Cleaning solution test doesn’t move contact lens wearers to tears

Researchers in the US have made a device to personalise contact lens care.

In the US, over 30 million people wear contact lenses and each year around 60,000 contract serious eye infections that put them at risk of going blind. Thorough cleaning is vital to prevent bacterial build-up on the lens but research has also shown that an individual’s tear chemistry affects the effectiveness of cleaning solutions.

Personalised care products can prevent serious eye infections caused by ineffective contact lens cleaning solutions

Currently user’s trial various contact lens materials and cleaning regimes to find the one best suited to them. Now, K Scott Phillips from the US Food and Drug Administration and Zhenyu Li at George Washington University, and their team, have incorporated user’s tears into a microfluidic chip that examines microbial growth on a lens against different cleaning solutions. Only a very small sample (1µl) is required – other tests need around 20µl or even 3ml – so there’s no need for patients to watch Black Beauty to generate enough tears.

The team use the device to demonstrate how tears impacts lens selection and care, and say it could be adapted for point-of-care testing in eye clinics.


This article is free to access until 08 April 2016

A Guan et al, Lab Chip, 2016, DOI: 10.1039/c6lc00034g

Related Content

Microfluidic approach to personalised cancer treatment

4 June 2015 Research

news image

Multiple myeloma drug response assay could be adapted for other cancers

1024 samples analysed on a single chip

16 December 2013 Research

news image

Dramatic reduction in reagent costs and process time will help increase access to personalised medicine

Most Commented

New antibiotic picked from nose bacteria

27 July 2016 Research

news image

Discovery suggests human microbiome may be an untapped source of antimicrobial compounds

Perovskite boosts silicon solar cell efficiency

25 November 2015 News and Analysis

news image

Silicon industry will be ‘beating a path to the door’ of inventors, says scientist