How to make the eyes brighter in Photoshop

1. Make a duplicate layer under the layers tab.
2. Burn: move down to 10% under shadows and burn the dark part of the outside ring around the eye.
3. Dodge: the color part of the eye.
4. Select the eye and under filters hit "sharpen more" once
5. under image, go to adjustments, replace color, select the color of the eye that you want to enhance and increase the saturation.
6. Adjust opacity on the layer to your liking and flatten image.