Aw yu de si di wɔl? Aw yu no di pipul dɛn we de arawnd yu, di tin dɛn we de arawnd yu, ɛn di fayn fayn kɔlɔ dɛn we de na di wɔl? Di sikrit de pan di wɔndaful we aw yu valyu yay ɛn yu bren de wok togɛda, we dɛn kɔl “vishɔn.” Dis nɔto jɔs fɔ jɔs “si”; na wan wok we rili kɔmpleks ɛn we rili impɔtant. Tide, lɛ wi brok aw vishɔn de wok insay wan simpul we we izi fɔ ɔndastand.
Wetin na Vishɔn? Fɔ tɔk am simpul wan...
Fɔ tɔk am simpul wan, vishɔn na di prɔses we yu yay ɛn yu bren de wok togɛda fɔ tek di layt we de riflɛkt ɔf di wɔl we de rawnd yu ɛn tɔn am to imej we gɛt minin. Na wan pan yu fayv men sɛns dɛn. Fɔ bɔku pan wi, di wan ol we aw wi ɔndastand di wɔl na di we aw wi de si am. Imajin aw yu layf go difrɛn if i nɔ bin de!
Aw yu yay de wok? Wan mirekul we dɛn kin yuz fɔ du sɔntin!
di prכsεs fכ si de bigin we yu yay dεn no layt εn kכnvכlt am to nyural signal dεm. Dɔn dɛn signal ya kin travul tru yu optik nɛv dɛn to yu bren. Yu bren na di masta intaprita; i de tek dɛn signal ya, prosɛs dɛn, ɛn mek di pikchɔ we yu si. Dis kin apin klos to wan tɛm, bɔku tɛm ɛvri sɛkɔn.
Yu yay jɔs tan lɛk kamɛra?
Yɛs, bɔku tɛm wi kin kɔmpia yay to kamɛra. Bɔt fɔ tru, na di ɔda we: Dɛn bin mek kamɛra dɛn bay we dɛn falamakata di teknɔlɔji we mɔtalman yay de yuz.
Tink bɔt aw kamɛra de wok. I gɛt wan lens we de gɛda layt ɛn dayrɛkt am to wan spɛshal sɛns. Da sɛns de kin chenj layt to ilɛktrik signal, we wan smɔl kɔmpyuta we de insay di kamɛra kin prosɛs fɔ mek i bi pikchɔ. Yu kin ivin ajɔst di fos ɛn kɔntrol ɔmɔs layt de go insay di kamɛra.
Yu yay dɛn gɛt lens dɛn bak . Dɛn tin ya kin gɛda layt ɛn put am pan wan tin we dɛn kɔl retina . Di retina de wok lɛk kamera sɛns, bɔt i dɔn go bifo fa fawe ɛn i kɔmpleks. di rεtina de kכnvכlt di layt we de kam insay to nyural signal dεm εn sεnd dεm to di bren.
Jɔs lɛk kamɛra, yu yay de du ɔtomɛtik wok dɛn lɛk fɔ fos ɛn rigul layt. yu pupil dεm de dilay כ kכnstrikt fכ kכntro di כmכnt כf layt we de go insay di yay. Dis tɛm ya, di mɔsul dɛn we de insay yu yay kin chenj di shep we di lens gɛt fɔ mek shɔ se yu ebul fɔ pe atɛnshɔn klia wan pan tin dɛn we de na difrɛn difrɛn say dɛn.
Wetin na di retina ɛn aw i de wok?
yu retina na wan layεr we rili spεshal, we rili sεnsitiv fכ di tisu. I gɛt sɛl dɛn we dɛn kɔl fotorɛsɛptɔ , we rili min “sɛl dɛn we de tek layt.” We layt hit dɛn sɛl ya, kemikal ɛn ilɛktrik riakshɔn kin apin. dis na aw di sεl dεm de kכd layt insay nyural signal dεm.
Tu men kayn foto-rɛsɛptɔ dɛn de:
- Rod: Na dɛn wan ya kin mek dɛn no difrɛns pan layt braytnɛs. Dɛn kin ɛp yu fɔ si we layt nɔ de shayn ɔ we layt nɔ de shayn bɛtɛ.
