Wetin na yu vishɔn? Lɛ wi tɔk bɔt am ditayli!

Aw yu de si di wɔl? Aw yu no di tin dɛn we de arawnd yu, di pipul dɛn, di fayn fayn kɔlɔ dɛn, ɔl dis? di men rizin fכ dis na wan amazing prכsεs we wi prεsכs yay dεm εn bren de du tכgeda, we dεn kכl "Vision" . Dis na sɔntin we rili kɔmpleks ɛn impɔtant pas fɔ jɔs si. So tide wi go tɔk bɔt dis vishɔn insay wan simpul we, insay wan we we yu go ɔndastand.

Wetin na vishɔn? Fɔ tɔk am simpul wan...

Fɔ tɔk am simpul wan, vishɔn na di we aw yu yay ɛn yu bren de wok togɛda fɔ mek pikchɔ we yu de yuz layt we de kɔmɔt frɔm di tin dɛn we de rawnd yu. Na wan pan wi fayv men sɛns dɛn. Bɔku pipul dɛn kin ɔndastand di wɔl tru vishɔn. Imajin aw wi layf go difrɛn if i nɔ bin de!

Aw wi yay de wok? Wan wɔndaful we aw dɛn de du tin!

di prכsεs fכ si de bigin we yu yay dεn no layt εn kכnvכlt am to nεv signal dεm. Dɔn dɛn signal ya kin travul tru yu optik nɛv dɛn to yu bren. Di bren kin gɛt dɛn sayn dɛn ya, i kin ɛksplen dɛn, ɛn mek di pikchɔ we yu de si. Dis kin apin kwik kwik wan, bɔku tɛm insay di sɛkɔn.

Yu tink se di yay dɛn tan lɛk kamɛra?

Yɛs, bɔku tɛm wi kin kɔmpia wi yay to kamɛra. Bɔt fɔ tru, na di ɔda we. Kamɛra na teknɔlɔji we dɛn mek lɛk mɔtalman yay. Imajin se, kamɛra gɛt lens. Dis na wetin de gɛda layt ɛn dayrɛkt am to wan spɛshal sɛns we de insay di kamɛra. Da sɛns de kin chenj di layt to ilɛktrik signal. Dɔn, wan smɔl kɔmpyuta we de insay di kamɛra de prosɛs da signal de fɔ mek i bi pikchɔ. Yu kin ajɔst di we aw kamɛra de pe atɛnshɔn, ɛn yu kin kɔntrol ɔmɔs layt dɛn kin alaw fɔ kam insay.Yu yay gɛt lens bak . Dɛn tin ya kin gɛda layt ɛn dayrɛkt am to di retina we de insay di yay. Dis retina tan lɛk di sɛns we de insay da kamɛra de, bɔt i dɔn go bifo pasmak ɛn i kɔmpleks. di layt we de fכl pan di rεtina de kכnvכlt to nεv signal dεm εn sεnd to di bren. di spεshal abiliti dεm fכ dεn kεmεra dεm, dat na `fokus` εn kכntrol layt, כl dis de du כtomatik bay yu yay. Di blak ring na yu yay ( di pupil ) de dilayt ɔ kɔnstrikt fɔ kɔntrol di layt we de go insay di yay. כlso, di mכsul dεm we de insay di yay de chenj di shep fכ di lεns, we de mek `fכkus` so dat yu go si tin klia wan na difrεn distans.

Wetin na di retina? Wetin kin apin de?

Yu retina na wan kayn sɛl we rili spɛshal, we rili sɛnsitiv. Wi kin kɔl dɛn foto-rɛsɛptɔ ya , we min "sɛl dɛn we de gɛt layt." We layt fɔdɔm pan dɛn sɛl ya, kemikal ɛn ilɛktrik riakshɔn kin apin insay dɛn. na so dεn sεl dεm ya de kכd layt to nεv signal dεm. Tu men kayn foto-rɛsɛptɔ dɛn de:

• Rod sɛl dɛn (`Rod dɛn`): .Dɛn tin ya kin no mɔ we di layt de chenj. Na dɛn sɛl ya de ɛp yu fɔ si tin dɛn na dak ples ɛn we layt nɔ de shayn.
• Kכn dεm: dεn sεl dεm ya kin sεnsitiv mכr. Dɛn kin ebul fɔ no fayn fayn tin dɛn ɛn no difrɛn kɔlɔ dɛn.

afta dis layt dכn kכnvכlt to nεv signal dεm, di rεtina de sεnd dεn signal dεm to yu optik nεv dεm.

