This is my left eye. You can see that I wear spectacles. I have to wear reading glasses so that I can see near objects; I also have to wear spectacles to correct astigmatism when I am riding my motorcycle. Astigmatism makes me see two pedestrians crossing the road when there is actually only one.
In the photo you should be able to see some tiny capillaries running over the surface of the white of my eye. Use the animation below to find out how the eye is made and what its various parts do.
Hover and click on the image to discover more about the eye. Move your mouse over the image: the label in the top right of the animation refers to the area on the diagram that turn red! If you click on “How images are formed”, you will see a ray diagram showing an inverted image of a candle.