Iwe unoona nyenyeredzi kana kupenya kwechiedza pane imwe nguva here? Hazvisi zvisinganzwisisiki kunyunyuta, uye nguva yakawanda iwe usina chaunotya nazvo. Kana iwe ukavhara maziso ako uye uchidziputira, iwe pamwe uchaona mavara uye kupenya kwechiedza. Zvisinei, kana ichiitika kakawanda, iwe unofanira kunge uchiona maziso ako achiongororwa chete kana ichi chiratidzo chomwe chinhu chakakomba.
Phosphenes
Nyeredzi uye kupenya iwe dzimwe nguva unoona kunonzi "phosphenes," kuonekwa kunoonekwa kunoona chiedza kunze kwekuti chiedza chichipinda muziso.
Izwi rokuti "phosphene" rinobva pamashoko echiGiriki phos (chiedza) uye phainein (kuratidza).
Iyo yakanyanya kufanana ne phosphenes inonzi phosphenes. Kubvisa maziso pavanenge vavharwa kunomutsa masero e retina . Iko tsvina yekushandura inoshandura uku kuisa mumifananidzo yakasiyana-siyana. Kufuridzira phosphenes kunogona kugara kwemashure mashomanana mushure mekubvisa kubvisa uye maziso akazarurwa, zvichibvumira phosphenes kuonekwa.
Isaac Newton akaratidza muenzaniso wepresssphene yakamanikidzwa nokunyatsomanikidza kudivi reziso kuti abudise chindori chemavara chechiedza kune rumwe rutivi. Imwe phosphene yakajairika ndeye "kuona nyeredzi." Dzimwe nguva munhu anokwanisa kuona kupenya kana mavara emwenje kubva pakunonoka, kuora kukuru, kuputika kwakasimba kumusoro, kana kuderedza ropa, sezvinonzi mushure mokumhanya zvakakurumidza.
Kunyange zvazvo kuona nyeredzi kazhinji kunowanzokonzerwa nekugadzirisa mafungiro, zvinogonawo kuguma nekugadzirisa kwemagetsi uye kushandiswa kwemagetsi emakona emakona maziso kana mamwe maonero eziso.
Vatsvakurudzi vakagadzira mapurogiramu anokurudzira phosphenes kubatsira kubatsirazve kuratidzwa kwevanhu vakarasikirwa nevakaona avo vakapofumadzwa muzviitiko. Electrodes iri kushandiswawo pachishongo chekubudisa phosphenes. Kutsvakurudza kwakaratidza kuti kana iyo inoona cortex ichikurudzirwa zvakakwana, phosphenes inobudiswa muchikamu chezasi chemaziso.
Valsalva Maneuver
A valsalva mufambiro ndechiito chekudzimisa zvakasimba kana uchichengeta muromo nemhino zvakavharwa. Iko kunokonzera kukumanikidza kumusoro wepamusoro uye musoro. Kazhinji, haisi chinhu chine utano chakanaka kuita, kunyange zvazvo kushandiswa kunoshandiswa kubatsira kubatsira kudzora dysfunctions.
Dzimwe nguva izvi zvinogona kukonzera kuti iwe uone nzvimbo dzechiedza dzinogonawo kuitika mushure mekunyunyuta kana kuoma. Izvi zvinogonawo kukonzerwa nokushungurudzika zvakanyanya pakusimudza chimwe chinhu chakanyanya kuoma kana kuedza kuva nechikwata chemuviri.
Postural kana Orthostatic Hypotension
Orthostatic hypotension inokonzerwa nekuerekana kwaderera ropa. Nzira dzemuviri dzemuviri dzinoedza kuchengetedza ropa uye ropa rinopfuurira kuuropi nguva dzose inokanda mukati, uye mwoyo inokurudzirwa kuwedzera zvakabuda.
Mishonga yeropa mumuviri wedu inoshandurawo, iyo inokanganisa kuwedzera kweropa. Kuchinja uku kunobata uropi, uye tinoona nyeredzi. Izvi zvinoitika kana tanga tagara pasi kwenguva yakareba uye simuka nokukurumidza.
Ophthalmic Migraines
Mamwe migraine ane mavara anoonekwa nevanhu, izvo zvinowanzotangira musoro. Vamwe vanhu havatombogoni kuora musoro asi kungoona maziso ari kuona. I-aura inogona kunge yakaita mavara e-prismatic, kupenya kwechiedza, uye dzimwe nguva nyeredzi.
Vanowanzopedza anenge maminitsi makumi maviri uye voenda. Kana musoro unotevera mazhenje, unonzi "migraine musoro." Kana izvi zvikapenya kana mitsetse yechiedza zvichiitika pasina bvudzi, inonzi "ophthalmic migraine," kana kuti migraine isina musoro.
Posterior Vitreous Detachment
Posterior vitreous detachment (PVD) yakajairika inowanzokonzerwa nekukwegura. Iyo vitreous, iyo inorwisana ne retina, iyo inodhaka-yakadai seyo inozadza pakati peziso. Inogadzirwa kakawanda nemvura, vitreous fluid inoita kuti ziso rive rakaita.
Apo patinenge tava kukwegura, kuumbwa kwe vitreous kushanduka uye kunowedzera kusimba.
Kushandurwa uku dzimwe nguva kunokonzera kuti vitreous itore pane retina. Kana simba rekudhonza richiva rakasimba zvakakwana, vitreous inogona kuparadzana kubva kune retina . Kana izvi zvichiitika, tinoona kupenya kwechiedza kana nyeredzi. Kazhinji nguva iyo PVD inoshungurudza asi haina kukuvadza. Zvisinei, inenge 5 kubva muzana yenguva, PVD inogona kukonzera kuchema kana kuchema.
Shoko Rinobva
Kunyange zvazvo kazhinji kusingabatsiri, kupenya kwechiedza nguva dzose kunogona kuva chiratidzo chekuyeuchidza chimwe chinhu chakakomba. Chirongwa chezveruzhinji chinodikanwa chichadikanwa kuti chigone chikonzero. Vanhu vakaberekwa bofu havaoni kamwe phosphenes. Zvisinei, kana iwe ukarasikirwa nehuono hwako semugumisiro wehutano kana kukuvara, kazhinji hauzogoni kurasikirwa nezvose zvinoratidzwa. Phosphenes inogona kubva mumativi akasiyana ehutarisiro, saka vanhu vaigona kuona kamwe vanogona kuramba vachigona kuona phosphenes.
> Kwakabva:
> Kahawita S, Simon S, Gilhotra J. Flashes uye mafotasvi - nzira inoshanda yekuongorora nekutarisa . Aust Fam Physician. 2014 Apr; 43 (4): 201-3.