That is a very good question.
I must stress that this report contains a lot of expert information. It was prepared by experts who work for a subsidiary of Deloitte in Australia. It's very accurate, timely data.
At the Canadian Association of Optometrists, we prefer to quote the $15.6‑billion figure, because these are very tangible costs. These are health and productivity costs.
The $30‑million figure is for quality of life losses. It is not really about a tangible loss of productivity, nor costs. Those who prepared the report have a methodology for quantifying the loss of quality of life.
The Canadian Association of Optometrists prefers to refer to the $15.6‑billion figure. This is what we mentioned in our comments.