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tear osmolarity

Lionel Sebbag, Shin Ae Park, Philip H Kass, David J Maggs, Mayssa Attar, Christopher J Murphy
OBJECTIVE: To evaluate repeatability and reproducibility of tear osmolarity measured using the TearLab(™) osmometer in normal dogs and to assess its diagnostic potential in dogs with keratoconjunctivitis sicca (KCS). ANIMALS STUDIED: Beagle dogs; six normal and five with KCS. PROCEDURES: Tear osmolarity and Schirmer tear test-1 (STT-1) values were obtained at various times. Normal dogs were assessed for diurnal variation and repeatability and reproducibility of measurements...
October 20, 2016: Veterinary Ophthalmology
Goktug Demirci, Sevil Karaman Erdur, Mustafa Ozsutcu, Mustafa Eliacik, Oktay Olmuscelik, Rukiye Aydin, Mehmet Selim Kocabora
OBJECTIVES: The aim of this study was to evaluate tear film function in patients with vitamin D deficiency. METHODS: In a single center, 60 eyes of 30 patients with vitamin D deficiency (group 1), and 60 eyes of 30 healthy individuals (group 2) were evaluated using the Ocular Surface Disease Index (OSDI) questionnaire, Schirmer I test, tear break-up time (TBUT), scoring of ocular surface fluorescein staining using a modified Oxford scale, and tear osmolarity. RESULTS: Tear osmolarity values, OSDI, and Oxford scale scores were significantly higher in group 1 (309±9 mOsm/L, 35...
September 22, 2016: Eye & Contact Lens
Muhittin Taskapili, Kubra Serefoglu Cabuk, Rukiye Aydin, Kursat Atalay, Ahmet Kirgiz, Dede Sit, Hasan Kayabasi
No abstract text is available yet for this article.
2016: Journal of Ophthalmology
Thomas H Dohlman, Jessica B Ciralsky, Edward C Lai
PURPOSE OF REVIEW: Dry eye disease (DED) is a complex, multifactorial condition that is challenging to diagnose and monitor clinically. To date, diagnosis has consisted largely of self-reported symptom questionnaires and a collection of clinical tests including vital dye staining, estimation of tear breakup time and Schirmer's testing, as no gold standard exists. As the dry eye field has made progress in understanding disease pathogenesis, new methods for assessment of this condition have been developed...
October 2016: Current Opinion in Allergy and Clinical Immunology
Hidenaga Kobashi, Kazutaka Kamiya, Kimiya Shimizu
PURPOSE: To compare postoperative ocular surface integrity and innervation between small incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK). METHODS: The Cochrane Central Register of Controlled Trials, PubMED, and EMBASE were searched for prospective comparative studies. Trials meeting the selection criteria were quality appraised, and the data were extracted by 2 independent authors. The weighted mean differences (WMDs) and 95% confidence intervals (CIs) were used to compare dry eye examinations and corneal subbasal nerve density (SMILE-FS-LASIK)...
August 24, 2016: Cornea
Ana González-Mesa, Javier Paz Moreno-Arrones, Daniele Ferrari, Miguel A Teus
PURPOSE: To analyze changes in tear osmolarity and the Ocular Surface Disease Index (OSDI) in patients after cataract surgery. DESIGN: Prospective, observational cohort study. METHODS: setting: Institutional. PATIENT POPULATION: Fifty-two patients with a unilateral cataract (study eye) scheduled for surgery and good visual function in the fellow (control eye). Patients were excluded who were receiving chronic topical therapy, such as glaucoma medications, or had a history of previous ocular surgery...
October 2016: American Journal of Ophthalmology
Nisha S Yeotikar, Hua Zhu, Maria Markoulli, Kelly K Nichols, Thomas Naduvilath, Eric B Papas
PURPOSE: The aim of the study was to understand natural changes of meibomian glands (MG) that occur with aging in the absence of any ocular pathology or ocular discomfort symptoms, to differentiate between "age normal" and pathologic or dysfunctional changes of the MG. METHODS: A total of 185 subjects (109 females) with no pre-existing ocular and systemic abnormalities were recruited and divided into four age groups: 25 to 34, 35 to 44, 45 to 54, and 55 to 66 years...
August 1, 2016: Investigative Ophthalmology & Visual Science
Alice T Epitropoulos, Eric D Donnenfeld, Zubin A Shah, Edward J Holland, Michael Gross, William J Faulkner, Cynthia Matossian, Stephen S Lane, Melissa Toyos, Frank A Bucci, Henry D Perry
PURPOSE: To assess the effect of oral re-esterified omega-3 fatty acids on tear osmolarity, matrix metalloproteinase-9 (MMP-9), tear break-up time (TBUT), Ocular Surface Disease Index (OSDI), fluorescein corneal staining, Schirmer score, meibomian gland dysfunction (MGD) stage and omega-3 index in subjects with dry eyes and confirmed MGD. METHODS: This was a multicenter, prospective, interventional, placebo-controlled, double-masked study. Subjects were randomized to receive 4 softgels containing a total of 1680 mg of eicosapentaenoic acid/560 mg of docosahexaenoic acid or a control of 3136 mg of linoleic acid, daily for 12 weeks...
