diff --git a/code/controllers/subsystem/processing/quirks.dm b/code/controllers/subsystem/processing/quirks.dm
index a6c86a35763..5f5972bed35 100644
--- a/code/controllers/subsystem/processing/quirks.dm
+++ b/code/controllers/subsystem/processing/quirks.dm
@@ -11,10 +11,12 @@ PROCESSING_SUBSYSTEM_DEF(quirks)
 	var/list/quirks = list()		//Assoc. list of all roundstart quirk datum types; "name" = /path/
 	var/list/quirk_points = list()	//Assoc. list of quirk names and their "point cost"; positive numbers are good traits, and negative ones are bad
 	var/list/quirk_objects = list()	//A list of all quirk objects in the game, since some may process
+	var/list/quirk_blacklist = list() //A list a list of quirks that can not be used with each other. Format: list(quirk1,quirk2),list(quirk3,quirk4)
 
 /datum/controller/subsystem/processing/quirks/Initialize(timeofday)
 	if(!quirks.len)
 		SetupQuirks()
+	quirk_blacklist = list(list("Blind","Nearsighted"))
 	return ..()
 
 /datum/controller/subsystem/processing/quirks/proc/SetupQuirks()
diff --git a/code/datums/traits/negative.dm b/code/datums/traits/negative.dm
index ec8c5c60309..d950c4f73a6 100644
--- a/code/datums/traits/negative.dm
+++ b/code/datums/traits/negative.dm
@@ -305,3 +305,21 @@
 		dumb_thing = FALSE //only once per life
 		if(prob(1))
 			new/obj/item/reagent_containers/food/snacks/pastatomato(get_turf(H)) //now that's what I call spaghetti code
+
+/datum/quirk/blindness
+	name = "Blind"
+	desc = "You are completely blind, nothing can counteract this."
+	value = -4
+	gain_text = "<span class='danger'>You can't see anything.</span>"
+	lose_text = "<span class='notice'>You miraculously gain back your vision.</span>"
+	medical_record_text = "Subject has permanent blindness."
+
+/datum/quirk/blindness/add()
+	quirk_holder.become_blind(ROUNDSTART_TRAIT)
+
+/datum/quirk/blindness/on_spawn()
+	var/mob/living/carbon/human/H = quirk_holder
+	var/obj/item/clothing/glasses/sunglasses/blindfold/white/glasses = new(get_turf(H))
+	if(!H.equip_to_slot(glasses, SLOT_GLASSES)) //if you can't put it on the user's eyes, put it in their hands, otherwise put it on their eyes
+		H.put_in_hands(glasses)
+	H.regenerate_icons()
diff --git a/code/modules/client/preferences.dm b/code/modules/client/preferences.dm
index 17c3e8f603d..3cd6d573260 100644
--- a/code/modules/client/preferences.dm
+++ b/code/modules/client/preferences.dm
@@ -1003,6 +1003,12 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 				var/quirk = href_list["trait"]
 				if(!SSquirks.quirks[quirk])
 					return
+				for(var/V in SSquirks.quirk_blacklist) //V is a list
+					var/list/L = V
+					for(var/Q in all_quirks)
+						if((quirk in L) && (Q in L) && !(Q == quirk)) //two quirks have lined up in the list of the list of quirks that conflict with each other, so return (see quirks.dm for more details)
+							to_chat(user, "<span class='danger'>[quirk] is incompatible with [Q].</span>")
+							return
 				var/value = SSquirks.quirk_points[quirk]
 				if(value == 0)
 					if(quirk in neutral_quirks)
diff --git a/code/modules/clothing/glasses/_glasses.dm b/code/modules/clothing/glasses/_glasses.dm
index bbb8d687d90..1bff4890fe7 100644
--- a/code/modules/clothing/glasses/_glasses.dm
+++ b/code/modules/clothing/glasses/_glasses.dm
@@ -270,6 +270,33 @@
 	..()
 	user.cure_blind("blindfold_[REF(src)]")
 
+/obj/item/clothing/glasses/sunglasses/blindfold/white
+	name = "blind personnel blindfold"
+	desc = "Indicates that the wearer suffers from blindness."
+	icon_state = "blindfoldwhite"
+	item_state = "blindfoldwhite"
+	var/colored_before = FALSE
+
+/obj/item/clothing/glasses/sunglasses/blindfold/white/equipped(mob/living/carbon/human/user, slot)
+	if(ishuman(user) && slot == SLOT_GLASSES)
+		update_icon(user)
+		user.update_inv_glasses() //Color might have been changed by update_icon.
+	..()
+
+/obj/item/clothing/glasses/sunglasses/blindfold/white/update_icon(mob/living/carbon/human/user)
+	if(ishuman(user))
+		add_atom_colour("#[user.eye_color]", FIXED_COLOUR_PRIORITY)
+		colored_before = TRUE
+
+/obj/item/clothing/glasses/sunglasses/blindfold/white/worn_overlays(isinhands = FALSE, file2use)
+	. = list()
+	if(!isinhands && ishuman(loc))
+		var/mob/living/carbon/human/H = loc
+		var/mutable_appearance/M = mutable_appearance('icons/mob/eyes.dmi', "blindfoldwhite")
+		M.appearance_flags |= RESET_COLOR
+		M.color = "#[H.eye_color]"
+		. += M
+
 /obj/item/clothing/glasses/sunglasses/big
 	desc = "Strangely ancient technology used to help provide rudimentary eye cover. Larger than average enhanced shielding blocks flashes."
 	icon_state = "bigsunglasses"
diff --git a/icons/mob/eyes.dmi b/icons/mob/eyes.dmi
index 627d2bc94c0..21c53550129 100644
Binary files a/icons/mob/eyes.dmi and b/icons/mob/eyes.dmi differ
diff --git a/icons/obj/clothing/glasses.dmi b/icons/obj/clothing/glasses.dmi
index e7bec8dbe4e..8505c01189a 100644
Binary files a/icons/obj/clothing/glasses.dmi and b/icons/obj/clothing/glasses.dmi differ