Astigmatism

Astigmatism bu udiri njehie nke anya. Njehie na-emegharị ahụ na-eme ka ọhụụ ghara ịhụ anya. Ha bụ ihe kachasị na-eme mmadụ jiri aga hụ onye ọrụ anya ya.

Typesdị ụdị njehie Refractive ndị ọzọ bụ:

• Ilepụ anya n'ihu
• Ọhụụ

Ndị mmadụ nwere ike ịhụ n'ihi na ihu nke anya (cornea) nwere ike ehulata (Refract) ìhè ma lekwasị ya anya na retina. Nke a bụ azụ n'ime elu nke anya.

Ọ bụrụ na ụzarị ọkụ anaghị elekwasị anya na retina, foto ndị ị na-ahụ nwere ike ghara ịma.

Na astigmatism, cornea na-atụgharị n'ụzọ na-adịghị mma. Akụkụ a na-eme ka ọhụụ ghara ilekwasị anya.

Ihe kpatara astigmatism amaghi. A na-ahụkarị ya site na ọmụmụ. Astigmatism na - aputakarị na ọhụhụ ma ọ bụ elepụ anya n'ihu. Ọ bụrụ na astigmatism na-akawanye njọ, ọ nwere ike ịbụ ihe ịrịba ama nke keratoconus.

Astigmatism bụ ihe a na-ahụkarị. Ọ na - eme mgbe ụfọdụ mgbe ụdị ụfọdụ nke ịwa ahụ anya, dị ka ịwa ahụ.

Astigmatism na - eme ka o sie ike ihu nkowa oma, nso ma obu nke di anya.

Astigmatism na-adị mfe nyocha site na nyocha anya ọkọlọtọ na nnwale refraction. Achọghị ule pụrụ iche n'ọtụtụ ọnọdụ.

Childrenmụaka ma ọ bụ ndị toro eto na-enweghị ike ịzaghachi ule nyocha ọhụụ nwere ike ịme ka atụgharị ha site na ule nke na-eji ìhè gosipụtara (retinoscopy).

Mkpa astigmatism nwere ike ọ gaghị adị mkpa idozi.

Iko anya ma ọ bụ anya m ga-edozi astigmatism, mana agwọghị ya.

Surgerywa ahụ laser nwere ike inye aka ịgbanwe ọdịdị nke ihu cornea iji kpochapụ astigmatism, yana ịbịaru nso ma ọ bụ elepụ anya n'ihu.

Astigmatism nwere ike ịgbanwe na oge, na-achọ iko ọhụụ ma ọ bụ anya m. Ndozi ọhụhụ laser nwere ike iwepụ ma ọ bụ belata astigmatism.

Childrenmụaka, astigmatism a na-edozighi na naanị otu anya nwere ike ime amblyopia.

Kpọọ onye na-ahụ maka ahụike gị ma ọ bụ ophthalmologist ma ọ bụrụ na nsogbu ọhụụ na-akawanye njọ, ma ọ bụ ghara imeziwanye site na iko ma ọ bụ anya m.

• Nlere anya acuity

Chiu B, Nwa okorobịa JA. Ndozi nke njehie Refractive. Na: Yanoff M, Duker JS, eds. Ọrịa. Nke 5. Philadelphia, PA: Elsevier; 2019: isi 2.4.

Jain S, nke siri ike DR, Ang LPK, Azar DT. Mwepu nke elu laser: photorefractive keratectomy (PRK), laser subepithelial Keratomileusis (LASEK), na Epi-LASIK. Na: Yanoff M, Duker JS, eds. Ọrịa. Nke 5. Philadelphia, PA: Elsevier; 2019: isi nke 3.3.

Olitsky SE, Marsh JD. Abnormalities nke refraction na ulo. Na: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Akwụkwọ ọgụgụ nke Ọrịa edimụaka. 21nke. Philadelphia, PA: Elsevier; 2020: isi 638.