Robert Weiss, 58, is charged with four counts of unauthorized video recording, authorities said. View Full Caption Chicago Police Department

COOK COUNTY CRIMINAL COURTHOUSE — A Chicago eye surgeon is accused of secretly videotaping women at Advocate Illinois Masonic Medical Center and the Chicago Eye Institute after an employee found a hidden camera in a toilet tank.

The woman, a 27-year-old employee at the Chicago Eye Institute, noticed what appeared to be a camera lens peeking out from a crack in the toilet tank, according to a police report. She removed the lid from the tank and discovered a small camera attached via Velcro to the tank wall.

A memory disc in the camera revealed images of the employee as well as three other female victims inside bathrooms or locker rooms at the two Chicago medical centers, according to the report.

Robert Weiss, a 58-year-old eye surgeon, was later caught on surveillance video placing one of the hidden cameras at Illinois Masonic, prosecutors said.

Weiss was arrested and charged with filming the four women without their knowledge at Illinois Masonic, 836 W. Webster Ave., and at the Chicago Eye Institute, 3982 N. Milwaukee Ave., between March 24 and April 2.

He appeared in bond court Wednesday on four felony counts of unauthorized video recording, authorities said.

Officials with Illinois Masonic and the Chicago Eye Institute could not immediately be reached for comment Tuesday.

A Cook County judge set bail at $75,000.

Weiss normally treated about 100 patients weekly at the Chicago Eye Institute and at a practice located within Illinois Masonic, said his defense attorney, Aaron Goldstein.

Goldstein said Weiss is not guilty of any of the charges.