The military interest in image intensifiers has traditionally been focused on low light level operations. Developments in laser technology are increasing the risk that the eyes of military personnel will be harmed by laser radiation. Many nations are developing protective technologies against lasers with unpredictable wavelengths. Reasonably safe devices, that allow visual contact with the surroundings, are likely to be on the market in 5 to 10 years time. Compared with conventional filter glasses these new devices will be more expensive and more cumbersome since they will contain a number of optical components. The use of image intensifiers during daytime is a reasonably safe practice for eye protection if the eyes are shielded against exposure beside the intensifier. Under low light conditions image intensifiers will also increase the safety margin. Within the next 5 years image intensifiers will often be the only feasible means to protect the eye. These facts should be considered in the defence materiel purchasing process and should also be pointed out during training of personnel. The use of image intensifiers, however, will impair the user´s comfort, visual capacity and endurance. The intensifier itself may be damaged or jammed and although the eyes are protected, the task under hand may become impossible.