Tikamakalamba, disolo, dongosolo lolunjika la maso athu, limayamba kuuma pang'onopang'ono ndikutaya kukhazikika kwake, ndipo mphamvu yake yosinthira imayamba kuchepa pang'onopang'ono, zomwe zimatsogolera ku zochitika zakuthupi: presbyopia. Ngati malo omwe ali pafupi ndi aakulu kuposa ma centimita 30, ndipo zinthu sizingawoneke bwino mkati mwa 30 centimita, ndipo muyenera kuyang'ana kutali kuti muwone bwino, muyenera kuganizira kuvala magalasi a presbyopic.
Nthawi ino tikuphunzira za magalasi opita patsogolo a multifocal mu presbyopia Optics. Pamene presbyopia ichitika, zimakhala zotopetsa kwambiri kuwona, chifukwa diso la munthu limakhala lomasuka poyang'ana kutali, ndipo kuyang'ana kwakukulu kumafunika mukuyang'ana pafupi. Komabe, mphamvu yosinthira ya lens ya presbyopic ndi yofooka, ndipo kuyang'ana sikuli kokwanira poyang'ana pafupi, zomwe zidzawonjezera kulemetsa kwa maso. , zizindikiro monga kupweteka kwa maso, kusawona bwino, ndi mutu ndizo zizindikiro zofala.
Mfundo yopitilira magalasi a multifocal
Mfundo yopangira ma lens a multifocal ndikupanga malo ambiri opitilira kutali, apakati komanso pafupi ndi mandala amodzi. Nthawi zambiri, kumtunda kwa mandala ndi kwa mphamvu yakutali, gawo lapansi ndi la mphamvu yapafupi yowunikira, ndipo gawo lapakati la disololo ndi gawo la gradient lomwe limapitilira mphamvu yowunikira pang'onopang'ono. Pafupi ndi malo owoneka bwino a magalasi ambiri owoneka bwino ndi 10-16 mm pansi pakatikati patali komanso 2-2.5 mm m'mphuno. Tiyenera kuzindikira kuti pali madera opotoka mbali zonse za zone yopita patsogolo. Pamene mzere wowonekera ukupita kuderali, chinthu chowoneka chidzawonongeka, zomwe zimapangitsa kuti zikhale zovuta komanso zosasangalatsa kuziwona.
Momwe mungagwiritsire ntchito ma lens opita patsogolo a multifocal
Ma lens opita patsogolo pang'onopang'ono amawonjezera mphamvu kuchokera pamwamba mpaka pansi, ndikupereka magalasi atatu obisika, ophimba kutali, apakatikati, ndi pafupi ndi maso, akuwonetsa momveka bwino mawonekedwe akutali. Mukavala magalasi opita patsogolo a multifocal kwa nthawi yoyamba, gawo la masomphenya kumbali zonse za lens likhoza kupotozedwa ndi kupotozedwa. Ngati chimango chikuyenda kapena kukhala chopindika, chingayambitsenso kusawona bwino komanso kusawona bwino. Tsatirani masitepe a "chete poyamba ndiyeno sunthani, choyamba mkati ndi kunja" kuti muyese pang'onopang'ono ndikuzolowera.
01. Malo a telephoto lens
Mukamayendetsa galimoto kapena kuyang'ana, sungani chibwano chanu mkati pang'ono, mutu wanu ukhale wopingasa, ndipo yang'anani pakati pa disolo pamwamba pang'ono.
02. Malo a lens apakati
Mukamayendetsa galimoto kapena kuyang'ana, sungani chibwano chanu mkati pang'ono, mutu wanu ukhale wopingasa, ndipo yang'anani pakati pa disolo pamwamba pang'ono. Mukhoza kusuntha khosi lanu pang'ono ndi pansi mpaka chithunzicho chikuwonekera bwino.
03. Malo otseka magalasi
Powerenga buku kapena nyuzipepala, ikani patsogolo panu, tambasulani chibwano chanu patsogolo pang'ono, ndipo sinthani kuyang'ana kwanu pansi ku malo oyenera a galasi.
04. Malo osawoneka bwino a galasi
Pali madera kumbali zonse za lens kumene kuwala kumasintha, ndipo gawo la masomphenya lidzasokonezedwa. Izi ndi zachilendo.
05. Malingaliro:
Kukwera ndi kutsika masitepe: Tsitsani mutu wanu pang'ono ndikuyang'ana pansi, ndipo sinthani maso anu kuchokera pagalasi pafupi ndi malo apakati kapena aatali.
Kuyenda tsiku ndi tsiku: Ngati zimakuvutani kulunjika, yesani kuyang'ana kutsogolo kwa mita imodzi kuti muwongolere komwe akulunjika. Chonde tsitsani mutu wanu pang'ono poyang'ana mmwamba.
Kuyendetsa kapena kugwiritsa ntchito makina: Ngati mukufuna kuyang'ana kutali ndi pafupi, m'mbali kapena kuchokera m'mbali zingapo pamene mukugwira ntchito, chonde teroni pokhapokha mutazolowera magalasi opita patsogolo.
Nthawi yotumiza: Dec-01-2023