45 LESS-LETHAL WEAPONS Weapons designed or intended for use on individuals or groups of individuals and which, in the course of expected or reasonably foreseen use, have a lower risk of causing death or serious injury than firearms. Less-lethal ammunition may be fired from conventional firearms. For the purpose of this Guidance, the term includes conventional firearms when they are used to discharge less-lethal ammunition, but not when they are used to discharge conventional bullets or other ammunition that would be likely to result in life-threatening injuries. MODERATE INJURY An injury that is not life-threatening, but is more severe than a minor injury, such as a small cut, abrasion or bruise.128 PERMANENT BLINDNESS The irreversible and uncorrectable loss of vision in at least one eye. Serious disability is equivalent to visual acuity of less than 20/200 Snellen measured using both eyes.129 RELATED EQUIPMENT Equipment that includes personal protective equipment used in law enforcement, such as shields, helmets, body armour or other equipment provided for law enforcement officials to minimize injury. Equipment may be general in nature or specific to certain situations, such as assemblies, and includes equipment that may be used remotely, automatically or autonomously, as well as information and communications technology used by law enforcement. The term also covers restraints used in custodial settings. See WHO, “Injury, poisoning or certain other consequences of external causes”, ICECI, June 2018. 129 Convention on Prohibitions or Restriction on the Use of Certain Conventional Weapons Which May Be Deemed to Be Excessively Injurious or to Have Indiscriminate Effects, Protocol on Blinding Laser Weapons, article 4. 128