Photochromic lenses, also known as transition lenses, are a type of spectacle lens that can automatically adjust their level of darkness or tint in response to changing lighting conditions. These lenses contain special photochromic compounds that react to ultraviolet (UV) light. When exposed to UV radiation, such as sunlight, the lenses darken, providing sun protection and reducing glare. When the UV light diminishes, the lenses gradually return to their clear state.

Costume contact lenses, often called decorative or coloured contact lenses, are specially designed contact lenses used for cosmetic purposes to change the appearance of your eyes. These lenses can be used to achieve various effects, such as changing your eye colour, creating a unique look for costumes, enhancing a character for cosplay, or adding a dramatic effect to your overall appearance.

Cutler and Gross were founded on the principle that when it comes to eyewear, it’s not just about how we see the world, it’s about how others see us. For over 50 years now, we have been at the forefront of optical design - as trailblazers, disrupters and pioneers whose legacy has been much imitated, but never surpassed.