There can be a number of causes of puffiness under the eyes. Allergies or sinus problems and contribute under eye swelling as can lac of sleep and rubbing your eyes. Interestingly, we blink less often when using a computer (this is a proven fact) so that could contribute to irritation of the eyes as well. Finally, and perhaps most importantly, under eye puffiness can be a trait that runs in a family (look at your parents' eyes). I would not recommend a surgical solution for someone your age but rather consider some of the medical conditions.