If the text and graphics using your computer screen aren't as clear when he once were, it might be a sign that eyesight has weakened slightly.
It almost gives an appearance of distinct blushing. These can be researched online to check if they could be safely administered. http://innovation.Openrouting.net/__media__/js/netsoltrademark.php?d=Www.Opticaljournal.com%2Fstudy-links-depression-anxiety-to-dry-eye-syndrome%2F