Ipheya lamalensi alungele wena kufanele licatshangelwe ngokugcwele lihlanganiswe neziqu zethu, ibanga lomfundi, ukuma kohlaka, isabelomali, isimo sokusebenzisa nezinye izici.
Inkomba ye-refractive ifana nosayizi wezicathulo.Kungakhathaliseki ukuthi yiluphi uhlobo lomkhiqizo, lezi yimingcele evamile, engaqondwa kakhulu njengobukhulu be-lens.Uma iphezulu inkomba ye-refractive, i-lens iba mncane.I-myopia engu-500 degree efanayo, ilensi engu-1.61 ingu-1.56 izacile.
Noma iphezulu inkomba ye-refractive, iba mncane kakhulu.Ngokuvamile, ukuphakama kwenkomba ye-refractive, inombolo ye-Abbe iphansi.Zikhethele iziqu ezifanele
Izinkomba ze-refractive ezihlukene zinezinombolo ze-Abbe ezihlukene.Okulandelayo izinombolo ze-Abbe ezihambisana nezinkomba ezihlukile zokuphinda zibukeke:
1.50
Abe inombolo 58
Inombolo ye-Abbe ephezulu kakhulu iseduze nesipiliyoni esibonakalayo seso lenyama.Ilensi eyindilinga izoba wugqinsi kakhulu uma idigri iphezulu.Ilungele kuphela i-myopia enezinga eliphansi ngaphakathi kwama-degree angu-250.Ijika eliyisisekelo likhulu, futhi alizifanele izibuko zohlaka olukhulu.
1.56
Inombolo ye-Abbe 35-41
Inombolo ye-Abbe iphakathi, i-1.56 iyinkomba ephansi ye-refractive yezinhlobo eziningi zamalensi, eshibhile futhi ifanele i-myopia ngaphakathi kwamadigri angu-300;Akunconywa uma izinga lokushisa lidlula ama-degree angu-350.Ilensi izoba mkhulu uma idigri iphakeme.
1.60
Inombolo ye-Abbe 33-40
U-1.60 kanye no-1.61 yimikhuba ehlukene yokubhala enenkomba efanayo yokuphinda iphendule.Awukho umehluko.Ngokusho kwemikhiqizo ehlukene nochungechunge, inani le-Abbe liyahlukahluka kusuka ku-33-40.Isibonelo, ukuvikelwa kwemisebe yenyanga ekhanyayo engu-1.60 yi-33 dB, futhi uchungechunge lwe-PMC lwenyanga ekhanyayo luyi-40 dB.
1.67
U-Abbe inombolo 32
Inombolo ye-Abbe ephansi, ukuhlakazeka okukhulu kanye nomthelela ojwayelekile wokucabanga.Ebangeni le-550-800 degree myopia, i-1.61 iminyene kakhulu, isabelomali sinomkhawulo, futhi asingaphezu kuka-1.71, ngakho-ke i-1.67 iyisinqumo sokuyekethisa.
1.71
U-Abbe inombolo 37
Ngokuvamile, ukuphakama kwenkomba ye-refractive yelensi, iyancipha inombolo ye-Abbe kanye nokuhlakazeka okukhulu.Kodwa-ke, ngokuphumelela kobuchwepheshe be-lens, lo mthetho uyaphulwa.Isibonelo, u-1.71 mncane kuno-1.67, futhi inombolo ye-Abbe iphakeme.
1.74
U-Abbe inombolo 33
Inkomba ye-refractive kakhulu kanye nenombolo ye-Abbe yelensi ye-resin iphansi, futhi intengo iphakeme kakhulu.Kodwa-ke, nge-myopia ephezulu, akukho okunye ukukhetha.Phela, ukujiya kuhlale kuwukuhlangenwe nakho okunembile kakhulu.Ngaphezulu kwamadigri angu-800 kungacatshangelwa, futhi ngaphezu kwama-degree angu-1000 angabhekwa ngaphandle kokucabanga nganoma yini enye.Qhathanisa nje i-1.74.
Isikhathi sokuthumela: Mar-09-2023