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!) |
