Call the proper proc

code/datums/brain_damage/severe.dm

@@ -165,7 +165,7 @@
 		stress = max(stress - 4, 0)
 
 /datum/brain_trauma/severe/monophobia/proc/check_alone()
-	if(HAS_TRAIT(owner, TRAIT_BLIND))
+	if(owner.is_blind())
 		return TRUE
 	for(var/mob/M in oview(owner, 7))
 		if(!isliving(M)) //ghosts ain't people

code/datums/diseases/advance/symptoms/vision.dm

@@ -63,7 +63,7 @@ Bonus
 					M.become_nearsighted(EYE_DAMAGE)
 				if(prob(eyes.damage - 10 + 1))
 					if(!remove_eyes)
-						if(!HAS_TRAIT(M, TRAIT_BLIND))
+						if(!M.is_blind())
 							to_chat(M, "<span class='userdanger'>You go blind!</span>")
 							eyes.applyOrganDamage(eyes.maxHealth)
 					else

code/datums/dna.dm

@@ -647,7 +647,7 @@
 
 
 /mob/living/carbon/human/proc/something_horrible_mindmelt()
-	if(!HAS_TRAIT(src, TRAIT_BLIND))
+	if(!is_blind())
 		var/obj/item/organ/eyes/eyes = locate(/obj/item/organ/eyes) in internal_organs
 		if(!eyes)
 			return

code/game/objects/items.dm

@@ -530,7 +530,7 @@ GLOBAL_VAR_INIT(rpg_loot_items, FALSE)
 		M.adjust_blurriness(15)
 		if(M.stat != DEAD)
 			to_chat(M, "<span class='danger'>Your eyes start to bleed profusely!</span>")
-		if(!(HAS_TRAIT(M, TRAIT_BLIND) || HAS_TRAIT(M, TRAIT_NEARSIGHT)))
+		if(!(M.is_blind() || HAS_TRAIT(M, TRAIT_NEARSIGHT)))
 			to_chat(M, "<span class='danger'>You become nearsighted!</span>")
 		M.become_nearsighted(EYE_DAMAGE)
 		if(prob(50))

code/game/objects/items/devices/flashlight.dm

@@ -86,7 +86,7 @@
 				else
 					user.visible_message("<span class='warning'>[user] directs [src] to [M]'s eyes.</span>", \
 										 "<span class='danger'>You direct [src] to [M]'s eyes.</span>")
-					if(M.stat == DEAD || (HAS_TRAIT(M, TRAIT_BLIND)) || !M.flash_act(visual = 1)) //mob is dead or fully blind
+					if(M.stat == DEAD || (M.is_blind()) || !M.flash_act(visual = 1)) //mob is dead or fully blind
 						to_chat(user, "<span class='warning'>[M]'s pupils don't react to the light!</span>")
 					else if(M.dna && M.dna.check_mutation(XRAY))	//mob has X-ray vision
 						to_chat(user, "<span class='danger'>[M]'s pupils give an eerie glow!</span>")

code/game/objects/items/devices/scanners.dm

@@ -256,7 +256,7 @@ GENE SCANNER
 		message = "\n<span class='alert ml-2'>Subject does not have eyes.</span>"
 		if(istype(eyes))
 			message = ""
-			if(HAS_TRAIT(C, TRAIT_BLIND))
+			if(C.is_blind())
 				message += "\n<span class='alert ml-2'>Subject is blind.</span>"
 			if(HAS_TRAIT(C, TRAIT_NEARSIGHT))
 				message += "\n<span class='alert ml-2'>Subject is nearsighted.</span>"

code/modules/clothing/glasses/_glasses.dm

@@ -46,7 +46,7 @@
 	if(ishuman(src.loc))
 		var/mob/living/carbon/human/H = src.loc
 		var/obj/item/organ/eyes/eyes = H.getorganslot(ORGAN_SLOT_EYES)
-		if(!(HAS_TRAIT(H, TRAIT_BLIND)))
+		if(!H.is_blind())
 			if(H.glasses == src)
 				to_chat(H, "<span class='danger'>[src] overloads and blinds you!</span>")
 				H.flash_act(visual = 1)

code/modules/mob/living/carbon/carbon_defense.dm

@@ -342,7 +342,7 @@
 					become_nearsighted(EYE_DAMAGE)
 
 				else if(prob(eyes.damage - 25))
-					if(!HAS_TRAIT(src, TRAIT_BLIND))
+					if(!is_blind())
 						to_chat(src, "<span class='warning'>You can't see anything!</span>")
 					eyes.applyOrganDamage(eyes.maxHealth)
 

code/modules/mob/living/carbon/human/examine.dm

@@ -277,7 +277,7 @@
 				if(mood.sanity <= SANITY_DISTURBED)
 					msg += "[t_He] seem[p_s()] distressed.\n"
 					SEND_SIGNAL(user, COMSIG_ADD_MOOD_EVENT, "empath", /datum/mood_event/sad_empath, src)
-				if (HAS_TRAIT(src, TRAIT_BLIND))
+				if (is_blind())
 					msg += "[t_He] appear[p_s()] to be staring off into space.\n"
 				if (HAS_TRAIT(src, TRAIT_DEAF))
 					msg += "[t_He] appear[p_s()] to not be responding to noises.\n"

code/modules/mob/living/living_defense.dm

@@ -402,7 +402,7 @@
 /mob/living/proc/flash_act(intensity = 1, override_blindness_check = 0, affect_silicon = 0, visual = 0, type = /obj/screen/fullscreen/flash)
 	if(HAS_TRAIT(src, TRAIT_NOFLASH))
 		return FALSE
-	if(get_eye_protection() < intensity && (override_blindness_check || !(HAS_TRAIT(src, TRAIT_BLIND))))
+	if(get_eye_protection() < intensity && (override_blindness_check || !is_blind()))
 		overlay_fullscreen("flash", type)
 		addtimer(CALLBACK(src, .proc/clear_fullscreen, "flash", 25), 25)
 		return TRUE

code/modules/reagents/chemistry/reagents/alcohol_reagents.dm

@@ -233,7 +233,7 @@ All effects don't start immediately, but rather get worse over time; the rate is
 
 	if(prob(5) && iscarbon(M))
 		var/obj/item/organ/eyes/eyes = M.getorganslot(ORGAN_SLOT_EYES)
-		if(HAS_TRAIT(M, TRAIT_BLIND))
+		if(M.is_blind())
 			if(istype(eyes))
 				eyes.Remove(M)
 				eyes.forceMove(get_turf(M))