<Window x:Class="BlinkingEyeAnimation.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Blinking Eye Animation" Width="300" Height="300">

    <Window.Resources>
        <!-- Eye Blink Animation -->
        <Storyboard x:Key="BlinkAnimation" AutoReverse="True" RepeatBehavior="Forever">
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)">
                <EasingDoubleKeyFrame KeyTime="0:0:0" Value="1"/>
                <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="0"/>
                <EasingDoubleKeyFrame KeyTime="0:0:1" Value="1"/>
            </DoubleAnimationUsingKeyFrames>
        </Storyboard>
    </Window.Resources>

    <Grid>
        <!-- Eye -->
        <Ellipse Width="100" Height="100" Fill="White" Stroke="Black" StrokeThickness="2">
            <!-- Apply Blink Animation to the Eye -->
            <Ellipse.Triggers>
                <EventTrigger RoutedEvent="Ellipse.Loaded">
                    <BeginStoryboard Storyboard="{StaticResource BlinkAnimation}"/>
                </EventTrigger>
            </Ellipse.Triggers>
        </Ellipse>
    </Grid>
</Window>