Funso: Kodi chithunzi chojambula ndi chiyani?
Pomwe ndimagwiritsa ntchito kansalu kameneka kameneka, dokotala wanga amandilipiranso ndalama zambiri zowonjezereka. Kodi chithunzi chojambula ndi chiyani?
Yankho: Makhalidwe a chinyama ndi njira yogwiritsira ntchito kufufuza ndi kuyesa kusintha komwe kumachitika mmaonekedwe ndi umphumphu wa diso lanu. Wolemba mapulogalamu ojambula zithunzi amapanga mphete yowonjezera, yomwe imatchedwa discido disc, pamwamba pa cornea, yomwe imayimiranso kumbuyo.
Pambuyo pofufuza makonzedwe a kuwala, makompyuta amapanga mapu otsogolera a cornea. Zithunzi zojambulidwa ndi wojambula zithunzi zingakhale zothandiza kwa dokotala wanu maso pamene mukufufuza thanzi la maso anu.
Kodi cornea ndi chiyani?
Zithunzi zooneka bwino, zooneka ngati zadongo zophimba iris ndi wophunzira. The cornea imapereka 2/3 mphamvu yowonongeka ku diso. The cornea ndi minofu yapadera yokhala ndi maselo apadera. Palibe mitsempha ya magazi mu cornea kuti ikhale chakudya. Kornea imalandira zakudya zambiri mwachindunji ku misonzi pamwamba ndi kupyolera mumadzi ozizira (madzi omwe amadzaza chipinda chamkati cha diso) mkati mwa diso. Chifukwa cornea ili ngati lenti, iyenera kukhala yopanda chilema ndipo mitsempha ya magazi ingasokoneze ndondomekoyo.
Kodi zojambula zojambula zimasonyeza chiyani?
Zithunzi zamakono zimapereka chidziwitso chochuluka ponena za diso m'madera osiyanasiyana:
- Keratometry - Pambuyo pa makina opanga makina opanga makina opangidwa ndi makina opangidwa ndi makina opangidwa ndi miyala, keratometer imagwiritsidwa ntchito kuyesa malo ochepa mkatikati mwa cornea. Amapereka dokotala miyezo iwiri yokhudza kukula kwa cornea. Keratometer ndi tekinoloje yakale koma mumapezekanso ofesi ya dokotala lero. Komabe, zolemba zamakono zakhala zikusintha kayendedwe ka maonekedwe. M'malo moyesa mfundo ziwiri, wolemba mapulogalamu amatha kuyesa mazana ndi zikwi za mfundo za deta kuti apange mapu ochuluka kwambiri a maso pa malo alionse omwe adokotala akuwakonda. Mapu a mtundu amapanga kuwonetsa kwambiri malo omwe amawerengedwa ndi okongola kwambiri m'mabuluu. Izi sizili zofunikira pa mawonekedwe onse koma zidzamuuza dokotala molondola momwe astigmatism uliri.
- Mapu a kuphulika - Olemba mapulaneti amtundu angasonyezenso mapu okwera. Mapu a mapiri amathandiza dokotala kuona malo osadziwika pa cornea omwe ali osiyana kwambiri ndi ozolowereka. Mapulogalamu ena amasonyeza chithunzi chachitatu chomwe dokotala angakhoze kuzungulira kuti amvetse bwino zomwe zingakhale zikuchitika ndi cornea.
- Kuthandizana ndi lens yoyenera - Dokotala wanu maso amafuna kuti makalenseni anu agwirizane ndi maso anu komanso momwe mungathere, komanso kudziwa momwe thupi lanu limakhalira ndilofunika kwambiri. Ma lens omwe amagwira ntchito mwamphamvu kwambiri amatha kuyendetsa mvula yowonongeka , kupanga malo osayenera a maselo ogwira ntchito. Kumbali ina, kukonzekera lens yomwe ili yosasunthika kungalolere kuthamanga kwa disolo pamaso mwako, kukhumudwitsa ndi kuwononga maselo a epithelial. Kuwunika malonda kumafuna udindo waukulu, mwa iwe ndi dokotala wanu . Muyenera kuyesetsa kutsata ndondomeko yoyenera yoyeretsa komanso kuvala ndandanda. Dokotala wanu ayenera kuyang'anitsitsa bwino kusintha kochepa m'maso mwanu kuti muteteze mavuto aakulu omwe mungawathandize.
- Kusanthula maso pamaso - Misozi yanu ndi yovuta kwambiri. Imodzi mwa ntchito za filimu yotsekemera ndiyo kupanga chipatso chofewa kwambiri chimene kuwalako kudzasokoneza maso. Popanda misonzi, pali mipata yochuluka kwambiri pamwamba pa cornea. Izi zimapanga malo ovuta kwambiri. Misozi imatsegula mipata yonse kuti ipange mawonekedwe abwino. Ngati muli ndi maso owuma, pamwamba sizingakhale bwino ndipo masomphenya anu adzakhala osowa. N'chimodzimodzinso kukungula makilogalamu anu m'magalasi anu. Wokonza mapulogalamu amtundu wambiri amatha kusonyeza momwe nkhopeyo iliri ndi momwe diso louma lingakhudzire masomphenya anu.
Chitsime:
Elliott, David B. Njira Zoyendetsera Ntchito Yoyang'aniridwa Kwambiri, Pp 115-116. Elsevier Limited, 2003.