-- Mary Elizabeth Dallas
SUNDAY, Aug. 14 (HealthDay News) -- When it comes to soft
contact lenses, rubbing and rinsing before soaking overnight is the
best way to remove germs and prevent eye infection, according to
In the study, published in the August issue of
Optometry and Vision Science, the researchers noted this holds true even when using a "no-rub" disinfection solution.
"'Rub and rinse,' in conjunction with soaking of the lens, is the most effective regimen to recommend with all the multipurpose lens care solutions used with any type of contact lenses," the study authors, led by Hua Zhu, of Brien Holden Vision Institute in Sydney, Australia, explained in a journal news release.
In conducting the study, the researchers compared three methods
for cleaning soft contact lenses: rub and rinse, including a few
seconds of rubbing and rinsing followed by several hours of
soaking; rinse-only and soaking; or soaking only.
The investigators used common multipurpose disinfection
solutions (including those advertised as "no-rub" products) to
remove cultured bacteria, yeast, and mold cells from commercially
available soft contact lenses, including two types of silicone
The study authors found the solutions were more effective when
the "rub and rinse" technique was performed before soaking. In
contrast, "soaking only" left more germs on the lenses.
Moreover, the "rinse-only" technique improved cleaning results
when solutions containing Polyquad preservative were used.
"Rinse-only," however, was less effective in removing germs from
one of the two types of silicone hydrogel lenses tested called
Eliminating the rubbing step may leave more germs behind, the
study showed. "Once adhered to a surface, micro-organisms can
become less susceptible to disinfection," Hua and colleagues
The team concluded that the "rub and rinse" method is the best
way to remove germs from all types of soft contact lenses. This
step, they noted, is important to prevent eye infections in those
who wear contact lenses.
The American Academy of Ophthalmology provides more information
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
Copyright © EBSCO Publishing. All rights reserved.