September 2016: Cornea
William Ngo, Sruthi Srinivasan, Diane Houtman, Lyndon Jones
PURPOSE: To determine the combined effect of TheraTears(®) Lubricant Eye Drops, TheraTears(®) SteriLid Eyelid Cleanser, and TheraTears(®) Nutrition on dry eye signs and symptoms. METHODS: This prospective study enrolled 28 dry eye participants. Participants were instructed to use the Lubricant Eye Drops at least 2-4× a day, SteriLid 1-2× a day, and Nutrition 3 gel caps once a day. Participants were followed up at baseline, 1 month and 3 months. Outcome variables were the Ocular Surface Disease Index (OSDI), Symptom Assessment iN Dry Eye (SANDE) questionnaire, non-invasive tear break-up time (NIBUT), osmolarity, number of meibomian glands blocked (#MG blocked), meibum quality, eyelid margin features, Schirmer's test, tear film lipid layer thickness (LLT), meniscus height, corneal and conjunctival staining...
July 11, 2016: Journal of Optometry
Seray Aslan Bayhan, Hasan Ali Bayhan, Emine Çölgeçen, Canan Gürdal
PURPOSE: To assess the ocular side effects during topical retinoid-antibiotic combination treatment in patients with facial acne vulgaris. METHODS: Forty-three patients applying topical isotretinoin+erythromycin combination (isotrexin gel, GlaxoSmithKline) once daily for the treatment of acne vulgaris were enrolled. Full ophthalmologic examination, Schirmer test (with topical anesthesia), fluorescein break-up time (BUT), corneal fluorescein staining and tear osmolarity measurement with the TearLab system (TearLab Corporation) were carried out before and at the end of the first month of the treatment...
July 12, 2016: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
Nilay Yuksel, Emine Akcay, Berna Ayan, Necati Duru
PURPOSE: To evaluate tear osmolarity (TO) in patients with epiphora caused by primary-acquired nasolacrimal-duct obstruction (PANDO), before and after an external dacryocystorhinostomy (DCR) and to compare with healthy control subjects. MATERIALS AND METHODS: Twenty eyes of 20 patients (15 women, 5 men) who suffered from epiphora for at least one year due to PANDO, and 20 eyes of 20 healthy subjects (13 women, 7 men), were included in this study. External DCR was applied to all patients with PANDO, and TO measurements were repeated during the first month follow-up visit after surgery...
July 15, 2016: Current Eye Research
Dorota H Szczesna-Iskander
PURPOSE: To independently assess the measurement variability of TearLab System in a clinical setting of one visit and to estimate the minimum number of measurements required for reliable readings of tear osmolarity. METHODS: Ten consecutive osmolarity measurements were taken from both eyes by the same examiner at one visit for fourteen subjects. The ocular surface disease index symptoms questionnaire and tear film break up time were also performed. Group average cumulative mean and cumulative coefficient of variation were calculated to assess the TearLab measurement variation...
October 2016: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
Han Kang, Kwang-Ho Cha, Wonkyung Cho, Junsung Park, Hee Jun Park, Bo Kyung Sun, Sang-Min Hyun, Sung-Joo Hwang
BACKGROUND: The objectives of this study were to develop stable cyclosporine A (CsA) ophthalmic micelle solutions for dry-eye syndrome and evaluate their physicochemical properties and therapeutic efficacy. MATERIALS AND METHODS: CsA-micelle solutions (MS-CsA) were created by a simple method with Cremophor EL, ethanol, and phosphate buffer. We investigated the particle size, pH, and osmolarity. In addition, long-term physical and chemical stability for MS-CsA was observed...
2016: International Journal of Nanomedicine
Gemma Julio, Pamela Campos, Pere Pujol, Aitana Munguia, Enric Mas-Aixala
PURPOSE: To establish determining factors for fast corneal sensitivity (CS) recovery after pterygium excision. METHODS: Thirty-two eyes of 14 males and 18 females with primary nasal pterygium were recruited. Differences in CS (in the 4 quadrants and the center using a Cochet-Bonnet esthesiometer), pterygium corneal area (PCA), tear osmolarity, tear break-up time, Schirmer test, and ocular symptoms were analyzed before and 1 month after lesion excision. The relationship between CS recovery (difference between the 2 time points; CS1 - CS0) and the other features was assessed...
