diff --git a/code/datums/vision_override.dm b/code/datums/vision_override.dm
new file mode 100644
index 00000000000..a634a77f6fb
--- /dev/null
+++ b/code/datums/vision_override.dm
@@ -0,0 +1,16 @@
+/datum/vision_override
+	var/name = "vision override"
+	var/see_in_dark = 0
+	var/see_invisible = 0
+	var/light_sensetive = 0
+	var/sight_flags = 0
+
+/datum/vision_override/nightvision
+	see_in_dark = 8
+	see_invisible = SEE_INVISIBLE_MINIMUM
+
+/datum/vision_override/nightvision/thermals
+	sight_flags = SEE_MOBS
+
+/datum/vision_override/nightvision/thermals/ling_augmented_eyesight
+	light_sensetive = 1
\ No newline at end of file
diff --git a/code/game/gamemodes/changeling/changeling_power.dm b/code/game/gamemodes/changeling/changeling_power.dm
index 496688835bb..a365a45673c 100644
--- a/code/game/gamemodes/changeling/changeling_power.dm
+++ b/code/game/gamemodes/changeling/changeling_power.dm
@@ -19,6 +19,9 @@
 /obj/effect/proc_holder/changeling/proc/on_purchase(var/mob/user)
 	return
 
+/obj/effect/proc_holder/changeling/proc/on_refund(mob/user)
+	return
+
 /obj/effect/proc_holder/changeling/Click()
 	var/mob/user = usr
 	if(!user || !user.mind || !user.mind.changeling)
diff --git a/code/game/gamemodes/changeling/evolution_menu.dm b/code/game/gamemodes/changeling/evolution_menu.dm
index 0ffce0ba172..9475dda8035 100644
--- a/code/game/gamemodes/changeling/evolution_menu.dm
+++ b/code/game/gamemodes/changeling/evolution_menu.dm
@@ -406,8 +406,10 @@ var/list/sting_paths
 			mind.changeling.changeling_speak = 0
 			mind.changeling.reset()
 			for(var/obj/effect/proc_holder/changeling/p in mind.changeling.purchasedpowers)
-				if(!(p.dna_cost == 0 && keep_free_powers))
-					mind.changeling.purchasedpowers -= p
+				if(p.dna_cost == 0 && keep_free_powers)
+					continue
+				mind.changeling.purchasedpowers -= p
+				p.on_refund(src)
 
 /datum/changeling/proc/has_sting(obj/effect/proc_holder/changeling/power)
 	for(var/obj/effect/proc_holder/changeling/P in purchasedpowers)
diff --git a/code/game/gamemodes/changeling/powers/augmented_eyesight.dm b/code/game/gamemodes/changeling/powers/augmented_eyesight.dm
index d40da71fff1..d303d022753 100644
--- a/code/game/gamemodes/changeling/powers/augmented_eyesight.dm
+++ b/code/game/gamemodes/changeling/powers/augmented_eyesight.dm
@@ -7,18 +7,15 @@
 	helptext = "Grants us night vision and thermal vision. It may be toggled on or off."
 	chemical_cost = 0
 	dna_cost = 2 //Would be 1 without thermal vision
-	var/active = 0 //Whether or not vision is enhanced
 
