Izizathu zeZiphumo zoVavanyo ezingavumelekanga
Uvavanyo lokuhlola indawo yindlela yokulinganisa intsimi yakho. Intsimi yakho ebonakalayo yinkcazo yendlela ongayibona ngayo kwicala ngalinye ngeli gama ugxininise amehlo akho kwindawo ephambili ( umbono wembonakalo ). Ukuqhuba uvavanyo lwentsimi ebonakalayo kuthiwa yi-perimetry. Uvavanyo lwentsimi ebonakalayo lunceda ukuhlukanisa iingxaki ngombono wembambano ukusuka kwiingxaki zombono ophakathi.
Ugqirha wakho wezilanga unokuyilungisa uvavanyo lwentsimi ebonakalayo njengenxalenye yoviwo lwamehlo olwenziwe ngonyaka.
Kuthiwani Ngeziphumo?
Kwiimeko ezininzi, iziphumo zakho ezibonakalayo ziya kuba ziqhelekileyo. Ukuba iziphumo zakho zokuvavanya ziqhelekile, umbono wakho wembonakalo usebenza kakuhle. Nangona kunjalo, ukuba unemiphumo engavumelekanga, kunokubakho ingxaki kwinkqubo yakho ye-nervous central okanye ingxaki engaziwayo. Kwakhona, ukuhlolwa kwintsimi ebonakalayo kunokufumanisa izifo zesifo se-retinal (central retard), ezinye izimo zejwabu ze-ptosis (i-fooping eyelid), i-optic nesifo sesifo kunye nezifo ezichaphazela iindlela ezibonakalayo ngaphakathi kwengqondo. Iindlela ezibonakalayo zithwala ulwazi ukusuka kwiso kwiindawo ezibonakalayo zengqondo, apho ulwazi lwenziwa khona kumbono. Isiphumo esingaqhelekanga sokuvavanywa kwintsimi yeso sizathu sokukhathazeka kwaye ngokuqhelekileyo kuya kubangela ukuvavanya okungakumbi ukufumanisa ingxaki.
Izizathu ezibonakalayo zembonakalo yolu vavanyo oluqhelekileyo lubandakanya oku kulandelayo:
- Glaucoma
- Sikashukela
- Igazi elonyukayo
- Isifo sokugubhuka
- Optic glioma
- Hyperthyroidism
- Izifo zengcebele
- Iingxaki zesistim seentloko, ezifana nesifo esiqhoqhaqhayisa esinye sezixhobo ezibonakalayo zobuchopho bakho
- Stroke
Ingaba ibiza malini?
Uvavanyo lwentsimi ebonakalayo ngokubanzi lufunyaniswa nezicwangciso ze-inshorensi zempilo, nangona uvavanyo lunokuthi lugqithiselwe kwithuba elilodwa ngonyaka ngonyaka we-glaucoma.
Ummangali we-glaucoma uyigulane eneempawu kunye nempawu eziza kukhula zibe yi-glaucoma kwikamva. Kuba abantu sele bafumene i-glaucoma, izicwangciso ze-inshorensi zivame ukuvumela iimvavanyo ezimbini zengingqi ngonyaka.
Ingaba ithatha ixesha elingakanani?
Zininzi iindlela ezisetyenziswe oogqirha ukuvavanya intsimi ebonakalayo. Uninzi lweemvavanyo zentsimi ebonakalayo ludinga imizuzu embalwa kwizigulane eziphilileyo. Kufuneka ixesha elingakumbi xa uvavanya ukugula okanye izigulane ezigugile. Ukuvavanywa kwintsimi yokubonakalayo kunokuba nzima nakwixesha elide kubantwana abancinci.
Uvavanyo olusisiseko, olusisiseko lwentsimi ebonakalayo luyenziwa ngokuba nesigulane sijonge phambili kwaye sibone iminwe eboniswe ngugqirha ukusuka kwicala ngalinye. Nangona kunjalo, iinkalo ezibonakalayo zilandelwa yikhomputha kwiofisi ye-optometrist okanye ye-ophthalmologist. Kuvavanyo lwekhompyutha, iliso elinye lifihliwe kwaye i-chin isetyenziswe kwi-chin rest. Isigulane sibambe iqhosha kwaye xa kubonakala isibonakaliso sokukhanya, uqhuba iqhosha. Inkqubo ikhiqiza imephu yekhompyutheni yembonakalo yesigulane.
Ungethuki ukuba ugqirha wakho uphinda ukuvavanya uvavanyo lwakho lwezityalo eziliqela kangangoko ukuqinisekisa ukuqinisekiswa kwalo, njengokuba kukho ukuzithoba ekusebenzeni uvavanyo. Ngethuba lokuqala ugqirha wenza uvavanyo lwentsimi ebonakalayo, abanokungazi ukuba balindele ntoni, ngoko kungavumelekanga iziphumo.
Ukuphindaphinda ukuvavanya kuvame ukuvelisa iziphumo eziqhelekileyo.
Uvavanyo lweeMpawu zoLwazi kunye neGlaucoma
Uvavanyo olubonakalayo kwintsimi lisetyenziswe rhoqo ngabagqirha bamajoni ukuxilonga, ukugqiba ubunzima, kunye nokubeka i-glaucoma. Ugqirha wakho mhlawumbi uya kulandelwa uvavanyo lwentsimi ebonakalayo ngokukhawuleza ukuba i-glaucoma ikhunjulwe. Uvavanyo luya kuphonononga ukulahleka kombono wakho okubangelwa yi-glaucoma kwaye isebenzise idatha ukuqinisekisa ubunzima nokuqhubela phambili kwesi sifo. Ukuhlolwa kwintsimi yokubonakalayo kuya kwenziwa maxesha amaninzi kulo nyaka. Ukuphindaphinda uvavanyo kungabonakala kukuphindaphindiwe kwaye kungadingekile, kodwa iimvavanyo zemihlaba yembonakalo eziphindaphindiweyo ziyinxalenye ebalulekileyo yokujonga i-glaucoma yakho.
Ukuphinda ukuphinda uvivinye kaninzi kukunceda ugqirha lakho kwamehlo ukujonga ukuba utshintsho kwimbono yakho luyinyani, kwaye luya kuphucula ubuchule bakho bokuthatha uvavanyo.
Ukuvavanywa kwintsimi ebonakalayo kuyiluncedo kumgqirha wakho ukuxelela indlela ozibona ngayo ngoku kunye nendlela enokukwazi ngayo ukuyijonga kwixesha elizayo. Iziphumo zokuvavanya nazo zinceda ugqirha wakho ukuba anqume ukuba unyango lwakho lwangoku luyindlela engcono kakhulu yokonyango kuwe.
Umthombo:
I-Choplin, uNeil T kunye noRussel P. Edwards. Humphrey Field Analyzer. SLACK Incorporated, ngo-1995.