         mouthPath.stroke()
     }
     
-    // Draw - Eye
+    /**
+    Draw eyes.
+    
+    - parameter rect:      frame
+    - parameter isLeftEye: if is drawing left eye
+    */
     private func drawEyeWithRect(rect: CGRect, isLeftEye: Bool) {
         if !rateShowEyes {
             return

        }
    }
    
    @IBInspectable
    public var rateShowEyes: Bool = true {
        didSet {
            self.setNeedsDisplay()
        }
    }
    
    @IBInspectable
    public var rateEyeWidth: CGFloat = 0.2 {
        didSet {
            if rateEyeWidth > 0.3 {
                rateEyeWidth = 0.3

        }
    }
    
    /// Eye vertical position. From 0.6 to 0.8.
    @IBInspectable public var rateEyeVerticalPosition: CGFloat = 0.6 {
        didSet {
            if rateEyeVerticalPosition > 0.8 {
                rateEyeVerticalPosition = 0.8
