نتایج جستجو برای: tear fault

تعداد نتایج: 74777  

Journal: :Progress in retinal and eye research 2015
R J Braun P E King-Smith C G Begley Longfei Li N R Gewecke

Great strides have recently been made in quantitative measurements of tear film thickness and thinning, mathematical modeling thereof and linking these to sensory perception. This paper summarizes recent progress in these areas and reports on new results. The complete blink cycle is used as a framework that attempts to unify the results that are currently available. Understanding of tear film d...

2012
Jianhua Wang Lele Cui Meixiao Shen Victor L Perez Michael R Wang

PURPOSE This study was designed to determine the ability of ultra-high-resolution optical coherence tomography (UHR-OCT) to monitor tear meniscus volume after dry eye treatment with Restasis(®) (0.05% cyclosporine). METHODS UHR-OCT was used to image the upper and lower tear menisci (height and volume) in 14 consecutive dry eye patients at baseline. The treatment group was initiated on daily R...

Journal: :The British journal of ophthalmology 2002
N Eter M Göbbels

AIM To develop a reliable and objective non-touch technique for determination of tear volume and tear secretion by means of tear film fluorophotometry. METHODS 10 defined concentrations of sodium fluorescein were given in an artificial chamber and measured by the Fluorotron Master (Coherent Radiation Inc). A calibration line was established and the calibration equation was programmed into the...

Journal: :Investigative ophthalmology & visual science 2013
Carolyn Begley Trefford Simpson Haixia Liu Eliza Salvo Ziwei Wu Arthur Bradley Ping Situ

PURPOSE The purpose of this study was to test the association between tear film fluorescence changes during tear break-up (TBU) or thinning and the concurrent ocular sensory response. METHODS Sixteen subjects kept one eye open as long as possible (MBI), indicated their discomfort level continuously, and rated ocular sensations of irritation, stinging, burning, pricking, and cooling using visu...

Journal: :Arquivos brasileiros de oftalmologia 2017
Goktug Demirci Sevil Karaman Erdur Rukiye Aydin Ali Balevi Mustafa Eliacik Mustafa Ozsutcu Oktay Olmuscelik

Purpose: The aim of this study was to evaluate tear osmolarity, tear film function, and ocular surface changes in patients with psoriasis. Methods: At a single center, 30 eyes of 30 patients with psoriasis (group 1) and 30 eyes of 30 healthy individuals (group 2) were evaluated using the Ocular Surface Disease Index (OSDI) questionnaire, Schirmer I test, tear film break-up time (TBUT) test, s...

2015
Laily Najafi Mojtaba Malek Ameneh Ebrahim Valojerdi Mohammad E Khamseh Hossein Aghaei

BACKGROUND To determine the diagnostic performance of tear osmolarity in diagnosis of dry eye disease by using tear lab osmolarity system in people with type 2 diabetes, and to compare it with common diagnostic tests already available in clinical practice. METHODS Two hundreds forty three people with type 2 diabetes were included. Tear osmolarity was measured with the tear osmolarity system. ...

2017
David Williams Heather Hewitt

This study evaluates tear ferning as an ancillary technique for the evaluation of the canine tear film in normal eyes and eyes affected by keratoconjunctivitis sicca (KCS). Thirty dogs with KCS and 50 control dogs with normal tear film were evaluated with a full ophthalmoscopic examination and a Schirmer tear test type 1 (STT) determined before tear samples were obtained from the medial canthus...

2017
Kristina M. Haworth Heather L. Chandler

Purpose We evaluate feasibility and repeatability of measures for lipid peroxidation and DNA oxidation in human tears, as well as relationships between outcome variables, and compared our findings to previously reported methods of evaluation for ocular sun exposure. Methods A total of 50 volunteers were seen for 2 visits 14 ± 2 days apart. Tear samples were collected from the inferior tear me...

Journal: :Journal of athletic training 2009
Jason S Scibek James E Carpenter Richard E Hughes

CONTEXT The body of knowledge concerning shoulder kinematics in patients with rotator cuff tears is increasing. However, the level of understanding regarding how pain and tear size affect these kinematic patterns is minimal. OBJECTIVE To identify relationships between pain associated with a full-thickness rotator cuff tear, tear size, and scapulohumeral rhythm (SHR) and to determine whether p...

Journal: :Investigative ophthalmology & visual science 2010
Feng Chen Meixiao Shen Wei Chen Jianhua Wang Ming Li Yimin Yuan Fan Lu

Purpose. To use optical coherence tomography (OCT) to evaluate the effect of punctal occlusion on tear meniscus volume in dry eye patients. Methods. Occlusion of both upper and lower puncta with collagen plugs was performed on one eye each in 20 dry eye patients and 20 normal subjects. The upper and lower tear menisci were imaged simultaneously by real-time OCT before punctal occlusion and on d...

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