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Peer-reviewed articles


Dumbleton,K. A., Spafford,M. M., Sivak,A., Jones,L. W. Exploring compliance: A mixed-methods study of contact lens wearer perspectives. Optometry and Vision Science 2013;90,8:898-908. [ Show Abstract ]

PURPOSE: Using both quantitative and qualitative research methods, this article explores in detail the lens wear and care habits of adapted contact lens wearers and seeks a better understanding of what enables and constrains patient compliance with appropriate lens wear and lens care. METHODS: The study was conducted in two phases: a preliminary online questionnaire (quantitative phase), identifying types of noncompliance, and a series of sequentially conducted focus groups (qualitative phase), exploring constraints to, and enablers of, compliance. RESULTS: One hundred participants completed the online questionnaire; 12 of them also participated in one of four focus groups. The most frequently reported aspects of noncompliance revealed were failure to replace lenses when scheduled, inappropriate lens purchase and supply, sleeping while wearing lenses, use of tap water with lenses and failure to wash hands, failure to clean and replace cases regularly, and inappropriate use of care systems. Using an iterative process, a number of "themes" associated with noncompliance were identified in the focus group discussions. The most frequently occurring themes related to the consequences that may occur if patients were noncompliant with one or more aspects of their contact lens wear and the importance of receiving instructions regarding the most appropriate way to wear and care for their lenses. Most of the themes that emerged during the analysis were both constraints to, and enablers of, compliance. CONCLUSIONS: This study confirms the frequent types of noncompliance with contact lens wear and care while offering a greater understanding of what may constrain and enables contact lens wear and care compliance. Future qualitative studies may help eye care practitioners and the contact lens industry to develop strategies and tools to aid compliance and success in contact lens wear. © 2013 American Academy of Optometry.

Professional Publications


Sivak A. The significance of eyelid conditions for patients. ContactLensUpdate.com 2015.


Sivak A. Conference synopsis: New technology in contact lens research. ContactLensUpdate.com 2014.

Sivak A. Conference Synopsis: Myopia in China (ARVO 2014). ContactLensUpdate.com 2014.


Subbaraman L, Sivak A. Characterizing the surface properties of a contact lens: A review. ContactLensUpdate.com 2013.

Sivak A. New developments in contact lens materials: A conference synopsis. ContactLensUpdate.com 2013.


Sivak A. Barriers to drug delivery via contact lenses: A report from the 2012 BCLA meeting. ContactLensUpdate.com 2012.

Sivak A. Meibomian gland dysfunction: An update from the 2011 meeting of the American Academy of Optometry. ContactLensUpdate.com 2012.


Sivak A. Strategies for improving patient compliance. ContactLensUpdate.com 2011.


Woods CA, Morgan PB, Sivak A. Market utilisation of dilicone hydrogel lenses. Silicone Hydrogels Website 2009,June:.


Fonn D, Dumbleton K, Sivak A. Benefits of silicone hydrogel lenses. Contact Lens Spectrum 2006;21,2s:38-44.

Fonn D, Dumbleton K, Jalbert I, Sivak A. Benefits of silicone hydrogel lenses. Contact Lens Spectrum 2006;21,2s:38-44.


Fonn D, Sivak A. Benefits and challenges of high-Dk/t materials. Contact Lens Spectrum 2005;20,2:28-31.



Sorbara L, Fonn D, Woods C, Sivak A, Boshart B. Correction of Keratoconus with GP Contact Lenses. Bausch and Lomb. 2010.


Sorbara L, Fonn D, Woods C, Sivak A, Boshart B. Correction of Presbyopia with GP Contact Lenses. Bausch and Lomb. 2007.