Yes, it’s possible to add an anti-glare (also known as anti-reflective) coating to existing glasses, but it typically requires a visit to an optician. The original lenses may need to be replaced to apply the coating effectively. This coating reduces glare from screens, artificial lighting, and sunlight, improving visual clarity and comfort. If you spend a lot of time working on a computer or reading in bright light, adding an anti-glare coating to your tortoise shell reading glasses can significantly enhance your reading experience.