 /obj/effect/proc_holder/changeling/augmented_eyesight/sting_action(var/mob/user)
-	active = !active
-	if(active)
+	if(!user.vision_type)
 		user << "<span class='notice'>We feel a minute twitch in our eyes, and darkness creeps away.</span>"
+		user.vision_type = new /datum/vision_override/nightvision/thermals/ling_augmented_eyesight
 	else
 		user << "<span class='notice'>Our vision dulls. Shadows gather.</span>"
-		user.sight &= ~SEE_MOBS
-	while(active)
-		user.see_in_dark = 8
-		user.see_invisible = 2
-		user.sight |= SEE_MOBS
-		sleep(1) //BAD THINGS HAPPEN WITHOUT THIS.
+		user.vision_type = null
 	return 1
+
+/obj/effect/proc_holder/changeling/augmented_eyesight/on_refund(mob/user)
+	user.vision_type = null
\ No newline at end of file
diff --git a/code/game/gamemodes/shadowling/shadowling.dm b/code/game/gamemodes/shadowling/shadowling.dm
index 1cc2cd9d469..05d778c8b5a 100644
--- a/code/game/gamemodes/shadowling/shadowling.dm
+++ b/code/game/gamemodes/shadowling/shadowling.dm
@@ -135,6 +135,7 @@ Made by Xhuis
 	var/mob/living/carbon/human/S = shadow_mind.current
 	shadow_mind.AddSpell(new /obj/effect/proc_holder/spell/targeted/shadowling_hatch)
 	shadow_mind.AddSpell(new /obj/effect/proc_holder/spell/targeted/enthrall)
+	shadow_mind.AddSpell(new /obj/effect/proc_holder/spell/targeted/shadow_vision)
 	spawn(0)
 		shadow_mind.current.add_language("Shadowling Hivemind")
 		update_shadow_icons_added(shadow_mind)
@@ -154,7 +155,7 @@ Made by Xhuis
 		new_thrall_mind.current.add_language("Shadowling Hivemind")
 		new_thrall_mind.AddSpell(new /obj/effect/proc_holder/spell/targeted/lesser_glare)
 		new_thrall_mind.AddSpell(new /obj/effect/proc_holder/spell/targeted/lesser_shadow_walk)
-		//new_thrall_mind.AddSpell(new /obj/effect/proc_holder/spell/targeted/thrall_vision) //Uncomment when vision code is unfucked.
+		new_thrall_mind.AddSpell(new /obj/effect/proc_holder/spell/targeted/shadow_vision/thrall)
 		new_thrall_mind.current << "<span class='shadowling'><b>You see the truth. Reality has been torn away and you realize what a fool you've been.</b></span>"
 		new_thrall_mind.current << "<span class='shadowling'><b>The shadowlings are your masters.</b> Serve them above all else and ensure they complete their goals.</span>"
 		new_thrall_mind.current << "<span class='shadowling'>You may not harm other thralls or the shadowlings. However, you do not need to obey other thralls.</span>"
@@ -210,7 +211,7 @@ Made by Xhuis
 	else
 		shadowling_dead = 1 //but shadowling was kill :(
 		return 1
-		
+
 /datum/game_mode/proc/remove_shadowling(datum/mind/ling_mind)
 	if(!istype(ling_mind) || !(ling_mind in shadows)) return 0
 	update_shadow_icons_removed(ling_mind)
@@ -304,7 +305,7 @@ Made by Xhuis
 	flesh_color = "#222222"
 
 	flags = NO_BLOOD | NO_BREATHE | NO_SCAN | NO_INTORGANS
-	burn_mod = 2 //2x burn damage
+	burn_mod = 1.5 //1.5x burn damage, 2x is excessive
 
 /datum/game_mode/proc/update_shadow_icons_added(datum/mind/shadow_mind)
 	spawn(0)
diff --git a/code/game/gamemodes/shadowling/shadowling_abilities.dm b/code/game/gamemodes/shadowling/shadowling_abilities.dm
index f1778935ef8..9decbe31e72 100644
--- a/code/game/gamemodes/shadowling/shadowling_abilities.dm
+++ b/code/game/gamemodes/shadowling/shadowling_abilities.dm
@@ -170,8 +170,8 @@
 		user.visible_message("<span class='warning'>[user] appears from nowhere!</span>", "<span class='shadowling'>Your shadowy guise slips away.</span>")
 		user.alpha = initial(user.alpha)
 
-/*
-/obj/effect/proc_holder/spell/targeted/thrall_vision //Uncomment this if we ever update our vision code to not be absolute garbage.
+
+/obj/effect/proc_holder/spell/targeted/shadow_vision
 	name = "Darksight"
 	desc = "Gives you night vision."
 	panel = "Thrall Abilities"
@@ -179,23 +179,22 @@
 	range = -1
 	include_user = 1
 	clothes_req = 0
-	var/active = 0
+	var/datum/vision_override/vision_path = /datum/vision_override/nightvision/thermals
 
