Astigmatism

Astigmatism imhando yekukanganisa kukanganisa kweziso. Reflective zvikanganiso zvinokonzeresa kuona. Ndicho chikonzero chakajairika nei munhu achienda kunoona nyanzvi yemaziso.

Dzimwe mhando dzekukanganisa kukanganisa ndidzo:

• Kufanoona zviri kure
• Nearsightedness

Vanhu vanokwanisa kuona nekuti chikamu chepamberi cheziso (cornea) chinokwanisa kukotamisa (kubhenekera) mwenje uye kuutarisa kune iro retina. Uku ndiko kumashure mukati pechiso cheziso.

Kana mwenje yechiedza isina kunyatso tarisa pane iyo retina, iyo mifananidzo yaunoona inogona kunge isina kujeka.

Ne astigmatism, iyo cornea yakajairika zvisingaiti. Iyi curve inokonzeresa kuti chiratidzo chive kunze kwekutarisa.

Chikonzero che astigmatism hachizivikanwe. Inowanzo kuve iripo kubva pakuzvarwa. Astigmatism inowanzoitika pamwe chete nekuona padyo kana kuona zviri kure. Kana astigmatism ikawedzera, chingave chiratidzo chekeratoconus.

Astigmatism yakajairika. Iyo dzimwe nguva inoitika mushure memamwe marudzi ekuvhiya kwemaziso, senge kuvhiya kwemaziso.

Astigmatism inoita kuti zviome kuona zvakanaka ruzivo, kungave padyo padyo kana kure.

Astigmatism inowanikwa nyore nyore neyakajairwa bvunzo bvunzo pamwe nekwenenzverwa bvunzo. Special bvunzo hadzidiwe muzviitiko zvakawanda.

Vana kana vanhu vakuru vasingakwanise kupindura kune yakajairika refraction bvunzo vanogona kuve nekwiriso yavo kuyerwa nemuyedzo unoshandisa kuratidzwa mwenje (retinoscopy).

Nyoro astigmatism inogona kunge isingade kugadziriswa.

Magirazi kana malenzi ekururamisa achagadzirisa astigmatism, asi usazvirape.

Kuvhiya kweLaser kunogona kubatsira kuchinja chimiro cheiyo cornea pamusoro kubvisa astigmatism, pamwe nekuona kana kuona kure kure.

Astigmatism inogona kuchinja nenguva, ichida magirazi matsva kana malensi ekutaurirana. Kugadziriswa kwemaonero eLaser kunogona kazhinji kubvisa, kana kudzora zvakanyanya astigmatism.

Muvana, kusagadziriswa astigmatism mune rimwe chete ziso kunogona kukonzera amblyopia.

Fonera wako mupi wezvehutano kana ophthalmologist kana matambudziko ekuona achinyanya, kana kusavandudza nemagirazi kana malensi ekutaurirana.

• Kuona acuity bvunzo

Chiu B, Mudiki JA. Kugadziriswa kwekukanganisa kukanganisa. Mune: Yanoff M, Duker JS, eds. Ophthalmology. 5 ed. Philadelphia, PA: Elsevier; 2019: chitsiko 2.4.

Jain S, Yakaomarara DR, Ang LPK, Azar DT. Excimer laser pamusoro ablation: photorefractive keratectomy (PRK), laser subepithelial Keratomileusis (LASEK), uye Epi-LASIK. Mune: Yanoff M, Duker JS, eds. Ophthalmology. 5 ed. Philadelphia, PA: Elsevier; 2019: chitsiko 3.3.

Olitsky SE, Marsh JD. Kusagadzikana kwekubvisa uye pekugara. Mune: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Chinyorwa chePediatrics. 21st ed. Philadelphia, PA: Elsevier; 2020: chitsiko 638.