Are you over 65? If so do you, or anyone of that age you know, wear varifocals? If so read on.
An Australian study says that falls are a leading cause of death and disability in the elderly, but research says 40% could be prevented if single=lens glasses were worn outside.
Researchers from Sydney recruited more than 600 people from age 65 with a history of galls. All of them used varifocals and not single lens glasses and wore them outside at least three times a week. Half were given single lens glasses for going out and the other half were not. In all, the first group had 8% fewer falls than the second. For those who regularly went outside, the difference was significant - with 40% fewer incidents.
Based on the findings, the authors recommend that older people who are active outside should be advised to switch between single and varifocal glasses - despite the inconvenience. The UK's College of Optometrists welcomed the study, but stressed some people did find it frustrating to have two pairs of glasses.
I've worn variofocals for some years now, although I only use them at home for watching television or for reading very small print but I can believe this study. Walking on uneven surfaces or going down stairs can be slightly disorientating.
Remember, if anyone you know wears variofocals, do ask them if they find wearing them outside difficult at times. If so, perhaps you could suggest they bought a pair of single-lens glasses for outdoors. After all they will be much cheaper than spending months recuperating from broken bones.