Meter e kobehileng ea CornealBL-8002

Kaha matla a khopo a khantšang a etsa 2/3 ea matla a felletseng a leihlo la motho, tekanyo ea kobeho ea cornea e ka utloisisa matla a felletseng a leihlo la motho. Ka nako e ts'oanang, kaha boholo ba leihlo la motho la astigmatism le tsoa ho cornea, litemana tsa curvature curvature li ntle haholo ho latela tlhahlobo ea mahlo le lengolo la ngaka. bohlokoa. Ho khomphutha ea likhomphutha, ho boletsoe tekanyo ea sekhahla sa kotopo


Tlhaloso ea Sehlahisoa

 Karolong ena, re tla tsebisa keratometer ea mahlo le ts'ebeliso ea eona. Keratometer e sebelisa likarolo tsa ponahalo ea cornea ho lekanya radius ea eona e kobehileng. Likarolo tsa keratometer ke tse latelang: iece Sekoahelo sa mahlo se ka fetoloa hore mahlo a mohlahlobi a tsepamisoe hantle. Phomolo ea mohlahare le hlooho li ka fetoloa e le hore boemo ba hlooho ea taba bo ka ts'oaroa nakong ea tlhahlobo; mohele o ka tsamaisoa ho ea holimo le tlase ho lokisa bophahamo ba seletsa e le hore mahlo a moetsi a be boemong bo tšoanang. Mabili a likhato tse peli a ka lekanya ho kobeha ha meridians tse peli tse ka sehloohong. There) Ho na le sekala sa axial, se ka hlalosang boemo ba meridians tse peli tse kholo, mme moqomo oohle oa mitha e kobehileng o ka potoloha. Sekhahla se hlahisitsoe ho cornea ea mohlahlobi; mojaro oa taolo ea ho tsepamisa maikutlo o ka tsamaisoa ho ea pele le morao ho tsepamisa lesupi ho cornea ea mohlahlobi ka ho hlaka.

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① Sekoahelo sa mahlo se ka fetoloa hore mahlo a mohlahlobi a tsepamise mahlo hantle.

Phomolo ea mohlahare le hlooho ea hlooho li ka fetoloa e le hore boemo ba hlooho ea taba bo ka ts'oaroa nakong ea tlhahlobo; mohele o ka tsamaisoa ho ea holimo le tlase ho lokisa bophahamo ba seletsa e le hore mahlo a moetsi a be boemong bo tšoanang.

Mabili a likhato tse peli a ka lekanya ho kobeha ha meridians tse peli tse ka sehloohong.

④ Ho na le sekala sa axial, se ka hlalosang boemo ba meridians tse peli tse kholo, mme moqomo oohle oa mitha o kobehang o ka potoloha.

Rorisa e hlahisitsoe ho cornea ea mohlahlobuoa; mojaro oa taolo ea ho tsepamisa maikutlo o ka tsamaisoa ho ea pele le morao ho tsepamisa lesupi ho cornea ea mohlahlobi ka ho hlaka.

Litemana tse tloaelehileng tsa ho kobeha ha 'mele li ka sebelisa radius ea curvature (mm) kapa diopter (D). Ho optometry, hangata ho bonolo haholo ho hlahisa diopter, mme e ka fana ka kotloloho boemo ba astigmatism ea corneal, joalo ka: 43.00 D @ 180 / 44.00 D @ 90, Re ka fumana astigmatism ea corneal ea 1.00 D.

Bohlokoa ba mantlha ba yuniti ea diopter ke hore ho bonolo bakeng sa litsebi tsa lense tsa mahlo ho lekanya palo ea masala a astigmatism (a apereng lense e thata e ikopantseng), hobane index ea likhapha e llang e haufi haholo le index ea refractive ea kotlo ea mothapo balwa ka kobeha corneal. Palo e lekantsoeng ea "astigmatism" e ts'oana le palo ea "ho lisa lense" ka mor'a ho roala lense ea khokahano, ka hona ka ho bapisa palo ea astigmatism e lekantsoeng ke keratometer le palo ea astigmatism e lekantsoeng ka ho qhekella, astigmatism e setseng e ka hakanyetsoa kapele .


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