- Kɔn: Dɛn wan ya kin fil mɔ ɛn na dɛn kin mek dɛn no fayn fayn tin dɛn ɛn no difrɛn kɔlɔ dɛn.
We layt dɔn chenj to dɛn nyural signal ya, di retina kin transmit dɛn to yu optik nɛv dɛn .
Di wok we di optik nɛv dɛn de du
Yu optik nɛv dɛn de wok lɛk data kebul dɛn we de spid. Dɛn kin kɛr signal frɔm di retina to difrɛn pat dɛn na di bren. dis signal dεm de travul along di optik nεv dεm fכ rich di vishכnal prכsεsin sεntr dεm, we de rispansabl fכ dikod εn intaprit wetin yu de luk.
Di bren de mek di las kɔl!
Di las ɛn impɔtant tin kin apin insay yu bren. I de tek di signal dɛn we dɛn kɔd, dikɔd dɛn, ɛn yuz da infɔmeshɔn de fɔ mek wan kɔrɛkt pikchɔ frɔm di input we ɔl tu di yay dɛn de put.
Tink bɔt dis: as yu de rid dis sɛntɛns, yu bren de tap di langwej sɛnta dɛn ɛn mɛmori bank dɛn wan tɛm fɔ mek di wɔd dɛn gɛt sɛns. Na so yu ɔndastand wetin yu de rid, mɛmba wetin i min, ɛn jɔyn am wit ɛkspiriɛns dɛn we yu bin dɔn gɛt trade.
Fɔ tɔk smɔl, yu bren kin jɔyn di infɔmeshɔn we kɔmɔt na difrɛn say dɛn fɔ gi yu wan kɔmplit, mininful pikchɔ bɔt di wɔl.
Us tin dɛn kin afɛkt yu yay?
Bikɔs vishɔn nid fɔ gɛt di kɔdineshɔn we nɔ gɛt wan prɔblɛm wit bɔku bɔku strɔkchɔ dɛn, difrɛn wɛlbɔdi kɔndishɔn dɛn kin ambɔg dis prɔses. Sɔm kɔndishɔn kin afɛkt bɔku pat dɛn na di vishɔnal sistɛm wan tɛm.
Di kɔmɔn tin dɛn we kin afɛkt di we aw pɔsin de si tin na:
- Kɔndishɔn dɛn we gɛt fɔ du wit di yay: Sɔm ɛgzampul dɛn na katarakt ɔ glaukoma.
- Retina ɛn optik nerve disɔda: Kɔndishɔn lɛk dayabitik retinopathy we dayabitis kin kam wit.
- Nyurolɔjik kɔndishɔn: Prɔblɛm dɛn na di bren, lɛk strok ɔ bren tumbu, kin rili ambɔg yu yay.
Yu tink se difrɛns de bitwin “vishɔn” ɛn “si”?
Bɔku pipul dɛn, ivin sɔm pipul dɛn we sabi du di wok, kin yuz di wɔd dɛn “vishɔn” ɛn “say” fɔ chenj. Bɔt, dɛn nɔ kin rili bi di sem tin. Yu kin teknik wan ɛkspiriɛns di tin dɛn we yu kin si (lɛk fɔ imajin pikchɔ na yu maynd) we yu nɔ rili yuz yu yay. Di kɔmɔn tin, nyurolɔjik kɔndishɔn dɛn de usay yu yay de wok pafɛkt wan, bɔt yu bren de tray tranga wan fɔ ɛksplen wetin yu de si.
Fɔ mek wi no klia wan:
Sayt na jɔs di fyzikal ebul fɔ no layt ɛn chenj am to signal fɔ di bren fɔ prosɛs.
Fɔ si tin, i nid fɔ mek di bren ebul fɔ ɛksplen dɛn sayn dɛn de. If dɛn nɔ ɛksplen da we de, di sayn dɛn we dɛn kin sɛn frɔm di yay to di bren nɔ gɛt ɛni minin.
