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Tuesday / November 12.
HomeminewsFresh Insights Contact Lens Dryness

Fresh Insights Contact Lens Dryness

Contact lens dryness could be reduced by addressing lens dehydration, using silicone hydrogels, adding PVA or PVP into the lens, using rewetting agents and selecting contact lens comfort-enhancing disinfecting solution, according to a review by Professor Desmond Fonn.1 In addition a normal tear film is deemed critical for successful contact lens wear.2

Professor Wolffsohn, Deputy Executive Dean for the School of Life and Health Sciences at Aston University in the UK, presented Prof. Fonn’s findings to delegates at a series of events sponsored by Alcon.

He said the prevalence of dry eye in contact lens wearers is reported to be close to 50 per cent3 and the factors contributing to dry eye include lens characteristics, computer use and environmental conditions such as dry and dusty environments. In a study by Uchino et al.,4 he said contact lens wearers who worked with computers showed a significantly higher prevalence of clinically diagnosed dry eye compared with non lens-wearing computer users. Soft contact lens wearers who work with computers for longer periods of time were more likely to develop eye burning and scratchiness than non-CL wearers as reported in González-Méijome et al.5

Prof Wolffsohn outlined changes manufacturers have made to contact lenses and blister pack solutions to enhance wettability and stabilise the tear film and said Dailies AquaComfort Plus are one such lens.

Prof Wolffsohn outlined changes manufacturers have made to contact lenses and blister pack solutions to enhance wettability and stabilise the tear film…

References

1. Fonn D. Targeting contact lens induced dryness and discomfort: What properties will make lenses more comfortable? Optom Vis Sci, 2007;84:279-285.

2. Nichols JJ, Sinnott LT. Tear film, contact lens, and patient related factors associated with contact lens-related dry eye. Invest Ophthalmol Vis Sci 2006;47:1319 –28.

3. Guillon M, Maissa C. Dry Eye Symptomatology of soft contact lens wearers and nonwearers. Optom Vis Sci 2005;82(9):829-834

4. Uchino M, Schaumberg D, Dogru M et al. Prevalence of dry eye disease among Japanese visual display terminal users. Ophthalmology, 115 (2008), pp. 1982–1988

5. González-Méijome J, Parafita M et al. Symptoms in a Population of Contact Lens and Noncontact Lens Wearers Under Different Environmental Conditions. Optometry & Vision Science: April 2007 – Volume 84 – Issue 4 – pp E296-E302

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