Kodi nthawi zina mumawona nyenyezi kapena kuwala? Sizodandaula kawirikawiri, ndipo nthawi zambiri mulibe nkhawa. Mukatseka maso anu ndi kuwasakaniza, mwinamwake mudzawona mawanga ndi kuwala kwa kuwala. Komabe, ngati izi zikuchitika kawirikawiri, muyenera kuyang'anitsitsa maso anu ngati zili chizindikiro cha chinachake chachikulu.
Phosphenes
Nyenyezi ndi kuwala zomwe nthawi zina mumaziwona zimatchedwa "phosphenes," zomwe zimawonekera powona kuwala popanda kuwala kumalowa.
Mawu akuti "phosphene" amachokera ku mawu achigriki phos (kuwala) ndi phainein (kusonyeza).
Phosphenes yowonjezereka ndizovuta za phosphenes. Kutsegula maso pamene kutsekedwa kumachititsa maselo a retina . Mitsempha ya optic imatanthauzira kupanikizika uku ku mafano osiyanasiyana. Phosphenes yachangu imatha kukhala kwa mphindi zowerengeka pokhapokha kupuma kumasiya ndipo maso amatseguka, kuti mafinsa awonekere.
Isaac Newton anatsanzira chitsanzo cha phosphene yowonjezera mwa kuyatsa pang'onopang'ono kumbali ya diso kuti awulule mphete yamitundu yosiyanasiyana kumbali inayo. Wina wamba wa phosphene ndi "kuona nyenyezi." Nthawi zina munthu amatha kuwona kuwala kapena kuwala kochokera ku sneeze, chifuwa chachikulu, kupweteka kumutu, kapena kuthamanga kwa magazi, monga atayimirira mofulumira kwambiri.
Ngakhale kuti nyenyezi zimaona kuti zimangokhala zochititsa chidwi, zingathenso kugwiritsira ntchito makina osokoneza bongo komanso maonekedwe ena.
Ochita kafukufuku apanga mapulogalamu omwe amachititsa phosphenes kuthandizira kubwezeretsa masomphenya kwa anthu omwe ataya masomphenya awo akhungu pa ngozi. Ma electrodes akugwiritsidwanso ntchito pa scalp kuti apange phosphenes. Kafukufuku wasonyeza kuti pamene cortex yowonongeka imakopeka mokwanira, phosphenes imapangidwa m'munsi mwa masomphenya.
Valsalva Maneuver
Kuwongolera kwa valsalva ndikutulutsa mpweya mokakamiza pamene kutseka pakamwa ndi mphuno zimatsekedwa. Zimapangitsa kupanikizika pa thupi lapamwamba ndi mutu. Kawirikawiri, si chinthu chabwino kwambiri kuchita, ngakhale kuti ntchitoyo imagwiritsidwa ntchito kuthandiza kuthana ndi matenda a mtima.
Nthawi zina kupanikizika kumeneku kungakupangitseni kuti muwone malo omwe kuwalako kamatha kuchitika pambuyo poti sneeze kapena chifuwa chovuta. Izi zingayambitsenso chifukwa chokakamizika kwambiri pakubweza chinachake cholemetsa kapena kuyesera kukhala ndi thupi.
Kutsindika kwa Postural kapena Orthostatic Hypotension
Matenda a Orthostatic amayamba chifukwa chadzidzidzi kutaya magazi. Njira za thupi zomwe zimayesa kuthamanga kwa magazi ndi kuthamanga kwa magazi mpaka ubongo umangokhalira kukankha, ndipo mtima umalimbikitsidwa kuti uwonjezere kuchulukitsa.
Mitsempha ya magazi m'thupi lathu imasintha, yomwe imakhudza kuthamanga kwa magazi. Kusintha uku kumakhudza ubongo, ndipo timawona nyenyezi. Izi zimachitika tikakhala pansi kwa nthawi yayitali ndikuimirira mofulumira.
Ophthalmic Migraines
Mitundu ina imakhala ndi aura yomwe anthu amawona, yomwe nthawi zambiri imayambitsanso mutu. Anthu ena samatha kupweteka mutu koma amangowona ma visual aura. The aura ikhoza kukhala maonekedwe a mitundu yambiri, kuwala kwa kuwala, ndipo nthawi zina nyenyezi.
Nthawi zambiri amatha mphindi 20 ndikupita. Ngati mutu umatsatira kuwala, amatchedwa "mutu wa mutu wa migraine." Ngati izi zikuwalira kapena mizere ya kuwala imachitika popanda mutu, imatchedwa "ophthalmic migraine," kapena migraine popanda kupweteka mutu.
Kutumiza kwa Vitreous Posterior
Chitetezo chapafupi chotchedwa vitreous (PVD) chimakhala chofala chifukwa chokalamba. Vitreous, yomwe imatsutsana ndi retina, ndiyo mankhwala odzola odzola omwe amadzaza pakati pa diso. Amapangidwanso madzi, vitreous madzi amachititsa diso kukhala mawonekedwe ake.
Pamene tikulamba, mawonekedwe a vitreous akusintha ndipo sakhala ochepa.
Kusintha uku nthawi zina kumapangitsa vitreous kukoka pa retina. Ngati mphamvu yokoka imakhala yolimba, vitreous imatha kusiyanitsa ndi retina . Izi zikachitika, timawona kuwala kwa nyenyezi kapena nyenyezi. Nthawi zambiri PVD ndi yokhumudwitsa koma yopanda phindu. Komabe, pafupifupi 5 peresenti ya nthawiyi, PVD ikhoza kuyambitsa kuchepetsa kapena kubwezera.
Mawu Ochokera
Ngakhale kuti nthawi zambiri sichimavulaza, kuunika kowonjezereka kungakhale chenjezo la chinthu china choopsa kwambiri. Kufufuza kozama kwa maso kudzafunikira kudziwa cholinga. Anthu omwe amabadwa akhungu samawona phosphenes. Komabe, ngati mutataya masomphenya anu chifukwa cha matenda kapena kuvulala, simungathe kutaya ntchito yonse. Phosphenes ikhoza kumayambira mbali zosiyanasiyana za mawonekedwe, kotero anthu amene amatha kuwona akhoza kukhala ndi luso lotha kuona phosphenes.
> Chitsime:
> Kahawita S, Simon S, Gilhotra J. Flashes ndi maulendo - njira yowunika ndikuyang'anira . Aust Fam Physician. 2014 Apr; 43 (4): 201-3.