| LIGHT TRANSMISSION | UNTINTED |
| STYLE DESIGNATOR | ROUND-RECTANGULAR WITH ROUNDED CORNERS |
| MATERIAL AND LOCATION | GLASS SINGLE VISION |
| DIAMETER | 57.0 MILLIMETERS MINIMUM AND |
| 65.0 MILLIMETERS MAXIMUM |
| WIDTH | 54.0 MILLIMETERS MINIMUM AND |
| 60.0 MILLIMETERS MAXIMUM |
| HEIGHT | 54.0 MILLIMETERS MINIMUM AND |
| 60.0 MILLIMETERS MAXIMUM |
| CROSS-SECTIONAL SHAPE STYLE | SPHEROCYLINDER COMPOUND |
| SPHERE CURVE OUTSIDE DIOPTER | 2.50 MINUS MAXIMUM |
| CYLINDER CURVE OUTSIDE DIOPTER | 4.00 PLUS MAXIMUM |
| NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND |
| 4 STYLE AND |
| F CLASS |
| DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY DIMENSIONS |
| SUPPLEMENTARY FEATURES | UNCUT |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | LENS OPHTHALMIC COMPOUND MINUS 2.50 WITH PLUS 4.00 |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MILL16991 |