| STYLE DESIGNATOR | ROUND WITH STRAIGHT TOP BIFOCAL SEGMENT |
| DIAMETER | 65.0 MILLIMETERS MINIMUM |
| THICKNESS | 4.0 MILLIMETERS NOMINAL |
| READING SEGMENT DIAMETER | 25.0 MILLIMETERS NOMINAL |
| READING SEGMENT HEIGHT | 17.5 MILLIMETERS NOMINAL |
| MATERIAL AND LOCATION | GLASS, SODA-LIME SINGLE VISION AND |
| GLASS, BARIUM BIFOCAL |
| LIGHT TRANSMISSION | TINTED |
| TINTED AREA LIGHT TRANSMITTANCE IN PERCENT | 31.0 |
| CROSS-SECTIONAL SHAPE STYLE | SPHERE |
| BASE CURVE DIOPTER | 8.25 PLUS NOMINAL |
| ADDITIONAL POWER RATING IN DIOPTERS | 1.500 BIFOCAL |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND |
| A CLASS |
| DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY THICKNESS |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | LENS BLANK OPHTHALMIC SEMIFINISHED BIFOCAL PLUS 8.25 PLUS 1.50 |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MILL36460 |