Contact Lens Update

• Issue 07 | March 2012

  Reducing lens case contamination

  Epidemiological studies have linked poor lens case hygiene with increased risk of developing serious conditions like microbial keratitis. Even tightly-controlled clinical trials report case contamination as high as 92% overall and 15-45% with potentially pathogenic bacteria. In this edition of Contact Lens Update, Mark Willcox outlines new disinfection guidelines and tools; David McCanna reviews an article (Willcox 2010) detailing just what kinds of microorganisms you might find living on a contact lens case and their persistence when exposed to marketed lens care systems, and Mark Willcox focuses on the efficacy of one multipurpose system in particular. Don't miss the opportunity to tell us what you think of silver-infused lens cases and heat-based disinfecting strategies, in our extended reader poll -- located under Clinical Insights.

  • Editorial - Review of recent development to reduce contact lens case contamination
  • Feature Article - How safe is your lens case?
  • Conference Highlights - Effect of a MPDS containing Polyquaternium-­1 and Alexidine dihydrochloride on contamination of contact lens cases
  • Clinical Insight - Effective care of contact lens cases: What do you think?

• Issue 06 | January 2012

  Dry eye and meibomium gland dysfunction

  With dry eye cited as a major reason for contact lens dropout, it's no wonder that we continue to search for answers as to its cause, most effective assessment and potential treatments. In this edition of Contact Lens Update, Kelly Nichols outlines the essential components to cover in a five-minute ocular surface exam; Sruthi Srinivasan looks at the possibility of a connection between contact lens wear and meibomian gland dysfunction; Etty Bitton summarizes key points in a recent review of the past, present and future of meibomian gland dysfunction; and Alisa Sivak reviews research presented at the 2011 annual meeting of the American Academy of Optometry.

  • Editorial - Contact lens wear and meibomian gland dysfunction
  • Feature Article - The past, present and future of meibomian gland dysfunction: A review
  • Conference Highlights - Meibomian gland dysfunction: An update from the 2011 meeting of the American Academy of Optometry
  • Clinical Insight - Five-minute ocular surface exam in a contact lens practice

• Issue 05 | November 2011

  Myopia Control

  In response to rising awareness of myopia as an international public health concern, this edition of Contact Lens Update highlights promising advances in the field. Percy Lazon de la Jara provides an overview of myopia control techniques and reviews the case for retinal defocus; Paul Gifford and Kate Johnson describe one family's experiences using three different methods of correcting (and controlling) myopia; Sarah Guthrie reviews a paper (Anstice and Phillips, 2011) reporting encouraging results with dual-focus soft contact lenses; and Lindsey Paquette reports the results of a study demonstrating that children and youth are more than capable of wearing and caring for contact lenses.

  • Editorial - Myopia control: Is it possible?
  • Feature Article - Effect of dual-focus soft contact lens wear on axial myopia progression in children
  • Conference Highlights - Ease of contact lens fitting and training in a child and youth population
  • Clinical Insight - Use of contact lenses in myopia control: A case study

• Issue 04 | October 2011

  Presbyopia

  Contact lens manufacturers have responded to an aging worldwide population by working to develop more  effective contact lenses designed to correct presbyopia. In this edition of Contact Lens Update, Jill Woods relays the results of a study designed to compare objective consulting room tests with wearers’ “real life” experiences with monovision and multifocal lenses; Tony Chahine relays his approach in fitting lenses for a young presbyope with a high-performance, visually demanding job; Pauline Xu reviews a paper (Morgan et al. 2011) exploring the results of an international contact lens fitting survey; and Craig Woods explores the positive results of fitting patients with presbyopic correction.

  • Editorial - Presbyopia: a pause in focus
  • Feature Article - A review of an international survey of contact lens prescribing for presbyopia
  • Conference Highlights - Medium-addition, centre-near, silicone hydrogel multifocal lens compared to monovision: performance, adaptation and preference
  • Clinical Insight - A case report in the refitting of a presbyopic patient from monovision to aspheric multifocals, and then ultimately to translating RGP bifocals

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