Hello,
I've experienced dryness/tiredness on my eyes, in past six month. It's most critical during morning, in the evening it's barely there. Also, during any physical activity, dryness is gone. I've been using contact lenses for about 2 years now, everyday, 12+ hours a day, but since this feeling I'm taking them off every time I can. Can you tell me what's the cause of this, is it something serious?