Videos of boys using public toilets were found on the computer of a Perth child psychiatrist who is alleged to have committed a similar offence in Canada, a court is told.

Aaron Voon was released on bail by Perth magistrates after appearing on a charge of possessing child exploitation material.

The police prosecutor told the court the charge was laid against Voon last week when he arrived back in Perth from Canada where he is facing a charge of making and possessing child pornography.

He was arrested outside a movie theatre in Edmonton, Alberta, on May 22 over allegations he had tried to record a young boy in a pubic toilet.

Voon returned to Perth after being granted bail by the Canadian authorities.

Perth Magistrates Court was told a search of electronic devices from his home and office in Perth found 409 child exploitation images and 12 recordings of young boys urinating.

The prosecutor said one of the videos showed Voon following a child from a movie theatre lobby into a toilet.

It was alleged that in some others, he was seen as the recording was finishing.

Voon was released on $50,000 bail with a similar surety and had to surrender his passport.

He is also banned from having any electronic devices, including a mobile phone or camera, and he is not allowed to work with any children.

Voon is due back in court next month.