diff --git a/code/modules/clothing/glasses/engine_goggles.dm b/code/modules/clothing/glasses/engine_goggles.dm
index 2f70c3bfdf..61cca9b24a 100644
--- a/code/modules/clothing/glasses/engine_goggles.dm
+++ b/code/modules/clothing/glasses/engine_goggles.dm
@@ -7,18 +7,18 @@
 	actions_types = list(/datum/action/item_action/toggle_mode)
 	origin_tech = "materials=3;magnets=3;engineering=3;plasmatech=3"
 
-	mode = FALSE	//FALSE - regular mesons mode	TRUE - t-ray mode
+	mesons_on = TRUE //if set to FALSE, these goggles work as t-ray scanners.
 	var/range = 1
 
 /obj/item/clothing/glasses/meson/engine/toggle_mode(mob/user, voluntary)
 	var/turf/T = get_turf(src)
-	if(T && T.z == ZLEVEL_MINING && mode)
+	if(T && T.z == ZLEVEL_MINING && !mesons_on)
 		if(picked_excuse)
 			to_chat(user, "<span class='warning'>Due to [picked_excuse], the [name] cannot currently be swapped to \[Meson] mode.</span>")
 		return
-	mode = !mode
+	mesons_on = !mesons_on
 
-	if(mode)
+	if(!mesons_on)
 		vision_flags = 0
 		darkness_view = 2
 		invis_view = SEE_INVISIBLE_LIVING
@@ -50,7 +50,7 @@
 	toggle_mode(user, TRUE)
 
 /obj/item/clothing/glasses/meson/engine/process()
-	if(!mode)
+	if(mesons_on)
 		var/turf/T = get_turf(src)
 		if(T && T.z == ZLEVEL_MINING)
 			toggle_mode(loc)
@@ -83,15 +83,8 @@
 		if(M.client)
 			flick_overlay(I, list(M.client), 8)
 
-/obj/item/clothing/glasses/meson/engine/proc/t_ray_on()
-	if(!ishuman(loc))
-		return 0
-
-	var/mob/living/carbon/human/user = loc
-	return mode & (user.glasses == src)
-
 /obj/item/clothing/glasses/meson/engine/update_icon()
-	icon_state = mode ? "trayson-tray" : "trayson-meson"
+	icon_state = mesons_on ? "trayson-meson" : "trayson-tray"
 	if(istype(loc,/mob/living/carbon/human/))
 		var/mob/living/carbon/human/user = loc
 		if(user.glasses == src)
@@ -103,7 +96,7 @@
 	icon_state = "trayson-tray_off"
 	origin_tech = "materials=3;magnets=2;engineering=2"
 
-	mode = TRUE
+	mesons_on = FALSE
 	var/on = FALSE
 	vision_flags = 0
 	darkness_view = 2
@@ -135,6 +128,3 @@
 	for(var/X in actions)
 		var/datum/action/A = X
 		A.UpdateButtonIcon()
-
-/obj/item/clothing/glasses/meson/engine/tray/t_ray_on()
-	return on && ..()
diff --git a/code/modules/clothing/glasses/glasses.dm b/code/modules/clothing/glasses/glasses.dm
index 1cc0cc6163..063f3894c9 100644
--- a/code/modules/clothing/glasses/glasses.dm
+++ b/code/modules/clothing/glasses/glasses.dm
@@ -42,7 +42,7 @@
 	var/static/list/meson_mining_failure_excuses = list("seismic activity", "excessive lava", "ambient radiation", "electromagnetic storms", "bluespace disruption", \
 	"gravity", "dust", "dense rock", "ash", "badly understood science", "radiant heat")
 	var/picked_excuse
-	var/mode = FALSE //if FALSE, is in normal meson mode.
+	var/mesons_on = TRUE
 
 /obj/item/clothing/glasses/meson/Initialize()
 	. = ..()
@@ -56,34 +56,28 @@
 /obj/item/clothing/glasses/meson/examine(mob/user)
 	..()
 	var/turf/T = get_turf(src)
-	if(T && T.z == ZLEVEL_MINING && mode && picked_excuse)
+	if(T && T.z == ZLEVEL_MINING && !mesons_on && picked_excuse)
 		to_chat(user, "<span class='warning'>Due to [picked_excuse], these Meson Scanners will not be able to display terrain layouts in this area.</span>")
 
 /obj/item/clothing/glasses/meson/proc/toggle_mode(mob/user)
-	if(vision_flags & SEE_TURFS)
-		mode = TRUE
-		vision_flags &= ~SEE_TURFS
-		if(ishuman(user))
-			var/mob/living/carbon/human/H = user
-			if(picked_excuse)
-				to_chat(H, "<span class='warning'>Due to [picked_excuse], your Meson Scanners will not be able to display terrain layouts in this area.</span>")
-			if(H.glasses == src)
-				H.update_sight()
-	else if(!(vision_flags & SEE_TURFS))
-		mode = FALSE
-		vision_flags |= SEE_TURFS
-		if(ishuman(user))
-			var/mob/living/carbon/human/H = user
-			to_chat(H, "<span class='notice'>Your Meson Scanners have reactivated.</span>")
-			if(H.glasses == src)
-				H.update_sight()
+	vision_flags ^= SEE_TURFS
+	mesons_on = (vision_flags & SEE_TURFS)? TRUE : FALSE
+
+	if(iscarbon(user)) //only carbons can wear glasses
+		var/mob/living/carbon/C = user
+		if(!mesons_on)
+			to_chat(C, "<span class='notice'>Your Meson Scanners have reactivated.</span>")
+		else if(picked_excuse)
+			to_chat(C, "<span class='warning'>Due to [picked_excuse], your Meson Scanners will not be able to display terrain layouts in this area.</span>")
+		if(C.glasses == src)
+			C.update_sight()
 
 /obj/item/clothing/glasses/meson/process()
 	var/turf/T = get_turf(src)
 	if(T && T.z == ZLEVEL_MINING)
-		if(!mode)
+		if(mesons_on) //if we're on mining, turn mesons OFF
 			toggle_mode(loc)
-	else if(mode)
+	else if(!mesons_on) //otherwise, if we're not on mining, turn mesons back ON
 		toggle_mode(loc)
 
 /obj/item/clothing/glasses/meson/night