Tšenyo ea mesebetsi ea pono e hlaha ka mabaka a sa tšoaneng. E ka ba:
- mafu a mafura;
- ho ba lefa;
- mathata a mahlo a nako e telele, joalo-joalo.
E 'ngoe ea likhetho bakeng sa ho lokisoa ha pono e seng ea phekolo ea meriana ke ho apara likhalase le likoti (likhalase tsa perforating).
Likhalase tse nang le masoba li sebetsa joang?
Likhalase ka mokoting oa ho ntlafatsa pono ke lipoleiti tsa polasetiki tse nang le masoba a mangata a manyenyane, a hlophisitsoeng ka taelo e pota-potileng, e entsoeng ka polasetiki, hangata ea tšepe, liforeimi. Molao-motheo oa ketso ea likhalase tse ntšo le likoti o itšetlehile ka phello ea kamera ea pinhole kapa stenstop. Ka lebaka la boholo ba sebaka seo, ho phatloha ha leseli ho retina ho fokotsehile, 'me setšoantšo se hlahisoang se ba matla le se matla.
Na likhalase le likoti li thusa ho tsosolosa pono?
Potso ea katleho ea ketso ea likhalase-lik'hamera e tsosa lipuisano tse tebileng. Litsebi tse ling-li-ophthalmologists li lumela hore sesebelisoa sena ha se na tšoaetso ea ho phekola, 'me ho reka likhalase tse senyehang ke tšenyo ea chelete.
Li-oculists tse ling li lumela hore tšebeliso ea likhalase tse nang le likoti e thusa ka nako e loketseng ho fokotsa tsitsipano ho tloha mahlo a mahlo a mahlo, hape e tlatsetsa ho theha mojaro o itseng mahetleng a fokolang. Koetliso ea mahlo e telele le e tloaelehileng ka thuso ea likhalase tse joalo e ikemiselitse ho eketsa mahlo a maholo ka 0.5-1.0 diopters. Ha ho bonolo ho fumana liphello tse kholo ho tsosolosa pono.
Litlhaloso tsa tšebeliso ea likhalase tsa mahlaseli
Likhalase bakeng sa ho lokisoa ponong ka sekoting li khothalletsoa hore li sebelisoe maemong a latelang:
- boikutlo bo holimo;
- ho ba le nako e khutšoanyane;
- astigmatism;
- anisometropia (e fapaneng le mahlo a mahlo mahlong);
- presbyopia (lens chang );
- asthenopia (mahlo a mahlo).
Ho thibetsoe ho sebelisa likhalase tse hloekileng ha
Joang ho sebelisa likhalase le masoba?
E le ho finyella tlhokomelo e hlokahalang ea phekolo, ho hlokahala hore u sebelise likhalase tsa mahlo-li-simulator bakeng sa halofo ea hora ka letsatsi. Mesebetsing ea setsebi e amanang le boima bo bonahalang ba pono, ho kgothaletswa ho apara likhalase metsotso e 10 ka mor'a lihora tse 1-1.5 tsa ts'ebetso. Ke habohlokoa hore u se ke ua tsepamisa mohopolo ka taba e le 'ngoe ka nako, empa u shebe lintho tse haufi le tse ling, u etse hore mahlo a hao a sisinyehe kamehla. Nako ea thupelo ea kalafo ke bonyane selemo se le seng.