Di Rol we di Optik Nɛv dɛn De Du

Yu optik nɛv dɛn tan lɛk data kebul dɛn. Dɛn kin kɛr signal frɔm di retina to difrɛn pat dɛn na di bren. dis signal dεm de travul along di optik nεv dεm εn de rich di pat dεm na di bren we de rispansabl fכ dikod εn כndastand di signal dεm.

Na di bren de disayd fɔ du di las tin!

Di las ɛn impɔtant tin kin apin insay yu bren. di bren de gεt di kכd signal dεm we de kam tru di optik nεv dεm, i de dεkכd dεm, εn afta dat i de yuz da infכmeshכn de fכ kכnstrכkt wan "imej" fכ wetin εvri yay de si.

Imajin, we yu rid dis sɛntɛns, di pat dɛn na yu bren we de ɛp yu fɔ ɔndastand langwej ɛn mɛmba tin dɛn bak de insay. Na so yu go ɔndastand dɛn wɔd ya, mɛmba wetin dɛn min, ɛn mɛmba di mɛmori dɛn we gɛt fɔ du wit dɛn.

Dat min se, i dipen pan wetin yu si, difrɛn pat dɛn na di bren kin wok togɛda fɔ ɔndastand da pikchɔ de gud gud wan.

Us sik dɛn kin afɛkt di we aw pɔsin de si?

Bikɔs di vishɔn involv sɔm pat ɛn strɔkchɔ dɛn na di bɔdi we de wok togɛda, difrɛn sik dɛn kin ambɔg dis prɔses. Sɔm tin kin afɛkt pas wan pat pan di vishɔnal sistɛm. Na sɔm kayn sik wae kin afɛkt yu yay:

• Ay sik dɛn : Fɔ ɛgzampul, katarakt ɛn glaukoma .
• Sik dɛm wae gɛt fɔ du wit di retina ɛn optik nɛv dɛm: Kɔndishɔn dɛm lɛk dayabitik retinopathy.
• Sik dɛm wae kin kam wit yu bren: Sɔm kayn strok ɔr bren tumbu kin afɛkt di we aw yu de si.

Difrɛns de bitwin "vishɔn" ɛn "say"?

Bɔku pipul dɛm, masta sabi pipul dɛm, ɛn ivin sayɛnsman dɛm, kin yuz di wɔd dɛm "vishɔn" ɛn "say" fɔ chenj dɛnsɛf. Bɔt dɛn nɔ min se na di sem tin. Yu kin yuz yu visual abiliti ivin if yu nɔ rili ebul fɔ si sɔntin (fɔ ɛgzampul, bay we yu mek pikchɔ dɛn na yu maynd). Dɔn bak, sɔm tin dɛn de we kin apin na yu bren we kin afɛkt di we aw yu bren kin ebul fɔ ɛksplen wetin yu de si wit yu yay. Fɔ ɛksplen dis smɔl mɔ: Fɔ si na jɔs tin we pɔsin kin ebul fɔ du na in bɔdi. Dat min se yu yay de no layt, chenj am to ilɛktrik ɛn kemikal signal, ɛn sɛn am to yu bren. Fɔ si tin, yu nid fɔ ebul fɔ ɛksplen di sayn dɛn we de kɔmɔt na yu yay. If yu nɔ ɔndastand da we de, di sayn dɛn we yu yay de sɛn to yu bren nɔ gɛt wan yus. Pan ɔl we i kin tan lɛk se i strenj fɔ tink bɔt dɛn tu tin ya as difrɛn, sɔm tin dɛn de we kin afɛkt di we aw pɔsin de si ɛn nɔ kin ambɔg di we aw pɔsin de si. Wan ɛgzampul na wan sik we dɛn kɔl Visual Agnosia . Pipul wae gɛt dis sik kin si fayn fayn wan, bɔt dɛn bren nɔr kin ebul fɔ mek sɛns pan wetin dɛn de si ɔltɛm. כda spεshal εgzampl fכ dis na di inability fכ no fכs (`Prosopagnosia` כ `Face Blindness`) . Pan ɔl we dɛn pipul ya kin si fes, dɛn nɔ kin ebul fɔ no udat dɛn bi. Wan tin we rili bad, nɔto so?

