Photogray Extra and Transitions Comparison
| PHOTOGRAY EXTRA | TRANSITIONS | |
| MATERIAL | LEADED GLASS | PLASTIC |
| SCRATCHING | MINIMAL | FRONT SURFACE SCRATCH COATING GUARANTEED |
| LIFE OF CHANGABILITY | YEARS | ABOUT AS LONG AS THE LIFE OF PRESCRIPTION |
| WEIGHT | HEAVIEST MATERIAL | LIGHT |
| COST | MINIMAL | LESS THAN THE COST OF A SEPARATE PAIR OF SUNGLASSES |
| DEGREE OF DARKNESS | 75% | 60% |
| CARE | WET LENS AND WIPE DRY WITH A SOFT CLOTH |
WET LENS AND WIPE DRY WITH A SOFT CLOTH (NEVER CLEAN DRY!) |
