I missed an earlier port.

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

@@ -144,5 +144,5 @@ Bonus
 /datum/symptom/asphyxiation/proc/Asphyxiate_death(mob/living/M, datum/disease/advance/A)
 	var/get_damage = rand(25,35) * power
 	M.adjustOxyLoss(get_damage)
-	M.adjustBrainLoss(get_damage/2)
+	M.adjustOrganLoss(ORGAN_SLOT_BRAIN, get_damage/2)
 	return 1

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

@@ -55,7 +55,7 @@ Bonus
 			to_chat(M, "<span class='userdanger'>You can't think straight!</span>")
 			M.confused = min(100 * power, M.confused + 8)
 			if(brain_damage)
-				M.adjustBrainLoss(3 * power, 80)
+				M.adjustOrganLoss(ORGAN_SLOT_BRAIN, 3 * power, 80)
 				M.updatehealth()
 
 	return

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

@@ -51,7 +51,7 @@
 		M.hallucination = max(0, M.hallucination - 10)
 
 	if(A.stage >= 5)
-		M.adjustBrainLoss(-3)
+		M.adjustOrganLoss(ORGAN_SLOT_BRAIN, -3)
 		if(trauma_heal_mild && iscarbon(M))
 			var/mob/living/carbon/C = M
 			if(prob(10))

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

@@ -45,7 +45,7 @@ Bonus
 		return
 	var/mob/living/carbon/M = A.affected_mob
 	var/obj/item/organ/eyes/eyes = M.getorganslot(ORGAN_SLOT_EYES)
-	if(istype(eyes))
+	if(eyes)
 		switch(A.stage)
 			if(1, 2)
 				if(prob(base_message_chance) && !suppress_warning)