-/obj/effect/proc_holder/spell/targeted/thrall_vision/cast(list/targets)
+/obj/effect/proc_holder/spell/targeted/shadow_vision/cast(list/targets)
 	for(var/mob/living/user in targets)
 		if(!istype(user) || !ishuman(user))
 			return
 		var/mob/living/carbon/human/H = user
-		active = !active
-		if(active)
-			user << "<span class='notice'>You shift the nerves in your eyes, allowing you to see in the dark.</span>"
-			H.see_in_dark = 8
-			H.dna.species.invis_sight = SEE_INVISIBLE_MINIMUM
+		if(!H.vision_type)
+			H << "<span class='notice'>You shift the nerves in your eyes, allowing you to see in the dark.</span>"
+			H.vision_type = new vision_path
 		else
-			user << "<span class='notice'>You return your vision to normal.</span>"
-			H.see_in_dark = 0
-			H.dna.species.invis_sight = initial(H.dna.species.invis_sight)
-*/
+			H << "<span class='notice'>You return your vision to normal.</span>"
+			H.vision_type = null
+
+/obj/effect/proc_holder/spell/targeted/shadow_vision/thrall
+	vision_path = /datum/vision_override/nightvision
 
 /obj/effect/proc_holder/spell/aoe_turf/flashfreeze
 	name = "Icy Veins"
diff --git a/code/game/gamemodes/shadowling/shadowling_items.dm b/code/game/gamemodes/shadowling/shadowling_items.dm
index e494c7507f0..863ea9c43a6 100644
--- a/code/game/gamemodes/shadowling/shadowling_items.dm
+++ b/code/game/gamemodes/shadowling/shadowling_items.dm
@@ -66,17 +66,13 @@
 	flags = ABSTRACT | NODROP
 
 
-/obj/item/clothing/glasses/night/shadowling
+/obj/item/clothing/glasses/shadowling
 	name = "crimson eyes"
 	desc = "A shadowling's eyes. Very light-sensitive and can detect body heat through walls."
 	icon = null
 	icon_state = null
 	item_state = null
 	origin_tech = null
-	vision_flags = SEE_MOBS
-	darkness_view = 8
-	see_darkness = 0
-	invisa_view = 2
 	unacidable = 1
 	flash_protect = -1
 	flags = ABSTRACT | NODROP
diff --git a/code/game/gamemodes/shadowling/special_shadowling_abilities.dm b/code/game/gamemodes/shadowling/special_shadowling_abilities.dm
index bb4fc80c7d6..72ba07fbdc7 100644
--- a/code/game/gamemodes/shadowling/special_shadowling_abilities.dm
+++ b/code/game/gamemodes/shadowling/special_shadowling_abilities.dm
@@ -79,6 +79,8 @@ var/list/possibleShadowlingNames = list("U'ruan", "Y`shej", "Nex", "Hel-uae", "N
 				H.undershirt = "None"
 				H.socks = "None"
 				H.faction |= "faithless"
+				if(!H.weakeyes)
+					H.weakeyes = 1
 
 				H.equip_to_slot_or_del(new /obj/item/clothing/under/shadowling(usr), slot_w_uniform)
 				H.equip_to_slot_or_del(new /obj/item/clothing/shoes/shadowling(usr), slot_shoes)
@@ -86,7 +88,7 @@ var/list/possibleShadowlingNames = list("U'ruan", "Y`shej", "Nex", "Hel-uae", "N
 				H.equip_to_slot_or_del(new /obj/item/clothing/head/shadowling(usr), slot_head)
 				H.equip_to_slot_or_del(new /obj/item/clothing/gloves/shadowling(usr), slot_gloves)
 				H.equip_to_slot_or_del(new /obj/item/clothing/mask/gas/shadowling(usr), slot_wear_mask)
-				H.equip_to_slot_or_del(new /obj/item/clothing/glasses/night/shadowling(usr), slot_glasses)
+				H.equip_to_slot_or_del(new /obj/item/clothing/glasses/shadowling(usr), slot_glasses)
 				H.set_species("Shadowling")
 
 				sleep(10)
diff --git a/code/game/machinery/flasher.dm b/code/game/machinery/flasher.dm
index e32146ff69f..f22c68bb0f0 100644
--- a/code/game/machinery/flasher.dm
+++ b/code/game/machinery/flasher.dm
@@ -79,6 +79,9 @@
 			continue
 