Wan ɛgzampul fɔ dis difrɛns na visual agnosia . Pipul wae gɛt dis sik kin gɛt pafɛkt wɛl bɔdi yay, bɔt dɛn bren kin tray tranga wan fɔ no wetin dɛn de si. Wan ɔda patikyula ɛgzampul na prosopagnosia (ɔ “fes blayndnɛs”), usay pɔsin kin si in fes klia wan bɔt i nɔ kin ebul fɔ no udat i gɛt.
Aw fɔ protɛkt yu valyu yay dɛn
Yu kin du sɔm tin dɛn fɔ mek yu kɔntinyu fɔ si ɛn protɛkt yu yay. Dɛn step ya impɔtant:
- Di impɔtant tin fɔ du ɛgzam fɔ yu yay ɔltɛm: Ɔlman, ivin di wan dɛn we biliv se dɛn gɛt 20/20 vishɔn, fɔ de ɛgzam in yay ɔltɛm. Dɛn chɛk-ap ya kin no bɔt tin dɛn we yu nɔ go ivin notis. Rifraktiv mistek lɛk fɔ si nia (myopia) ɔ fɔ si fa (hyperopia) kin kam so smɔl smɔl dat yu nɔ go no se yu yay dɔn chenj te pɔsin we sabi du am no.
- Protɛkt yu yay frɔm injury: Ɛnitɛm we prɔblɛm de fɔ yu yay, put di tin dɛn we go protɛkt yu fɔs. Wear sef gogl, fes shild, ɔ di rayt aywe we go protɛkt yu. Sɔnglas impɔtant bak bikɔs i de protɛkt yu yay frɔm UV raytin we de ambɔg yu.
- Tink bɔt aw yu de it: Yu yay nid sɔm patikyula vaytamɛn ɛn tin dɛn fɔ mek i wok fayn fayn wan. If yu gɛt kwɛstyɔn bɔt it we go ɛp yu yay, go to yu praymari dɔktɔ ɔ pɔsin we sabi bɔt yu yay.
- Nɔ fɔgɛt fɔ du tin wit yu bɔdi: Yu yay wɛlbɔdi gɛt fɔ du wit yu ɔl yu bɔdi wɛlbɔdi. We yu de du tin wit yu bɔdi, dat kin ɛp fɔ mek yu blɔd go ɔlsay na yu bɔdi fayn fayn wan, ivin yu yay.
- Nɔ smok ɛn tin dɛn we yu kin yuz fɔ smok: Fɔ smok, fɔ vap, ɛn fɔ yuz tabak kin ambɔg yu jenɛral wɛlbɔdi ɛn i kin ambɔg yu yay bad bad wan. If yu lɛf ɔ avɔyd dɛn abit ya ɔltogɛda, dat kin mek big difrɛns.
- Go to dɔktɔ kwik kwik wan fɔ di chenj dɛn we yu de si wantɛm wantɛm:If yu nɔ de si fayn wantɛm wantɛm ɔ yu si yu yay chenj bad bad wan, go to dɔktɔ wantɛm wantɛm. Dis kin bi sayn fɔ siriɔs mɛdikal imejensi.
Mɛsej we dɛn kin kɛr go na os
Fɔ bɔku pan wi, vishɔn na di sɛns we impɔtant pas ɔl we wi de yuz ɛvride. Pan ɔl we i kin tan lɛk se na simpul tin, fɔ tru, na wan pan di wok dɛn we yu bɔdi kin du we at fɔ du. Fɔ mek yu ebul fɔ si klia wan, yu yay, yu retina, optik nɛv, ɛn yu bren ɔl fɔ wok togɛda pafɛkt wan.
Bɔku tin de we yu go du fɔ protɛkt yu valyu yay. Fokus fɔ kip yu wɛl bɔdi so dat yu go spɛn smɔl tɛm fɔ wɔri bɔt yu yay ɛn mɔr tɛm fɔ ɛnjɔy di wɔl wae de arawnd yu. Nɔ fɔgɛt fɔ tek kia ɔf yu yay gud gud wan!
Ki wɔd dɛn: Vishɔn, Ay, Si, Bren, Rɛtina, Ay Ɛgzam, Ay Protɛkshɔn, Ay Wɛlbɔdi
