the transilluminator is used for general transillumination of tissue and, more specifically, for scleral transillumination - it can be combined with a blue filter for illuminating the eye - for scleral transillumination, rest the distal end with its protective cap flat on the bulbus without exerting pressure - please note that intense light can be uncomfortable for the patient and may make it difficult to recognize areas of thin tumor growth - for transillumination of skin tissue use the instrument without the protective cap - to illuminate the eye, fit the blue filter and move the instrument as close as necessary to the eye without touching it