PHP: Handling multiple submit buttons the same way, but with different arguments

I am trying to make a menu to assign contact lenses to patients. Every lens-option has a div with info about the lens, a range-input for strength and a submit button.

I would like to assign the ID of the lens to the patient in MySQL when the submit button of the specific lens is pressed. How can i handle this without having to copy-paste the if(isset($_POST[submitbutton#]) for every lens?

I am currently considering a switch-statement.

Any help is much appreciated.