Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
TRANSSCLERAL FLOW OF AQUEOUS-HUMOR - AN IN-VITRO EXPERIMENT
Autore:
AYYALA RS; OBRIEN CO; GRIERSON I; MALTBY P;
Indirizzi:
UNIV EYE ASSOCIATES INC,TRYGVE GUNDERSON EYE CTR,720 HARRISON AVE,10TH FLOOR BOSTON MA 02118 ROYAL LIVERPOOL UNIV HOSP,ST PAULS EYE UNIT LIVERPOOL MERSEYSIDE ENGLAND ROYAL LIVERPOOL UNIV HOSP,DEPT NUCL MED LIVERPOOL MERSEYSIDE ENGLAND
Titolo Testata:
Ophthalmic surgery
fascicolo: 1, volume: 27, anno: 1996,
pagine: 66 - 69
SICI:
0022-023X(1996)27:1<66:TFOA-A>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
DRAINAGE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
7
Recensione:
Indirizzi per estratti:
Citazione:
R.S. Ayyala et al., "TRANSSCLERAL FLOW OF AQUEOUS-HUMOR - AN IN-VITRO EXPERIMENT", Ophthalmic surgery, 27(1), 1996, pp. 66-69

Abstract

BACKGROUND AND OBJECTIVE: The minimal scleral flap thickness to ensure transscleral flow following a trabeculectomy has never been determined. The present study was designed to determine, in vitro, the critical scleral flap thickness that allows transscleral flow. MATERIALS AND METHODS: The apparatus consisted of two horizontal glass chambers (A and B) connected to each other by a customized scleral disc holder. High-pressure chamber A (at 25 mm Hg) was filled with sodium pertechnetate (Tc-99m) labeled normal saline and low-pressure chamber B (at 5 mm Hg) with normal saline. Transscleral flow of labeled normal saline fromhigh-pressure chamber A via varying thickness scleral discs to low-pressure chamber B was observed over 16 hours using a gamma camera. Computer analysis was performed on the obtained images. RESULTS: Transscleral flow of labeled saline was observed only with scleral discs 0.5 mmthick or less. CONCLUSIONS: If the findings hold true for the in vivosituation, aqueous humor may reach the subconjunctival space following trabeculectomy via the transscleral route, provided scleral flap thickness is less than 0.5 mm. In addition, normal uveoscleral aqueous outflow may occur across sclera less than 0.5 mm thick, e.g., posterior to extraocular muscle insertions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 04:53:01