scholarly journals Effect of ocular demodicosis on the stability of the tear film and the tear break up time

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Aleksandra Sędzikowska ◽  
Witold Tarkowski ◽  
Joanna Moneta-Wielgoś ◽  
Krzysztof Grzyliński ◽  
Grzegorz Tarkowski ◽  
...  
Keyword(s):  
Tear Film ◽  
Hair Follicles ◽  
Film Stability ◽  
Mean Values ◽  
Non Invasive ◽  
Tear Film Stability ◽  
Break Up ◽  
The Difference ◽  
The Stability ◽  
The Impact

AbstractThe aim of the study was to analyze the correlation between the presence of Demodex mites in the hair follicles of patients' eyelashes and the stability and break up time of the tear film assessed with the Non-Invasive Tear Break Up Times (NIBUT) method. 319 patients were included in the study (195 women, 124 men). The patients were divided into two groups: those with Demodex infestation and without visible symptoms of eyelid or eye surface diseases, and asymptomatic non-infested patients. The NIBUT analysis was performed with a 5 M keratograph (oculus). Non-invasive tests were performed to identify the first and mean values of the tear break up time. The first and mean tear break up time in the Demodex-infested group was lower than in the non-infested subjects. The difference was a highly statistically significant. There was a significant correlation with the age of the patients for the first break up time. The first break up time in both eyes decreased with the age of the Demodex-infested and non-infested patients. The NIBUT analyses indicate the impact of Demodex mites on the tear film stability. This may suggest possible association of demodicosis with dry eye syndrome.

Minimising instilled volume reduces the impact of fluorescein on clinical measurements of tear film stability

2017 ◽  
Vol 40 (3) ◽  
pp. 170-174 ◽  
Author(s):  
Jennifer K. Mooi ◽  
Michael T.M. Wang ◽  
Joevy Lim ◽  
Andreas Müller ◽  
Jennifer P. Craig
Keyword(s):  
Tear Film ◽  
Film Stability ◽  
Tear Film Stability ◽  
Clinical Measurements ◽  
The Impact

Comparative study of two non-invasive tear film stability techniques

1994 ◽  
Vol 13 (4) ◽  
pp. 263-269 ◽  
Author(s):  
Rebecca K. Madden ◽  
Jerry R. Paugh ◽  
Chao Wang
Keyword(s):  
Comparative Study ◽  
Tear Film ◽  
Film Stability ◽  
Non Invasive ◽  
Tear Film Stability

scholarly journals Pathology of the Organs of Vision in Metallurgists

2019 ◽  
Vol 15 (4) ◽  
pp. 492-496
Author(s):  
A. L. Onischenko ◽  
A. V. Kolbasko ◽  
M. A. Melnichenko ◽  
S. N. Filimonov
Keyword(s):  
Tear Film ◽  
Control Group ◽  
Length Of Service ◽  
Metallurgical Production ◽  
Outer Corner ◽  
Cataract Development ◽  
The Difference ◽  
The Stability ◽  
The Impact ◽  
Chronic Conjunctivitis

The frequency and structure of ophthalmopathology in workers of the Novokuznetsk Metallurgical Combine (NMC) have been studied. In total 1911 workers of NMC have been examined. The control group comprised 1801 people working in hazardous industrial conditions. The experimental group consisted of employees dealing with management, engineering center, accounting (110 people). Their work was not connected with the impact of unfavorable factors of metallurgical production. In the control group, the hazard classes ranged from 3.2 to 3.4. The difference between the classes of hazard impact consisted in an increase of the intensity of the hazardous factors exposure. In the structure of conjunctival diseases we have diagnosed chronic conjunctivitis (198.3 ‰), chronic blepharoconjunctivitis (109.4 ‰), pinguecula (266.7 ‰) and pterygium (7.2 ‰) in metallurgical workers. Pengucules in the control group of workers was not only more often than in engineers, but also larger, often located in the inner and outer corner of the eye, and was detected in workers under 30–35 years. The workers of the main shops suffered more severely from the function of tear production and the stability of the pre-corneal tear film. The miners suffered from the highest frequency of cataract development — 301 ‰. Thus, a high incidence of inflammatory and dystrophic diseases of the eyelids and conjunctiva, cataracts in metallurgy has been established. An increase in the frequency of ophthalmopathology was noted with an increase in the length of service under harmful conditions of metallurgical production. The authors suggest the term “metallurgy ophthalmopathy”, which includes manifestations of chronic conjunctivitis and / or blepharoconjunctivitis against the background of unstable precorneal film and frequent formation of posterior-subcapsular opacities of the lens.

