retouch eyes with Gimp

Select the white sclera of each eye with Gimp's selection tool lasso. Make the selection soft by using the Select » Feather dialog. I used a value of 5 px to make the selection in my image soft.

Reduce the saturation of previously selected white sclera with Tools » Colors » Hue + Saturation to make the eyes more bright, brighter and clearer. I used the following values to improve the eyes in my image: Hue: 0 ; Lightness: 60 ; Saturation: -70.

enhance lightness in iris of eyes

Select the iris of eyes with Gimp's selection tool lasso. Make the selection soft by using the Select » Feather dialog. I used a value of 5 px to make the selection in my image soft.

Enhance the brightness and saturation of the iris by using the Tools » Colors » Hue + Saturation dialog. I used the following values to improve the brightness in my image: Hue: 0 ; Lightness: 10 ; Saturation: 35.

xoxo
aL

Tutorial taken from Click here.