TG: Readds the clusterbang.

Eye damage over 20 units now causes permanent vision impairment,
Eye damage over 30 units now causes permanent welder-vision.
Eye damage is treated by Imidazoline or eye surgery.  Full blindness still only
treatable by eye surgery.
Revision: r2951
Author: 	 VivianFoxfoot

code/modules/chemical/Chemistry-Reagents.dm

@@ -1531,6 +1531,7 @@ datum
 				M:eye_blurry = max(M:eye_blurry-5 , 0)
 				M:eye_blind = max(M:eye_blind-5 , 0)
 				M:disabilities &= ~1
+				M:eye_stat = max(M:eye_stat-5, 0)
 				if(volume > REAGENTS_OVERDOSE)
 					M:adjustToxLoss(1)
 //				if(data >= 100)

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

@@ -1282,7 +1282,7 @@
 					if (druggy)
 						client.screen += hud_used.druggy
 
-					if (istype(head, /obj/item/clothing/head/helmet/welding))
+					if ((istype(head, /obj/item/clothing/head/helmet/welding)) )
 						if(!head:up && tinted_weldhelh)
 							client.screen += hud_used.darkMask