A crooked online eyeglass merchant who’s already pleaded guilty to intimidating customers was busted yesterday for kiddie porn, authorities said.

Vitaly Borker, 36, faces up to eight years on the pornography charges, plus six years for threatening customers he ripped off.

Borker made headlines in 2010 when he was arrested for threatening a female customer, even e-mailing her a photo of her home, because she wanted a refund.

He pleaded guilty in Manhattan federal court to intimidating customers, but his sentencing was postponed until prosecutors could contact other victims.