 		O.Weaken(strength)
+		if(O.weakeyes)
+			O.Weaken(strength * 1.5)
+			O.visible_message("<span class='disarm'><b>[O]</b> gasps and shields their eyes!</span>")
 		if (istype(O, /mob/living/carbon/human))
 			var/mob/living/carbon/human/H = O
 			var/obj/item/organ/eyes/E = H.internal_organs_by_name["eyes"]
diff --git a/code/game/objects/items/devices/flash.dm b/code/game/objects/items/devices/flash.dm
index 42653c3ff1b..3d37f120bc6 100644
--- a/code/game/objects/items/devices/flash.dm
+++ b/code/game/objects/items/devices/flash.dm
@@ -77,6 +77,8 @@
 
 /obj/item/device/flash/proc/flash_carbon(var/mob/living/carbon/M, var/mob/user = null, var/power = 5, convert = 1)
 	add_logs(M, user, "flashed", object="[src.name]")
+	if(M.weakeyes)
+		M.Weaken(3) //quick weaken bypasses eye protection but has no eye flash
 	var/safety = M:eyecheck()
 	if(safety <= 0)
 		M.confused += power
@@ -85,6 +87,9 @@
 			terrible_conversion_proc(M, user)
 			M.Stun(1)
 			user.visible_message("<span class='disarm'>[user] blinds [M] with the [src.name]!</span>")
+			if(M.weakeyes)
+				M.Stun(2)
+				M.visible_message("<span class='disarm'><b>[M]</b> gasps and shields their eyes!</span>")
 		return 1
 	else
 		if(user)
diff --git a/code/game/objects/items/devices/laserpointer.dm b/code/game/objects/items/devices/laserpointer.dm
index ec5f18283a8..a43928a5689 100644
--- a/code/game/objects/items/devices/laserpointer.dm
+++ b/code/game/objects/items/devices/laserpointer.dm
@@ -101,6 +101,8 @@
 
 				//eye target check
 				outmsg = "<span class='notice'>You blind [C] by shining [src] in their eyes.</span>"
+				if(C.weakeyes)
+					C.Stun(1)
 				var/eye_prot = C.eyecheck()
 				if(C.blinded || eye_prot >= 2)
 					eye_prot = 4
diff --git a/code/game/objects/items/weapons/grenades/flashbang.dm b/code/game/objects/items/weapons/grenades/flashbang.dm
index 7eca6aa719b..ad56e541fd4 100644
--- a/code/game/objects/items/weapons/grenades/flashbang.dm
+++ b/code/game/objects/items/weapons/grenades/flashbang.dm
@@ -36,9 +36,17 @@
 				ear_safety++
 
 //Flash
+	var/mob/living/carbon/human/H = M
+	var/obj/item/organ/eyes/E = H.internal_organs_by_name["eyes"]
+	if(M.weakeyes)
+		M.visible_message("<span class='disarm'><b>[M]</b> screams and collapses!</span>")
+		M << "<span class='userdanger'>AAAAGH! IT BURNS!</span>"
+		M.Weaken(15) //hella stunned
+		M.Stun(15)
+		if(E)
+			E.damage += 8
+
 	if(!eye_safety && ishuman(M))
-		var/mob/living/carbon/human/H = M
-		var/obj/item/organ/eyes/E = H.internal_organs_by_name["eyes"]
 		flick("e_flash", M.flash)
 		if (E) E.damage += rand(1, 3)
 		M.Stun(max(10/distance, 3))
diff --git a/code/modules/mob/living/carbon/human/human_defines.dm b/code/modules/mob/living/carbon/human/human_defines.dm
index eead644cc58..ef88db4a6dc 100644
--- a/code/modules/mob/living/carbon/human/human_defines.dm
+++ b/code/modules/mob/living/carbon/human/human_defines.dm
@@ -84,4 +84,4 @@
 	var/fire_dmi = 'icons/mob/OnFire.dmi'
 	var/fire_sprite = "Standing"
 
