Reading glasses are made primarily for presbyopia which is an age-related eye disease most people experience around 35 to 45 years of age. Presbyopia is caused by a decreased elasticity in the eye's lens, making it more difficult to focus on objects in a close range. The Mass Vision "Intellect" are elegant, high-quality unisex reading glasses designed with stylish lightweight & durable frames. The lenses are scratch-impact resistant and ensure superb optical clarity.