I just got a new prescription for glasses and bought progressive lense instead of the lined bifocals that I'd been wearing. It's been a week now and I notice that when watching sports of tv (NBA playoffs) the picture doesn't seem as clear, without constantly moving my head. Anyone here switched from bifocals to progressive notice any problems? Did you stay or go back to bifocals. Lenscrafters allows 30 days to switch back with no charge.