Choosing the optimal method for preoperative risk assessment of dry eye syndrome development in patients with myopia

Reflection ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 30-36
Author(s):  
O.V. Kolenko ◽  
◽  
Y.V. Kutuzova ◽  
I.V. Dutchin ◽  
E.L. Sorokin ◽  
...  
Keyword(s):  
Dry Eye ◽  
Tear Film ◽  
Dry Eye Syndrome ◽  
Rupture Time ◽  
Film Rupture ◽  
Optimal Method ◽  
Film Stability ◽  
Tear Film Stability ◽  
Keratorefractive Surgery ◽  
The Stability

Aim. Comparative analysis of the effectiveness of keratotopography methods and classical Norn’s test in assessing the stability of the tear film (TF) in patients with myopia before photorefractive surgery. Methods. The study involved 26 patients. All of them were planned for keratorefractive surgery to correct myopic refraction and astigmatism. Their age averaged 32.5±14.5 years (18-47 years). The stability of pre-corneal tear film was assessed using computed keratotopography and Norn’s test - the tear film rupture time (TFRT) was determined. A standard questionnaire was also used to assess the severity of symptoms of dry eye syndrome (DES). A comparison was made of the indicators of tear film, stability obtained by the methods of keratotopography and Norn’s test, with their subsequent comparison with the data of the questionnaire. Results. In 17 patients (65.4 %), TFRT index corresponded to the age norm. In the remaining 9 people (34.6 %), indicators of tear film stability were reduced both by keratotopography (12±4 sec) and by Norn’s test (13.5± 4.5 sec), and there were also subjective signs of dry eye syndrome according to questionnaire data. The data turned out to be comparable. Conclusion. The incidence of impaired stability of the TF and subjective manifestations of DES among patients planned for keratorefractive surgery for myopia and myopic astigmatism was significant and, according to our data, made 34.6 %. To prevent complicated postoperative course of photorefractive surgery, it is necessary to assess the condition of the ocular surface immediately before refractive surgery, to identify the risk group for DES development. Key words: dry eye syndrome; tear film; keratotopography; Norn’s test; tear film rupture time.

scholarly journals Comparison of non-invasive tear film stability measurement techniques

2017 ◽  
Vol 101 (1) ◽  
pp. 13-17 ◽  
Author(s):  
Michael TM Wang ◽  
Paul J Murphy ◽  
Kenneth J Blades ◽  
Jennifer P Craig
Keyword(s):  
Measurement Techniques ◽  
Tear Film ◽  
Film Stability ◽  
Non Invasive ◽  
Tear Film Stability ◽  
Stability Measurement

A non-invasive instrument for clinical assessment of the pre-corneal tear film stability

1985 ◽  
Vol 4 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Lakhbir S. Mengher ◽  
Anthony J. Bron ◽  
Stephen R. Tonge ◽  
David J. Gilbert
Keyword(s):  
Clinical Assessment ◽  
Tear Film ◽  
Film Stability ◽  
Non Invasive ◽  
Tear Film Stability

scholarly journals Dry Eye Syndrome in Glaucomatous Patients using Topical Anti-Glaucoma Therapy

