Why have the number of eye tests decreased in England?

NHS statistics have shown that eye tests in England fell by 3.2% between April and September last year.
London and the West Midlands showed the largest decline.
As an optometrist have you felt these declines in eye test? Are you worried that people are missing out on vital tests? With the introduction of free eye test vouchers and reduced eye test vouchers on popular coupon websites, you would have thought that eye tests would have increased. However the General Ophthalmic Services Activity Statistics document also revealed the number of optical vouchers issued over the same period fell from 2.3 million to 2.1 million year-on-year.
Please let Flame Health know your thoughts.