It is significant, however, defenders of mandated vaccination (which I am not, but voluntary as likely being of short term help, while the fit and health should normally not have to risk it) can stated that (using rounded figures) out of
63,000,000 vaccinations in Canada, and 30,000 adverse events (23,000 being considered non-serious)
calculates (if I did it right) out to just be 0.05%. And 1,615 cases of blindness out of 485 million doses of COVID-19 vaccines is statistically negligible. I hope more will come to light as we go along.