd" ama saddex xagal markii qoran Freehand), loo qoray inuu magdhaboIndhaha is-waafajintaDhibaatooyinka.
Kaliya boqolkiiba boqol ee dawooyinka la qoro ee indhaha waxaa ka mid ah cabbiraadda ciyaarta.
Marka la joogo, xaddiga qashinka ah waxaa lagu muujiyey mid ka mid ah mitir ama unugyo kala duwan oo Ingiriis ah (0.5 ama ½, tusaale ahaan), iyo jihada loo yaqaan 'Prims', iyo jihada loo yaqaan 'salka' saldhigga 'saldhigga' (geeska ugu adag ".
Afar afar ah ayaa loo isticmaalaa jihada prims: bu = salka; BD = salka hoose; Bi = saldhig salka ku jirta (dhinaca sanka ka sanka); Bo = Saldhigga banaanka (dhinaca dhegta xijaabka).
Haddii aad leedahay dano dheeraad ah ama aad u baahan tahay macluumaad fara badan oo xirfad leh oo ku saabsan muraayadaha indhaha, fadlan geli boggayagahttps://www.unenepetical.com/stock-lens/Si aad u hesho caawimaad dheeri ah.