Improved social welfare in the wake of the'industrial revolution'set in train in mid-18th century Britain an escalation in population numbers which has been sustained through to the end of the 20th century-and is projected to continue into the 21st century.
However, within the total population envelope the percentage-contribution of certain age groupings shows a striking pattern when viewed across nearly five centuries.
For 350 years, up to the end of the 19th century, the over-40 year old section of the population comprised a steady 25% of the total population count of England (latterly England and Wales) : over the same period the 60-plus section contributed nearly 10% of the total.
Throughout the ten decades of the 20th century these proportions have both increased, such that with the arrival of the next millennium a two-fold increase in the percentage-contribution of both age groups will have occurred : nearly one-half (over 24 million) of the population of England and Wales will be aged over 40, or more than one-fifth (around 1 million) will be aged over 60 years.
This'ageing'of the general population will have economic and socio-medical implications both at home and abroad, since this is a demographic trend which is present/projected in all countries of the European Union (as presently constituted).
The future practise of optometry will certainly be touched by these changes. (...)
Mots-clés Pascal : Presbytie, Siècle 20eme, Homme, Oeil pathologie, Trouble vision, Trouble réfraction oculaire
Mots-clés Pascal anglais : Presbyopia, Century 20th, Human, Eye disease, Vision disorder, Refractive error
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0404177
Code Inist : 002B09K. Création : 25/01/1999.