Profile and Frequency of Microbial Contamination of Contact Lens Cases

Abstract

Frequent replacement of lens cases may reduce microbial contamination. Future studies should specify the areas swabbed in the lens case. Better lens storage case design and additional hygiene attention need to be introduced to reduce contamination in these "risky" areas.

The Effectiveness of Various Cleaning Regimens and Current Guidelines in Contact Lens Case Biofilm Removal

“…Therefore, the present study further incorporated rubbing and tissuewiping in a sequential manner and evaluated the effect of using different rinsing agents, solution A and solution B, which are commonly used by lens wearers. 6 Consistently fewer bacteria were recovered from cases cleaned with MPDS containing solution A than from the cases cleaned with other rinsing agents tested (Figs. 2 and 3), and this is consistent with a study assessing the effect of disinfecting solutions against biofilm formed on contact lenses.…”

“…As a previous study has shown that the level of lens case contamination can be as high as 10 6 CFU, and that the lens case is often the most contaminated item of all lens accessories; 10 this marginal reduction in bacterial load after rinsing and air-drying may not be adequate to remove contaminants in lens cases. This suggests that cleaning steps additional to the current guidelines are necessary.…”

Rigid Gas permeable (RGP) contact lens induced microbial keratitis in a keratoconus patient: A case report.

“…10 Higher rates of complications are associated with men, with youth, with smokers, with longer periods of wear and with a lack of hand-washing. 22,23 Pseudomonas keratitis typically occurs in contact lens wearer due to microbes enter into the eye at the time of insertion or removal of contact lens through finger, from lid margins, from the care solutionsorfromthestoragecase.…”

The antibacterial activity of contact lens solutions against microbial keratitis

“…Although the incidence rates of contact lens-related microbial keratitis are low, this complication can cause poor visual outcome and blindness. [1,2] Contact lens-related microbial keratitis is commonly caused by Staphylococcus aureus and P. aeruginosa. [3] P. aeruginosa is a Gram-negative bacterium that is commonly found in many environments, including water.…”