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001-es BibID:	BIBFORM081138
035-os BibID:	(PMID)31103453
Első szerző:	Barna Sándor (kutató orvos)
Cím:	Evaluation of the tear clearance rate by dacryoscintigraphy in patients with obstructive meibomian gland dysfunction / Sandor Barna, Ildiko Garai, Rudolf Gesztelyi, Adam Kemeny-Beke
Dátum:	2019
ISSN:	1367-0484
Megjegyzések:	Purpose: To measure tear clearance values in patients with meibomian gland dysfunction (MGD) with a dynamic nuclear medicine method, namely, dacryoscintigraphy (DSCI). Methods: Twenty-four MGD patients and 24 healthy volunteers were examined. During DSCI one drop of a solution with 100 MBq/mL99mTc sodium pertechnetate was instilled with a micropipette into the lacrimal lake of both eyes. Measurements were performed according to a dynamic data acquisition protocol, which resulted in summed DSCI images. Data were also evaluated separately in special regions of interest (ROI), and consecutive time activity curves were created. Tear clearance (T?) values were calculated based on the activity curves. In addition, tear osmolarity measurements, tear breakup time (tBUT), and Schirmer I (STI) tests were performed prior to DSCI examination. Results: The T? values were 29.91 ? 11.61 min in MGD patients and 6.26 ? 1.5 min in healthy controls. Tear osmolarity parameters were 308 ? 9.41 mOsm/L and 288.9 ? 6.4 mOsm/L, tBUT values were 5.54 ? 2.73 s and 11.4 ? 2.7 s, while the STI test values were 6.17 ? 2.78mm and 13.58 ? 3.8 mm, respectively. The differences were significant (p < 0.01) in all cases. Conclusions: Although the MGD patients' lacrimal drainage systems were patent their tear clearance values were significantly higher than those of healthy volunteers, which may be caused by decreased drainage of tears from the eyes towards the nasal cavity. The understanding of new features regarding the altered physico-chemical characteristics of MGD tears has been augmented by the results of this study.
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk dacryoscintigraphy Tear clearance Meibomian gland dysfunction
Megjelenés:	Contact Lens And Anterior Eye. - 42 : 4 (2019), p. 359-365. -
További szerzők:	Garai Ildikó (1966-) (radiológus) Gesztelyi Rudolf (1969-) (kísérletes farmakológus) Kemény-Beke Ádám (1968-2021) (szemész)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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