The heir to eyeglass chain Cohen’s Fashion Optical is a cocaine-snorting party boy who charges the company for drugs, hookers and lavish trips to Vegas and the Dominican Republic, the company’s former consultant claims in a new lawsuit.

The $7.3 million suit — filed by fired Cohen consultant Robert Winston — alleges that eyeglass scion Jeffrey Cohen and his business partner, Joseph Volpe, “have regularly charged huge amounts of money on the corporate credit card to pay for strip clubs and prostitutes.”

Cohen, who is worth an estimated $100 million, also allegedly bought cocaine, marijuana and MDMA with corporate funds, and even went so far as to hook up a girlfriend with a no-show job, according to the Manhattan Supreme Court suit.

The girlfriend “receives large quantities of Vicodin” at her Massapequa home “so that Jeffrey Cohen can use the drug recreationally,” the suit claims.

Cohen fired Winston last month and replaced him with someone cheaper, the complaint alleges.

The suit also alleges that Cohen swiped $10,000 from various company accounts to help his favorite hooker immigrate to the United States so she could “service him” more often.

Winston also claims Cohen had a secretary help him divert funds from company coffers to pay for a number of trips — including eight jaunts to Las Vegas between 2013 and 2014, three trips to Saint Martin in June and July of this year, and two trips to the Dominican Republic in October and November.

“On one of the trips, Jeffrey Cohen forced one of the prostitutes to take MDMA by threatening not to pay her unless she did so,” the complaint adds, saying the woman became “violently ill” afterward.

“It is indeed ironic that Jeffrey Cohen, an eyeglass mogul, was usually so ‘high’ during these trips, that he could not see straight,” the complaint reads.

Cohen said Sunday, “I have nothing to say about that.” Volpe did not respond to a request for comment.

Winston’s attorney, Judd Burstein, said, “The complaint speaks for itself.”