Optase Cooling Eye Mask - For Eye Inflammation Relief A simple to use reusable eye mask that delivers 10 minutes of cooling therapy Product Summary OPTASE Cooling Mask is a reusable mask that helps to relieve inflammation, due to seasonal allergies, and itchy, red, watery eyes and ...Optase Cooling Eye Mask - For Eye Inflammation Relief A simple to use reusable eye mask that delivers 10 minutes of cooling therapy Product Summary OPTASE Cooling Mask is a reusable mask that helps to relieve inflammation, due to seasonal allergies, and itchy, red, watery eyes and eyelids. The Cooling Mask is soft and comfortable to wear, and contains HydroCool beads which absorb cold energy. This is transferred to patient by applying the mask on the eyes.