June 29, 2016: Cornea
Ching-Li Tseng, Ya-Jung Hung, Zhi-Yu Chen, Hsu-Wei Fang, Ko-Hua Chen
Dry eye syndrome (DES) is a common eye disease. Artificial tears (AT) are used to treat DES, but they are not effective. In this study, we assessed the anti-inflammatory effect of AT containing epigallocatechin gallate (EGCG) and hyaluronic acid (HA) on DES. Human corneal epithelial cells (HCECs) were used in the WST-8 assay to determine the safe dose of EGCG. Lipopolysaccharide-stimulated HCECs showing inflammation were treated with EGCG/HA. The expression of IL-1ß, IL-6, IL-8, and TNF-α was assessed by real-time PCR and AT physical properties such as the viscosity, osmolarity, and pH were examined...
2016: PloS One
Hong Liang, Matthieu Randon, Sylvain Michee, Rachid Tahiri, Antoine Labbe, Christophe Baudouin
AIMS: The physiopathology of rosacea and the correlation between ocular and cutaneous rosacea remains unclear. This study analysed ocular and cutaneous rosacea with in vivo confocal microscopy (IVCM). METHODS: Thirty-four eyes of 34 patients with confirmed rosacea-associated meibomian gland dysfunction-related evaporative dry eye were enrolled in the study. The ophthalmological investigations included dry eye ocular surface disease index (OSDI), the Schirmer test, tear osmolarity, tear break up time, the Oxford score, infrared meibography for meibomian gland (MG) analysis and IVCM investigation for cornea, MG and skin analysis (cheek, hand)...
May 24, 2016: British Journal of Ophthalmology
T N Safonova, O V Gladkova, V I Boev
UNLABELLED: Laser confocal tomography of the cornea enables studying ultrathin sections of corneal layers, which provides additional reliable information on tissue changes in keratoconjunctivitis sicca (KCS). AIM: To assess the significance of laser confocal tomography of the cornea in the diagnosis and monitoring of KCS. MATERIAL AND METHODS: We investigated 38 eyes of 30 patients with severe KCS. The patients were divided into two groups...
March 2016: Vestnik Oftalmologii
Necati Duru, Hasan Altinkaynak, Betul Seher Uysal, Zeynep Duru, Mehmet Erol Can, Sukran Erten, Nilay Yuksel, Emine Kalkan Akcay
PURPOSE: To evaluate tear film osmolarity in patients with systemic lupus erythematosus (SLE). METHODS: A total of 55 eyes from 55 patients with SLE and 47 eyes from 47 age- and gender-matched healthy individuals were included in this study. Tear film osmolarity was evaluated with a lab-on-a-chip technique (TearLab; TearLab Corporation, San Diego, CA) in SLE patients in comparison with healthy individuals, and results were correlated to clinically available diagnostic tests for dry eye, such as tear film break-up time (BUT), Schirmer's test, and Ocular Surface Disease Index (OSDI)...
May 18, 2016: Seminars in Ophthalmology
Emine Kalkan Akçay, Aydan Kilicarslan, Betul Seher Uysal, Gozde Hondur, Pinar Kosekahya, Hasan Altinkaynak, Nurullah Cagil
OBJECTIVE: To investigate the alterations in the ocular surface and tear film parameters 3 months after accelerated corneal collagen cross-linking (A-CXL) in progressive keratoconus (KC) patients. METHODS: Twenty-six patients (33 eyes total) with progressive KC were enrolled in this study. All patients were subjected to ophthalmic surface examination, such as OSDI (ocular surface disease index) scoring, the osmolarity tear test, Schirmer test, tear film breakup time (TBUT) analysis, rose bengal (RB) and fluorescein (Fl) ocular surface staining, and conjunctival impression cytology (IC) analysis, respectively...
May 11, 2016: Eye & Contact Lens
Murat Gunay, Gokhan Celik, Elvin Yildiz, Handan Bardak, Nermin Koc, Heves Kirmizibekmez, Betul Onal Gunay, Rahime Gul Yesiltepe Mutlu
PURPOSE: To compare tear film osmolarity (TFO) and other dry eye tests between diabetic children and normal healthy children. MATERIALS AND METHODS: Twenty-six diabetic children (Group 1) and 20 healthy children without any ocular and/or systemic disorder (Group 2) were enrolled in the study. Detailed ocular surface assessment including, ocular surface disease index (OSDI) questionnaire, TFO measurement (Tear Lab Osmolarity System, San Diago, CA, USA), corneal epithelial thickness (CET) measurement using the anterior segment optical coherence tomography (OCT) (RTVue CAM, Optovue Inc, CA, USA), tear film break-up time (TFBUT) test, Schirmer test, meibography, and conjunctival brush cytology were performed...
May 9, 2016: Current Eye Research
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