-	var/datum/body_accessory/body_accessory = null
+	var/datum/body_accessory/body_accessory = null
\ No newline at end of file
diff --git a/code/modules/mob/living/carbon/human/life.dm b/code/modules/mob/living/carbon/human/life.dm
index 875a3a85260..c9d441d77e8 100644
--- a/code/modules/mob/living/carbon/human/life.dm
+++ b/code/modules/mob/living/carbon/human/life.dm
@@ -768,7 +768,7 @@ var/global/list/brutefireloss_overlays = list("1" = image("icon" = 'icons/mob/sc
 			light_amount = T.get_lumcount()*10
 		if(light_amount > species.light_dam && !incorporeal_move) //if there's enough light, start dying
 			if(species.light_effect_amp)
-				adjustFireLoss(5) //This gets doubled by Shadowling's innate fire weakness, so it ends up being 10.
+				adjustFireLoss(4.7) //This gets multiplied by 1.5 due to Shadowling's innate fire weakness, so it ends up being about 7.
 			else
 				adjustFireLoss(1)
 				adjustBruteLoss(1)
@@ -968,7 +968,7 @@ var/global/list/brutefireloss_overlays = list("1" = image("icon" = 'icons/mob/sc
 		var/obj/item/organ/vision
 		if(species.vision_organ)
 			vision = internal_organs_by_name[species.vision_organ]
-		
+
 		if(!species.vision_organ) // Presumably if a species has no vision organs, they see via some other means.
 			eye_blind =  0
 			blinded =    0
@@ -977,7 +977,7 @@ var/global/list/brutefireloss_overlays = list("1" = image("icon" = 'icons/mob/sc
 			eye_blind =  1
 			blinded =    1
 			eye_blurry = 1
-		else 
+		else
 			//blindness
 			if(sdisabilities & BLIND) // Disabled-blind, doesn't get better on its own
 				blinded =    1
@@ -987,7 +987,7 @@ var/global/list/brutefireloss_overlays = list("1" = image("icon" = 'icons/mob/sc
 			else if(istype(glasses, /obj/item/clothing/glasses/sunglasses/blindfold))	//resting your eyes with a blindfold heals blurry eyes faster
 				eye_blurry = max(eye_blurry-3, 0)
 				blinded =    1
-			
+
 			//blurry sight
 			if(vision.is_bruised())   // Vision organs impaired? Permablurry.
 				eye_blurry = 1
@@ -1220,13 +1220,17 @@ var/global/list/brutefireloss_overlays = list("1" = image("icon" = 'icons/mob/sc
 						if(ANTAGHUD)
 							process_antag_hud(src)
 
-
-
-
 		else if(!seer)
 			see_in_dark = species.darksight
 			see_invisible = SEE_INVISIBLE_LIVING
-			
+
+		if(vision_type)
+			see_in_dark = max(see_in_dark, vision_type.see_in_dark, species.darksight)
+			see_invisible = vision_type.see_invisible
+			if(vision_type.light_sensetive)
+				weakeyes = 1
+			sight |= vision_type.sight_flags
+
 		if(see_override)	//Override all
 			see_invisible = see_override
 
diff --git a/code/modules/mob/mob_defines.dm b/code/modules/mob/mob_defines.dm
index cee943541d3..3837f3d2b48 100644
--- a/code/modules/mob/mob_defines.dm
+++ b/code/modules/mob/mob_defines.dm
@@ -203,6 +203,7 @@
 	var/area/lastarea = null
 
 	var/digitalcamo = 0 // Can they be tracked by the AI?
+	var/weakeyes //Are they vulnerable to flashes?
 
 	var/list/radar_blips = list() // list of screen objects, radar blips
 	var/radar_open = 0 	// nonzero is radar is open
@@ -234,4 +235,6 @@
 
 	var/last_movement = -100 // Last world.time the mob actually moved of its own accord.
 
-	var/resize = 1 //Badminnery resize
\ No newline at end of file
+	var/resize = 1 //Badminnery resize
+
+	var/datum/vision_override/vision_type = null //Vision override datum.
\ No newline at end of file
diff --git a/paradise.dme b/paradise.dme
index dba397639c5..f469f33be4f 100644
--- a/paradise.dme
+++ b/paradise.dme
@@ -186,6 +186,7 @@
 #include "code\datums\spell.dm"
 #include "code\datums\supplypacks.dm"
 #include "code\datums\uplink_item.dm"
+#include "code\datums\vision_override.dm"
 #include "code\datums\cache\air_alarm.dm"
 #include "code\datums\cache\apc.dm"
 #include "code\datums\cache\cache.dm"