Any changes that occur to our vision are often linked to getting older, which is why people over 40 should have an eye test every two years. Watch how this Tokkel learns a simple lesson about preventing glaucoma. Find out what causes glaucoma http://www.nhs.uk/Conditions/Glaucoma/Pages/Causes.aspx
Questions about The Tokkels: eye health
Want more info about The Tokkels: eye health?
Get free advice from education experts and Noodle community members.