Browsing Waterloo Research by Author "Purslow, Christine"
Now showing items 1-14 of 14
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Application of a new grading scale for tear ferning in non-dry eye and dry eye subjects
Masmali, Ali M.; AL-Qhtani, Sultan; Al-Gasham, Talha M.; El-Hiti, Gamal A.; Purslow, Christine; Murphy, Paul J. (Elsevier, 2014-09-14)Purpose: To apply the Masmali tear ferning (TF) grading scale on non-dry eye (NDE) and dry eye (DE) subjects to test the validity of the grading scale in practice, and to describe the grading scale range for NDE and DE. ... -
Atomic force microscopy analysis of the effect of plasma treatment on gas permeable contact lens surface topography
Gill, Felicity; Purslow, Christine; Murphy, Paul J. (Elsevier, 2019-02-23)Purpose: Using atomic force microscopy (AFM) to investigate anterior surface topography (AST) in worn and unworn, plasma surface-treated (PST) and untreated (UT) gas permeable (GP) lenses, and influence of surface topography ... -
Comparison of a new portable digital meniscometer and optical coherence tomography in tear meniscus radius measurement
Bandlitz, Stefan; Purslow, Christine; Murphy, Paul J.; Pult, Heiko (Wiley, 2013-10-07)Purpose: Non-invasive measurement of tear meniscus radius (TMR) is useful in the assessment of tear volume for dry eye diagnosis. This study investigates the agreement between a new, portable, slit-lamp mounted, digital ... -
Development of a new grading scale for tear ferning
Masmali, Ali M.; Murphy, Paul J.; Purslow, Christine (Elsevier, 2013-10-25)Purpose: This paper reports on the development of a new tear ferning (TF) subjective grading scale, and compares it with the Rolando scale. Method: TF patterns obtained from tear film samples collected from normal and dry ... -
Influence of Conjunctival Folds on Calculated Tear Meniscus Volume Along the Lower Eyelid
Bandlitz, Stefan; Purslow, Christine; Murphy, Paul J.; Pult, Heiko (Elsevier, 2016-05-03)Purpose: In calculating tear meniscus volume (TMV), tear meniscus height (TMH), radius (TMR) and cross-sectional area (TMA) are usually measured at the center of the lower lid margin, but lid-parallel conjunctival folds ... -
Lid-parallel conjunctival fold (LIPCOF) morphology imaged by optical coherence tomography and its relationship to LIPCOF grade.
Bandlitz, Stefan; Purslow, Christine; Murphy, Paul J.; Pult, Heiko (Elsevier, 2019-06)Purpose: Lid-parallel conjunctival folds (LIPCOF) are a well-accepted clinical sign in dry eye diagnosis. Commonly, LIPCOF is classified by grading the number of folds observed by slit-lamp microscope. This study investigated ... -
A New Portable Digital Meniscometer
Bandlitz, Stefan; Purslow, Christine; Murphy, Paul J.; Pult, Heiko; Bron, Anthony J. (Wolters Kluwer, 2014-01)Purpose: The aims of this study were (i) to develop a new portable slit-lamp mounted digital meniscometer (PDM) and (ii) to test its accuracy and repeatability compared to the existing Yokoi et al. videomeniscometer ... -
Ocular impression-taking - which material is best?
Turner, Jennifer; Purslow, Christine; Murphy, Paul J. (Wolters Kluwer, 2019-01)Objectives: To assess the efficacy and effect on clinical signs of a polyvinylsiloxane (Tresident; Shütz Dental Group GmbH, Germany) compared with an irreversible hydrocolloid (Orthoprint; Zhermack SpA, Badia Polesine, ... -
Relationship between Corneal Sensation, Blinking, and Tear Film Quality
Nosch, Daniela Sonja; Pult, Heiko; Albon, Julie; Purslow, Christine; Murphy, Paul J. (Wolters Kluwer, 2016-05-01)Purpose: To examine the possible role of corneal sensitivity and tear film quality in triggering a blink by investigating the relationship between blink rate, central corneal sensitivity threshold (CST), ocular surface ... -
The Relationship between Tear Meniscus Regularity and Conjunctival Folds
Bandlitz, Stefan; Purslow, Christine; Murphy, Paul J.; Pult, Heiko (Wolters Kluwer, 2014-09-01)Purpose: To investigate the capability of a new portable digital meniscometer (PDM) to measure tear meniscus radius (TMR) and tear meniscus height (TMH) at different locations along the lower lid and to evaluate relationships ... -
Repeatability and Diurnal Variation of Tear Ferning Test
Masmali, Ali M.; Al-Bahlal, Jarallah M.; El-Hiti, Gamal A.; Akhtar, Saeed; Purslow, Christine; Murphy, Paul J.; Almubrad, Turki (Wolters Kluwer, 2015-09-01)Objectives: To investigate tear ferning (TF) test repeatability between sessions by observing changes in the tear fern pattern during the day. Methods: Twenty-three healthy young adults (15 men and 8 women), ranging in age ... -
The tear ferning test: a simple clinical technique to evaluate the ocular tear film
Masmali, Ali M.; Purslow, Christine; Murphy, Paul J. (Wiley, 2014-08-20)A healthy tear film is very important for many major functions of the ocular surface. Dry eye disease is a significant clinical problem that needs to be solved but the poor correlation between clinical signs and reported ... -
The TFOS International Workshop on Contact Lens Discomfort: Executive Summary
Nichols, Jason J.; Willcox, Mark D. P.; Bron, Anthony J.; Belmonte, Carlos; Ciolino, Joseph B.; Craig, Jennifer P.; Dogru, Murat; Foulks, Gary N.; Jones, Lyndon W.; Nelson, J. Daniel; Nichols, Kelly K.; Purslow, Christine; Schaumberg, Debra A.; Stapleton, Fiona; Sullivan, David A. (Association for Research in Vision and Ophthalmology, 2013-10-18)Contact lens discomfort (CLD) is a frequently experienced problem, with most estimates suggesting that up to half of contact lens wearers experience this problem with some frequency or magnitude. This condition impacts ... -
Topical anaesthetic use prior to rigid gas permeable contact lens fitting
Gill, Felicity; Murphy, Paul J.; Purslow, Christine (Elsevier, 2017-07-11)Purpose To investigate effect of topical anaesthetic (TA) during gas permeable (GP) contact lens (CL) fitting on subjective and objective measures of patient anxiety. Methods 47 subjects (mean ± sd age = 26.9 ± 4.9 ...