Protein and Microbial Determinations on Worn Contact Lenses Cleaned Conventionally Using the Lens2® Automatic Lens Cleaner
- Author:
Haliza Abdul Mutalib
;
Ahmad Rohi Ghazali
;
Noor Suhailah Ali
- Publication Type:Journal Article
- Keywords:
Contact lens, Protein deposit, Microbe, Lens2
- From:Malaysian Journal of Health Sciences
2008;6(1):11-21
- CountryMalaysia
- Language:English
-
Abstract:
The accumulation of tear film proteins as well as microbes colonization onto worn contact lenses can be eliminated conventionally by mechanical rubbing
during the cleaning process. Lens2® functions in rotation manner to loosen the deposits on the contact lens and has antimicrobial coating to keep lenses
away from contamination. The objective of this study was to determine the efficiency of Lens2® to remove deposited protein and reduce microbial contamination compared to conventional method. Twenty-eight subjects each
wore a pair of contact lens FDA Group 1 (Polymacon, SoftLens®38, Bausch & Lomb) for one month and cleaned them using multipurpose solution (COMPLETE® MoisturePLUSTM, Advanced Medical Optics) separately using two
different methods. The right lens was cleaned conventionally while the left lens
were cleaned using the Lens2®. The control group of thirteen subjects each wore a pair of contact lens for the same period and cleaned both conventionally.
These lenses and its cases were then analyzed for protein deposition using Bichinchoninic Acid Assay (BCA) Kit (Sigma, USA) in 96-well plate. Microbial
contamination was determined by culturing the samples on nutrient agar for bacteria and fungi and non-nutrient agar for amoeba isolation. The mean of total protein on control lenses (17.014 ± 13.246 μg/mL) was not significantly
different from those on the Lens2® (21.623 ± 19.127 μg/mL). There were also low growth numbers of amoeba in each group of samples. Interestingly, there
were no growths of amoeba from all Lens2® samples collected. There was also low growth numbers of bacteria in each sample group whereby Lens2® had the
lowest growth of bacteria. No growth of fungi was obtained from all samples.
The automatic lens cleaner, Lens2® was found to be as efficient as the conventional cleaning method. However, the Lens2® has additional advantage because of its antimicrobial material and need shorter time in the cleaning process as well as easy and effective.
- Full text:W020150619352146023554.pdf
