This Specsavers ad tests your eyesight with deliberate mistakes

Specsavers' latest ad from Australia not only follows the optician brand's long-running theme of someone gettings things horribly wrong because they can't see properly--it actually tests your vision as you watch.

The new spot, by Cummins & Partners, contains over 15 deliberate "mistakes" as we follow the story of a devoted father who decides to transform his daughters' playhouse into a pink "princess castle," only he accidentally transforms the dog kennel. Tim Bullock of Scoundrel directs.

Viewers are invited to see if they can spot the mistakes and enter an online contest: three viewers per week will win a thousand Australian dollars over the next five weeks.

Specsavers' marketing director, Sarah McInnes, says in a statement: "The ad has been created to highlight the importance of sharp vision and if you can't spot any mistakes, it's time to visit your local Specsavers for an eye test."

The campaign is running in Australia and New Zealand, online, on TV and in Specsavers' 376 stores.