Article having filters selected to have metameric transmission spectra and a method for determining said filters

A method for determining a first filter intended to be placed in front of an eye of a wearer and a second filter, different from the first filter, intended to be placed in front of an eye of a wearer, said first and second filters being intended to be positioned in a non-superposed configuration, the method comprising the following steps:

• providing a first transmission spectrum;
• determining metameric transmission spectra of said first transmission spectrum;
• determining said first filter based on said first transmission spectrum or based on a first metameric transmission spectrum selected from the metameric transmission spectra of said first transmission spectrum;
• and
• determining said second filter based on a second metameric transmission spectrum selected from the metameric transmission spectra of said first transmission spectrum,
• wherein said first transmission spectrum and said metameric transmission spectra of said first transmission spectrum provide a continuous transmission which does not have transmission peaks leading the transmission to drop to 0% for one or more wavelength ranges between 450 and 650 nm.