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Association between tear film break up time and blink interval in visual display terminal users

International Journal of Ophthalmology(English edition) 2018年第10期11卷 1691-1697页

作者： Miki Uchino Motoko Kawashima Yuichi Uchino Kazuo Tsubota Norihiko Yokoi Department of Ophthalmology Keio University School of Medicine Department of Ophthalmology Kyoto Prefectural University School of Medicine

AIM：To investigate the association between tear film break up time（TBUT）and blinking interval in visual display terminal（VDT）***：Nine hundred and thirty VDT users underwent dry eye testing,and functional visual acuity（FVA）*** blinking interval during FVA was compared with *** with longer blinking interval than TBUT were considered as unstable tear *** regression analysis revealed the risk factors for unstable tear ***：Among 930 workers,858 subjects（92.3%）participated in this *** 80% of the subjects were categorized into the unstable tear *** tear group has significantly lower Schirmer values and TBUT（17.5±11.6 vs 21.1±11.5 mm,3.7±2.6 vs 5.7±2.7s,both P〈0.001）.There were no significant differences in epithelial staining or severity of *** regression showed that over 40y was a risk for being unstable tear group[odds ratio（OR）=1.53;95%confidence interval（CI）=1.06-2.20].Contact lens use was protective factor for being in the unstable tear group（OR=0.37;95%CI=0.26-0.53）.CONCLUSION：Subjects with shorter TBUT than blinking interval are prevalent among VDT *** over the age of 40 shows an increased risk for unstable tear film.

关键词： dry eye disease blink interval tear film break up time visual display terminal use

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A randomized,fellow eye,comparison of keratometry,aberrometry,tear film,axial length and the anterior chamber depth after eye rubbing in non-keratoconic eyes

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Eye and Vision 2017年第1期4卷 106-113页

作者： Jordan V.Chervenkoff Elizabeth Hawkes Gabriela Ortiz Deborah Horney Mayank A.Nanavaty Sussex Eye Hospital Brighton&Sussex University Hospitals NHS TrustEastern RoadBrighton BN25BFUK

Background:To investigate the effect of eye rubbing on keratometry(K),aberrometry,tear film break-up-time(TFBUT)and anterior chamber depth(ACD).Methods:Volunteers without any corneal pathology or dry eyes were randomised to rubbing in one eye and the fellow-eye was *** rubbing was performed for 2 *** outcomes studied were anterior and posterior K *** outcomes were changes in TFBUT,axial length(AL)&ACD,K changes in various zones,asphericity and *** and post rubbing K,aberrometry,ACD and TFBUT were assessed in a predetermined *** relationship of the above parameters to axial length(AL)was also *** was analysed using vector ***:Pre versus post rubbing,anterior flatter K further flattened(42.51±1.52 D vs.42.36±1.53 D,p=0.003)and the changes to J0 vector in central cornea(−0.16±0.26 D vs.-0.27±0.33 D,p=0.038)suggested change to against-the-rule(ATR)*** was significant change in Z^(+2)_(2) polynomial following *** found a positive correlation between axial length and change in posterior K(r=0.335,p=0.020).The TFBUT reduced following eye rubbing(15.3 s vs.13.9 s,p=0.0001).There was a positive correlation between AL and increase in ACD post rubbing(r=0.300,p=0.038).There was a positive correlation between ACD and change in mean posterior K(r=0.305,p=0.035).Conclusions:In healthy eyes,following eye rubbing,there is a significant change in TFBUT and central anterior K changes towards ATR *** eyes had more changes in posterior K and ***,eyes with deeper ACD showed more steepness of posterior K.

关键词： Eye rubbing Ectasia tear film break up time Astigmatism Aberrations

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Ocular surface microbiota in patients with varying degrees of dry eye severity

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International Journal of Ophthalmology(English edition) 2023年第12期16卷 1986-1995页

作者： Xin-Rong Zou Pei Zhang Yuan Zhou Yao Yin Department of Ophthalmology Fengcheng HospitalFengxian DistrictShanghai 201411China Fengcheng Branch Shanghai Ninth People’s Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 201411China Department of Ophthalmology Huashan Hospital of Fudan UniversityShanghai 200040China Department of Ophthalmology Gonghui HospitalJing’an DistrictShanghai 200436China

AIM:To elucidate the profiles of commensal bacteria on the ocular surfaces of patients with varying severity of dry eye(DE).METHODS:The single-center,prospective,case-control,observational study categorized all participants into three distinct groups:1)control group(n=61),2)mild DE group(n=56),and 3)moderate-to-severe DE group(n=82).Schirmer’s tear secretion strips were used,and the bacterial microbiota was analyzed using 16S ribosomal ribonucleic acid gene ***:The three groups had significant differences in alpha diversity:the control group had the highest richness(Chao1,Faith’s phylogenetic diversity),the mild DE group showed the highest diversity(Shannon,Simpson),and the moderate-to-severe DE group had the lowest of the above-mentioned *** severity was positively correlated with a reduction in beta diversity of the microbial community,with the moderate-to-severe DE group exhibiting the lowest beta *** discriminant analysis effect size presented distinct dominant taxa that significantly differed between ***,the exacerbation of DE corresponded with the enrichment of certain pathogenic bacteria,as determined by random forest ***:As DE severity worsens,microbial community diversity tends to *** development corresponds with changes in microbial constituents,primarily characterized by reduced microbial diversity and a more homogenous species composition.

关键词： dry eye microbiota ocular surface tear film break up time

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Prevalence of Dry Eye and Its Association with Various Risk Factors in Rural Setup of Western Uttar Pradesh in a Tertiary Care Hospital

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Open Journal of Preventive Medicine 2016年第1期6卷 57-63页

作者： Ravi Ranjan Sushil Kumar Shukla Chandra Veer Singh B. N. Mishra Sriti Sinha B. D. Sharma Department of Ophthalmology U. P. Rural Institute of Medical Sciences and Research Saifai India Department of Community Medicine U. P. Rural Institute of Medical Sciences and Research Saifai India Department of Pharmacology U. P. Rural Institute of Medical Sciences and Research Saifai India Department of Community Medicine R. D. Gardi Medical College Ujjain India District Hospital Etawah India

Purpose: To study the prevalence of dry eye in a hospital based population of rural setup and to evaluate its association with various risk factors. Material and Methods: In this cross sectional study, patients above 20 years of age were screened randomly for dry eye. An 8 points questionnaires, slit lamp examination of meibomian glands, tear film breakup time, fluorescein staining of cornea, schirmer test were used to diagnose dry eye. The diagnosis was made when three of the five parameters were positive. The role of various occupations as well as role of different exposure factors like sunlight, excessive wind, smoking, drugs, and air pollution as dry eye risk factors was accessed. Result: Out of 445, 45.39% patients had dry eye. Dry eye prevalence was higher in those above 70 years of age (74%). It was higher in male population (51.82%) compare to female population (37.37%), nearly equal in rural (46.04%) and urban population (44.31%) and highest among factory workers (90%). Correlation of dry eye with drugs (P = 0.0002), sunlight/high temperature (P = 0.0003) and smoking (P = 0.03) were significant. Conclusion: This is a hospital based study which provides prevalence of dry eye in rural region of western Uttar Pradesh. It is more common in old age male population and significantly higher in factory workers. Out of different modifiable risk factors most important are drugs, sunlight/high temperature and smoking.

关键词： Dry Eye Fluorescein Stain Schirmer Test tear film break up time

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