Use unblind only for totally blind slaves; a slave with sight in one eye will...

Use unblind only for totally blind slaves; a slave with sight in one eye will still use newEye.  Prevents double dev/trust gain.

src/npc/surgery/organs.js

@@ -201,10 +201,18 @@ App.Medicine.OrganFarm.init = function() {
 	new App.Medicine.OrganFarm.Organ({
 		type: "leftEye", name: "Left Eye", cost: 5000, time: 10,
 		actions: [
+			new App.Medicine.OrganFarm.OrganImplantAction({
+				name: "Implant", healthImpact: 10, surgeryType: "newEyes",
+				canImplant: s => (getLeftEyeVision(s) === 0 && getBestVision(s) !== 0 && getLeftEyeType(s) !== 2),
+				implantError: s => getLeftEyeVision(s) !== 0 ? "Slave has a working left eye." : "",
+				implant: s => {
+					eyeSurgery(s, "left", "normal");
+				}
+			}),
 			new App.Medicine.OrganFarm.OrganImplantAction({
 				name: "Implant", healthImpact: 10, surgeryType: "unblind",
-				canImplant: s => (getLeftEyeVision(s) === 0 && getLeftEyeType(s) !== 2),
-				implantError: () => "Slave has a working left eye.",
+				canImplant: s => (getBestVision(s) === 0 && getLeftEyeType(s) !== 2),
+				implantError: () => "",
 				implant: s => {
 					eyeSurgery(s, "left", "normal");
 				}
@@ -223,10 +231,18 @@ App.Medicine.OrganFarm.init = function() {
 	new App.Medicine.OrganFarm.Organ({
 		type: "rightEye", name: "Right Eye", cost: 5000, time: 10,
 		actions: [
+			new App.Medicine.OrganFarm.OrganImplantAction({
+				name: "Implant", healthImpact: 10, surgeryType: "newEyes",
+				canImplant: s => (getRightEyeVision(s) === 0 && getBestVision(s) !== 0 && getRightEyeType(s) !== 2),
+				implantError: s => getRightEyeVision(s) !== 0 ? "Slave has a working right eye." : "",
+				implant: s => {
+					eyeSurgery(s, "right", "normal");
+				}
+			}),
 			new App.Medicine.OrganFarm.OrganImplantAction({
 				name: "Implant", healthImpact: 10, surgeryType: "unblind",
-				canImplant: s => (getRightEyeVision(s) === 0 && getRightEyeType(s) !== 2),
-				implantError: () => "Slave has a working right eye.",
+				canImplant: s => (getBestVision(s) === 0 && getRightEyeType(s) !== 2),
+				implantError: () => "",
 				implant: s => {
 					eyeSurgery(s, "right", "normal");
 				}