It is very possible for you to make you whites part of the eyes become more whiter if you moisture the eyes. You could use the eye drops with anti-inflammation to make the eyes become moisture. You could eat more food with vitamin C which will make your eyes get moisture. You could also use the warm compress to make your eyes get bright. You should not smoke or drink which will make your eyes become yellow.
Overuse of eyes or wearing contact lenses in incorrect way can make your eyes looks tired and the white part of your eyes has no sparking any more. Abandon your bad habits of using eyes and have enough time sleep at night, eat vegetables and fruits that contains abundant Vitamins can help your eyes become brighter.