| LIGHT TRANSMISSION | UNTINTED |
| STYLE DESIGNATOR | ROUND-RECTANGULAR WITH ROUNDED CORNERS |
| MATERIAL AND LOCATION | GLASS SINGLE VISION |
| DIAMETER | 54.0 MILLIMETERS MINIMUM AND |
| 62.0 MILLIMETERS MAXIMUM |
| WIDTH | 52.0 MILLIMETERS MINIMUM AND |
| 60.0 MILLIMETERS MAXIMUM |
| HEIGHT | 52.0 MILLIMETERS MINIMUM AND |
| 60.0 MILLIMETERS MAXIMUM |
| THICKNESS | 3.0 MILLIMETERS NOMINAL |
| CROSS-SECTIONAL SHAPE STYLE | SPHERE |
| BASE CURVE DIOPTER | 3.50 MINUS NOMINAL |
| CROSS CURVE DIOPTER | 3.50 MINUS NOMINAL |
| NONDEFINITIVE SPEC/STD DATA | 3 TYPE AND |
| 1 STYLE AND |
| E CLASS |
| SUPPLEMENTARY FEATURES | UNCUT |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | LENS OPHTHALMIC SIMPLE MINUS 3.50 SPHERE |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MILL16991 |