Here is a tip on lightening selected parts of a photograph.
Tip - Lighten or brighten selected parts of a photograph (eg eyes)
There are many different methods to do this. One method is to use the High key option in Nik software which comes free from Google https://www.google.com/nikcollection/.
From Photoshop, load up the Nik Add in. Select the High Key option from the Color Efex Pro module of Nik. Apply the high key effect to the % extent you wish within Nik, save and return to Photoshop. This will create a new layer within Photoshop. Add a black-filled in layer mask in Photoshop (press the Alt key when choosing Add Layer Mask). Now finally, use the Brush Tool within the eyes in the image to selectively apply the high key effect. You will probably want to reduce the opacity of the layer to 50% or less - but use your judgement.
Image of the day - Off Course