What is a focimeter?
This machine takes a measurement of the prescription (or 'power') of your glasses.
It's often used by the optician as a starting point in the eye examination to help them understand what glasses you've been wearing, how effective they are, and what your previous prescription was.
It helps them decide whether or not to prescribe you new lenses.
You should seek professional advice if you are concerned about your eye health.Book an eye test