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Titolo:
Fourier analysis of irregular astigmatism after trabeculectomy
Autore:
Hayashi, K; Hayashi, H; Oshika, T; Hayashi, F;
Indirizzi:
Hayashi Eye Hosp, Hakata Ku, Fukuoka 812, Japan Hayashi Eye Hosp FukuokaJapan 812 e Hosp, Hakata Ku, Fukuoka 812, Japan Fukuoka Univ, Sch Med, Dept Ophthalmol, Fukuoka 81401, Japan Fukuoka UnivFukuoka Japan 81401 , Dept Ophthalmol, Fukuoka 81401, Japan Univ Tokyo, Sch Med, Dept Ophthalmol, Tokyo 113, Japan Univ Tokyo Tokyo Japan 113 o, Sch Med, Dept Ophthalmol, Tokyo 113, Japan
Titolo Testata:
OPHTHALMIC SURGERY AND LASERS
fascicolo: 2, volume: 31, anno: 2000,
pagine: 94 - 99
SICI:
0022-023X(200003/04)31:2<94:FAOIAA>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
CORNEAL TOPOGRAPHY DATA; VIDEOKERATOGRAPHY DATA; INTRAOCULAR-PRESSURE; ADJUNCTIVE MITOMYCIN; GLAUCOMA; SURGERY; IMPROVEMENT; REDUCTION; INDEXES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Hayashi, K Hayashi Eye Hosp, Hakata Ku, 4-7 13 Hakataekimae, Fukuoka 812, Japan Hayashi Eye Hosp 4-7 13 Hakataekimae Fukuoka Japan 812 , Japan
Citazione:
K. Hayashi et al., "Fourier analysis of irregular astigmatism after trabeculectomy", OPHTHAL SUR, 31(2), 2000, pp. 94-99

Abstract

OBJECTIVE: To examine irregular astigmatism following trabeculectomy usingFourier analysis of videokeratography data. PATIENTS AND METHODS: Forty eyes of 40 glaucoma patients, undergoing primary trabeculectomy, underwent videokeratographic examinations preoperatively, and at 2 weeks and 1, 3, 6, and 12 months postoperatively. The dioptric data of the central cornea were decomposed into spherical, regular astigmatic, and irregular astigmatic (decentration and higher-order irregularity) components using Fourier analysis. RESULTS: The mean spherical equivalent did not change throughout the observation period. The regular astigmatic component fi om 2 weeks to 6 months post- operatively was greater than the preoperative diopter, but the increase tvas not significant, In contrast, the decentration component increased significantly after surgery, but returned to the preoperative level by 12 months. The higher-order irregularity component also presented a transient increase postoperatively. CONCLUSIONS: Irregular astigmatism, particularly decentration component, increases significantly after trabeculectomy, but returns re the preoperative level 12 months after surgery.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 13:31:16