Ultra-violet Ray Lamp This ultra-violet ray lamp was manufactured by Hanovia Ltd., and is described as "the prescription ultra-violet lamp". The lamp comes with a pair of protective glasses so as to prevent any damage to the patient's eyesight. Ultra-violet light therapy is performed to treat certain skin disorders, such as eczema and psoriasis. Exposure to UV rays must be well-controlled and monitored. Over-exposure can have serious side effects, and can potentially result in skin cancer. <a href="https://heritage.rcpsg.ac.uk/items/show/1130">Hanovia UV Ltd.; 1924-; Ultraviolet systems manufacturer</a> c. 20th Century 2000/3.120