OK, let's clarify a few things.
1. To get into the infantry you must have a visual category of V3. This means you must have no worse 6/120 (20/400) vision in either eye, uncorrected. Corrected, you must have 6/6 (20/20) in your better eye, and no less than 6/9 (20/30) in the other.
Refs: http://www.dnd.ca/health/policies/med_standards/pdf/Engraph/cfp154_annexAappen_e.pdf
2. Legal Blindness is when a person's best-corrected vision is 6/60 (20/200) or worse.
(Legal Blindness as defined in Blind Persons Regulations, Consolidated Regulations of Canada 1978, Chapter 371)
3. In a typical Snellen eye chart such as this one: http://faculty.plattsburgh.edu/wendy.braje/424/snellen.jpg which is often what is used by the military, the top letter "E" is at 6/60 (20/200). So, depending on if you can read it with each eye independantly, and depending what you scored on your corrected vision, you may have a chance of getting infantry.
So, if your corrected vision is 20/200 in your best eye, or worse, that you are legally blind. This means that you can qualify as a legally blind person with the Canadian National Institute for the blind (CNIB) and are eligible for certain concessions afforded to persons with disabilities (more information here: http://www.cnib.ca/divisions/nfllrd/services/concessions/list.htm )
All that being said, I would highly recommend, if you can afford it, to get laser correction. Vision that bad can cause a LOT of problems for you in the military, particularly if you're in a combat arms unit.
EDITED - removed the mistake, sorry for the confusion.