Removed some superfluous assets and updated code for better readability.

Assets/Materials/EyeLaserMaterial.mat

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Assets/Prefabs/Eye Laser Prefab.prefab

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Assets/Scripts/EyePoseVisualizer.cs

         m_Face = GetComponent<ARFace>();
     }
 
-    void GetOrCreateEyeGameObjects()
+    void CreateEyeGameObjectsIfNecessary()
-        if (m_Face.leftEyeTransform != null && m_Face.rightEyeTransform != null &&
-            m_LeftEyeGameObject == null && m_RightEyeGameObject == null)
+        if (m_Face.leftEyeTransform != null && m_LeftEyeGameObject == null )
+            m_LeftEyeGameObject.SetActive(false);
+        }
+        if (m_Face.rightEyeTransform != null && m_RightEyeGameObject == null)
+        {
-            m_LeftEyeGameObject.SetActive(false);
             m_RightEyeGameObject.SetActive(false);
         }
     }
 
     void OnUpdated(ARFaceUpdatedEventArgs eventArgs)
     {
-        GetOrCreateEyeGameObjects();
+        CreateEyeGameObjectsIfNecessary();
         UpdateVisibility();
     }
 }

Assets/Scripts/FixationPoint2DVisualizer.cs

         m_Face = GetComponent<ARFace>();
     }
 
-    void GetOrCreateEyeGameObjects()
+    void CreateEyeGameObjectsIfNecessary()
     {
         var canvas = FindObjectOfType<Canvas>();
         if (m_Face.fixationPointTransform != null && canvas != null && m_FixationReticleGameObject == null)
 
     void OnUpdated(ARFaceUpdatedEventArgs eventArgs)
     {
-        GetOrCreateEyeGameObjects();
+        CreateEyeGameObjectsIfNecessary();
         UpdateVisibility();
         UpdateScreenReticle();
     }

Assets/Scripts/FixationPoint3DVisualizer.cs

 public class FixationPoint3DVisualizer : MonoBehaviour
 {
     [SerializeField]
-    GameObject m_FixationPointPrefab;
+    GameObject m_FixationRayPrefab;
-    public GameObject fixationPointPrefab
+    public GameObject fixationRayPrefab
-        get => m_FixationPointPrefab;
-        set => m_FixationPointPrefab = value;
+        get => m_FixationRayPrefab;
+        set => m_FixationRayPrefab = value;
-    GameObject m_FixationPointGameObject;
+    GameObject m_FixationRayGameObject;
 
     ARFace m_Face;
     XRFaceSubsystem m_FaceSubsystem;
         m_Face = GetComponent<ARFace>();
     }
 
-    void GetOrCreateEyeGameObjects()
+    void CreateEyeGameObjectsIfNecessary()
-        if (m_FixationPointGameObject == null && m_Face.fixationPointTransform != null)
+        if (m_FixationRayGameObject == null && m_Face.fixationPointTransform != null)
-            m_FixationPointGameObject = Instantiate(m_FixationPointPrefab, m_Face.transform);
-            m_FixationPointGameObject.SetActive(false);
+            m_FixationRayGameObject = Instantiate(m_FixationRayPrefab, m_Face.transform);
+            m_FixationRayGameObject.SetActive(false);
-        if (m_FixationPointGameObject != null)
-            m_FixationPointGameObject.SetActive(visible);
+        if (m_FixationRayGameObject != null)
+            m_FixationRayGameObject.SetActive(visible);
     }
 
     void UpdateVisibility()
 
     void OnUpdated(ARFaceUpdatedEventArgs eventArgs)
     {
-        GetOrCreateEyeGameObjects();
+        CreateEyeGameObjectsIfNecessary();
         UpdateVisibility();
         UpdateFixationPoint();
     }
-        if (m_FixationPointGameObject != null)
+        if (m_FixationRayGameObject != null)
-            m_FixationPointGameObject.transform.LookAt(m_Face.fixationPointTransform.position);
+            m_FixationRayGameObject.transform.LookAt(m_Face.fixationPointTransform.position);
         }
     }
 

Assets/Materials/ZMaterial 1.mat

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Assets/Materials/EyeLaserMaterial 1.mat

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