2020 ◽  
Vol 36 (1) ◽  
Author(s):  
Nabila Zulfiqar ◽  
Muhammad Sufyan Aneeq Ansari ◽  
Khurram Nafees ◽  
Rabia Nawaz ◽  
Manzra Shaheen
Keyword(s):  
Observational Study ◽  
Study Design ◽  
Dry Eye ◽  
Tear Film ◽  
Dry Eye Syndrome ◽  
Film Stability ◽  
Glaucoma Therapy ◽  
Tear Film Stability ◽  
Time Test ◽  
Break Up

Purpose:  To determine the frequency of Dry eye in Glaucoma patients using topical anti-glaucoma therapy. Study Design:  Descriptive Observational study. Place and Duration of Study:  Study was conducted in outpatient department of Fatima Memorial Hospital Shadman, Lahore, from October 2016 to February 2017. Material & Methods:  In this study, 61 diagnosed cases of glaucoma were included. Patients with significant dermatological problems that may be associated with dry eye such as rosacea and blepharitis were excluded from the study. The individuals were assessed by consultant Ophthalmologist for Dry eye syndrome having symptoms of stinging and burning sensations itching, watering, irritation, due to regular use of topical anti-glaucoma drugs. A written consent was taken from every patient before the test. The ocular surfaces of the patients were evaluated using Tear film break-up time test and Basal Schrimer’s test. Patients having TBUT less than 11 seconds were categorized as having dry eye. The degree of dryness was categorized as mild, moderate and sever Dry eye. Results:  Among 61 patients of glaucoma using topical anti-glaucoma therapy, 22 (36.1%) were male and 39 (63.9%) were female. Mean age of the patients was 50.76 ± 15.67 years. On the basis of Tear film Break-up time test, 49 (81%) patients had Tear Break-up time less than 10 seconds and 12 (19%) patients were normal. On the basis of Schrimer`s test 51 (83.66%) patients had Dry eye. Conclusion:  Topical use of anti-glaucoma therapy affects tear film stability and its functions leading to Dry eye syndrome.

The Impact of Artificial Tear Viscosity on the Results of Optical Coherence Tomography

2020 ◽  
Author(s):  
Elisa Hannemann ◽  
Carl Erb
Keyword(s):  
Optical Coherence Tomography ◽  
Hyaluronic Acid ◽  
Tear Film ◽  
Optical Coherence ◽  
Non Invasive ◽  
Significant Difference ◽  
Measurement Results ◽  
Before And After ◽  
Break Up ◽  
The Impact

Abstract Background In earlier studies, an irregular tear film could be responsible for artifacts in imaging procedures in ophthalmology. As a result, this study will investigate the influence of hyaluronic acid-containing tear substitutes of different viscosities on the measurement results of optical coherence tomography and on the non-invasive tear film break-up time. Methods The study included three sessions in which three hyaluronic acid tear substitutes of different viscosities (Hylo-Vision 0.1%, 0.2%, 0.3%, OmniVision GmbH, Puchheim, Germany) were applied to each subject. In 20 healthy volunteers, the non-invasive tear film break-up time was measured before and after the application of the tear substitutes using Keratograph 5M (Oculus GmbH, Wetzlar, Germany) and optical coherence tomography using 3D OCT-2000 (Topcon, Hamburg, Germany). Results The median age of the volunteers was 28.5 years. 11 women (55%) and 9 men (45%) were examined. The non-invasive tear film break-up time improved significantly (p = 0.027) after the application of 0.3% hyaluronic acid. In the study, no significant difference was found in all OCT parameters used before and after application of the different viscous hyaluronic acid-containing tear substitutes. Conclusion In this study, no influence of tear substitutes containing different viscosities of hyaluronic acid on the measurement results of optical coherence tomography could be determined. Therefore, 0.1%, 0.2% and 0.3% hyaluronic acid can be applied to the patient to improve the corneal surface before the examination with optical coherence tomography, without influencing the measurement results of optical coherence tomography.

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