As the groups mentioned in the article below share circa 75% of the UK optical market, the remaining 25% needs to think very carefully about how their own database is responding to the onslaught of messages like it and take action to reduce their impact.
Not that long ago the split was 50:50 not 75:25, doing nothing is not a viable option.
http://www.dailymail.co.uk/health/article-2134165/Can-trust-70-specs-sup...








