Results 231 to 240 of about 22,571,102 (275)

Relation Between Blink Frequency and Break-Up Time?

Acta Ophthalmologica, 1987
Abstract. A possible correlation between break‐up time (BUT) and blink frequency was investigated in 32 healthy persons (17 females and 15 males) and in 29 patients suffering from primary Sjögren's syndrome (27 females and 2 males). A significant negative correlation, was found between BUT and blink frequency.
M Norn, J U Prause
exaly   +3 more sources

Age, Gender, and Tear Break-Up Time

Optometry and Vision Science, 1993
ABSTRACT We investigated the effect of age and gender on the tear break‐up time (TBUT) of 2 groups of normal, asymptomatic subjects [92 Hong Kong‐Chinese (HK‐Chinese) and 76 Singapore‐Chinese (S‐Chinese)] using the conventional fluorescein‐instillation technique.
P, Cho, M, Yap
openaire   +2 more sources

Non‐Invasive Tear Break‐Up Time in Normal Malays [PDF]

Australasian journal of optometry, The, 2002
Tear stability in normal Malays with consideration of gender and age has not been reported. In this study, we measured tear stability in normal Malays using the non-invasive tear break-up time (NIBUT).Forty-eight Malay subjects aged seven to 60 years were recruited from among the staff, their children and students of the faculty.
Maurice Yap, Norhani Mohidin
exaly   +3 more sources

Review of the Tear Break-Up Time and a Closer Look at the Tear Break-Up Time of Hong Kong Chinese

Optometry and Vision Science, 1993
ABSTRACT The technique of assessing tear stability using the fluorescein instillation technique has been widely used in the clinical diagnosis of “dry eye” and in the screening of potential contact lens wearers. Various inconsistencies in the application of the tear break‐up time (TBUT) techniques and the results obtained were noted ...
P, Cho, B, Brown
openaire   +2 more sources

Automation of the tear film break-up time test

Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies, 2011
The Break-Up Time test (BUT) evaluates the quality and stability of the tear film. It is used for the diagnosis of the dry eye syndrome, a widespread disease in the developed world. This paper describes an automatic methodology to evaluate the BUT test. This methodology locates the different measurement areas from a video of the tear film, extracts the
Elsa Cebreiro, Lucía Ramos, Antonio Mosquera González, Noelia Barreira, Manuel Francisco González Penedo   +4 more
openaire   +1 more source

Tear break‐up time: clinical procedures and their effects

Ophthalmic and Physiological Optics, 1998
Summary Three successive (representative) values of fluorescein‐instillation TBUT (tear break‐up time) were obtained from a group of young Hong Kong (HK)‐Chinese. The median TBUT1, TBUT2 and TBUT3 were 3.2, 3.8 and 4.5 sec, respectively. Wilcoxon signed‐rank tests showed that TBUT1 was significantly different from TBUT2 and TBUT3, but
P, Cho, L, Leung, A, Lam, A, Choi
openaire   +2 more sources

The Effects of Breaking up Prolonged Sitting Time

Medicine & Science in Sports & Exercise, 2015
Prolonged time spent in sedentary behaviors (i.e., activities performed while sitting or reclining) has been consistently shown as an independent risk factor for increased cardiometabolic risk and all-cause mortality, whereas breaking up sedentary time is associated with improved cardiometabolic profile.
Fabiana Braga, Benatti, Mathias, Ried-Larsen   +1 more
openaire   +2 more sources

The Relation between Invasive and Noninvasive Tear Break-Up Time

Optometry and Vision Science, 1995
ABSTRACT TBUT and NITBUT (tear break‐up time and noninvasive tear break‐up time, respectively) were measured on four groups of subjects from different countries (two groups of Caucasians, two groups of Chinese). No significant difference was found in either TBUT or NITBUT values among the four groups of subjects.
P, Cho, W, Douthwaite
openaire   +2 more sources

On the break-up times and lengths of diesel sprays

International Journal of Heat and Fluid Flow, 1992
Abstract Measurements of the break-up zone characteristics are reported for simple orifice, direct-injection diesel injectors operating with commercial pumps and injecting into high pressure gas. The difficulty of using photography in this high density region leads to the use of indirect techniques for estimating break-up length.
A.J. Yule, I. Filipovic
openaire   +1 more source

Study of tear film flow and break up time (BUT) in trachoma

Acta Ophthalmologica, 1986
Abstract Tear film flow and stability studies were carried out in patients suffering from cicatrizing trachoma by Schirmer test I and tear film break‐up‐time (BUT) measurements, respectively. Both Schirmer test I and BUT values were decreased significantly (t‐test, P < 0.001) depicting aqueous as well as mucin deficiency and hence, an unstable tear ...
S S, Moudgil, M, Singh, I P, Parmar, A K, Khurana   +3 more
openaire   +2 more sources