Ihe nyocha

Electroretinography bụ ule iji tụọ nzaghachi eletrik nke mkpụrụ ndụ na-enwu ọkụ, nke a na-akpọ mkpara na cones. Mkpụrụ ndụ ndị a bụ akụkụ nke retina (akụkụ azụ nke anya).

Mgbe ị nọdụrụ ọdụ, onye nlekọta ahụike na-etinye nsụba n'anya gị, n'ihi ya ị gaghị enwe ahụ erughị ala n'oge ule ahụ. A na-ejikwa obere ngwaọrụ akpọrọ speculum emeghe anya gị. A na-etinye ihe mmetụta eletrik (electrode) na anya ọ bụla.

Igwe electrodes na-arụ ọrụ eletriki nke retina na nzaghachi nye ọkụ. Ọkụ na-enwu, nzaghachi eletrik na-esikwa na electrode gaa na ihuenyo yiri TV, ebe enwere ike ịlele ya ma dekọọ ya. Usoro mmeghachi omume nkịtị nwere ebili mmiri a na-akpọ A na B.

Onye na-eweta ahụ ga - agụ ihe a na - enwu n'ime ime ụlọ were ya ọzọkwa n'ọchịchịrị, ka ọ hapụchara nkeji iri abụọ ka anya gị gbanwee.

Enweghị nkwadebe pụrụ iche dị mkpa maka ule a.

Ihe nyocha ndị dị n’anya gị nwere ike ịmacha gị. Nnwale ahụ na-ewe ihe dị ka 1 awa iji mee.

A na-eme nyocha a iji chọpụta ọrịa nke retina. Ọ bara uru maka ịchọpụta ma ịwa ahụ ịwa ahụ.

Nsonaazụ nnwale ga-egosi usoro A na B nke kwesịrị ekwesị na nzaghachi na ọkụ ọ bụla.

Ọnọdụ ndị a nwere ike ibute nsonaazụ na-adịghị mma:

• Arteriosclerosis nwere mmebi nke retina
• Enkpuo ìsì n'abalị
• Congenital retinoschisis (kewara nke retinal n'ígwé)
• Nnukwu cell arteritis
• Ọgwụ (chloroquine, hydroxychloroquine)
• Mucopolysaccharidosis
• Retinal detachment
• Rod-cone dystrophy (retinitis pigmentosa)
• Nsogbu
• Vitamin A erughi

The cornea nwere ike ịnweta nwa oge ọkọ n'elu ala site na electrode. Ma ọ bụghị ya, enweghị nsogbu ọ bụla na usoro a.

Ikwesighi ihicha anya gi ruo otu awa mgbe elechara ule, n'ihi na nke a nwere ike imebi cornea. Onye na-eweta gị ga - agwa gị okwu gbasara nsonaazụ ule ahụ na ihe ọ pụtara maka gị.

NJỌ; Nyocha Electrophysiologic

• Kpọtụrụ lens electrode na anya

Baloh RW, Jen JC. Neuro-ophthalmology. Na: Goldman L, Schafer AI, eds. Ọgwụ Goldman-Cecil. Nke 26th. Philadelphia, PA: Elsevier; 2020: isi 396.

Miyake Y, Shinoda K. Clinical electrophysiology. Na: Schachat AP, Sadda SVR, Hinton DR, Wilkinson CP, Wiedemann P, eds. Ryan's Retina. Nke isii. Philadelphia, PA: Elsevier; 2018: isi 10.

Reichel E, Klein K. Retinal electrophysiology. Na: Yanoff M, Duker JS, eds. Ọrịa. Nke 5. Philadelphia, PA: Elsevier; 2019: isi 6.9.