Aw wi go protɛkt wi valyu yay? Mek shɔ se yu du dɛn tin ya!

Bɔku tin dɛn de we yu kin du fɔ mek yu kɔntinyu fɔ si ɛn protɛkt yu yay. Sɔm pan di tin dɛn we impɔtant pas ɔl na:

• Di impɔtant tin fɔ du ɛgzam na dɛn yay ɔltɛm: Ɔlman, ivin di wan dɛn we gɛt nɔmal vishɔn (`20/20 vishɔn`), fɔ de chɛk dɛn yay ɔltɛm. If yu chɛk yu yay, yu kin no prɔblɛm dɛn we yu nɔ no ɔ ivin si. Rifraktiv mistek , lεk we yu de si nia (`Myopia`) כ we yu de si fa (`Hyperopia`), kin mek yu nכ de si fayn fayn wan. Sɔntɛm yu nɔ go notis am fɔs. If yu chɛk yu yay, yu go ebul fɔ no dɛn prɔblɛm ya bifo yu ivin notis dɛn.

• I impɔtant fɔ protɛkt yu yay: I impɔtant fɔ protɛkt yu yay pan tin dɛn we de mek yu gɛt prɔblɛm. Sefty gogl ɔ glas , fes mask ɔ shild kin ɛp wit dis. Sanglas na fayn we bak fɔ protɛkt yu yay. Dɛn kin protɛkt yu yay frɔm UV rayt we de ambɔg yu.

• Tink bak bɔt aw fɔ it: Fɔ mek yu yay wok fayn, sɔm vaytamɛn dɛnTayp ɛn nyutriɛnt dɛn nid fɔ de. If yu gɛt kwɛstyɔn bɔt dis, yu kin go to yu famili dɔktɔ ɔ dɔktɔ we de mɛn yu yay.

• Nɔ fɔgɛt fɔ du tin wit yu bɔdi: Di ​​wɛlbɔdi we yu yay gɛt gɛt fɔ du wit di wɛlbɔdi na yu wan ol bɔdi. We yu de du yu bɔdi ɔltɛm, dat kin ɛp fɔ mek yu yay (ɛn di ɔda pat dɛn na yu bɔdi) gɛt wɛlbɔdi.

• Nɔ smok ɛn yuz tabak: If yu smok, vap, ɛn it tabak, dat kin ambɔg yu wɛlbɔdi ɛn yu yay bad bad wan. If yu lɛf fɔ yuz tabak (ɔ yu nɔ ɛva bigin fɔ smok) kin mek big difrɛns.

• If yu gɛt chenj dɛn we yu de si wantɛm wantɛm, lɛk we yu nɔ de si fayn, go to dɔktɔ wantɛm wantɛm! Dɛn tin ya kin bi di fɔs sayn dɛm fɔ se yu gɛt siriɔs prɔblɛm. Wantɛm wantɛm, we pɔsin nɔ bin de tink se i go si na rizin fɔ go to dɔktɔ. If yu gɛt wan sik we kin mek yu nɔ ebul fɔ si ɔ chenj wantɛm wantɛm, yu dɔktɔ ɔ dɔktɔ we de mɛn yu yay go tɛl yu ustɛm fɔ go to dɔktɔ.

Mɛsej we dɛn kin kɛr go na os

Fɔ bɔku pipul dɛn, fɔ si na di impɔtant sɛns we dɛn kin yuz ɛvride. Pan ɔl we i kin tan lɛk se na simpul tin fɔ du, fɔ tru, na wan pan di tin dɛn we kin rili kɔmpleks na yu bɔdi. Fɔ mek yu vishɔn wok fayn fayn wan, ɔl di pat dɛn na yu yay, di retina, di optik nɛv dɛn, ɛn di bren, ɔl nid fɔ wok togɛda fayn fayn wan.

Bɔku tin dɛn de we yu go du fɔ protɛkt yu valyu yay. Dɔn yu kin pe atɛnshɔn pan di tin dɛn we yu want fɔ si, pas fɔ wɔri bɔt wetin yu nɔ ebul fɔ si. So, nɔ fɔgɛt fɔ tek kia ɔf yu yay gud gud wan!

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` Vishɔn, Aysayt, Rɛtina, Ɔptik Nɛv, Ay Hɛlth