Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
ANSI Standards
| Question | Answer |
|---|---|
| A prescription must be placed in ________ cylinder form in order to check tolerances. | minus |
| sphere power meridian (svl or multifocal) 0.00 to 6.50 D is ____ | +/- 0.13 |
| sphere power meridian (svl or multifocal) > 6.50 D is_____ | +/- 2% |
| cylinder power meridian (svl or multifocal) 0.00 to 8.00 D is _____ | +/- 0.13 |
| cylinder power meridian (svl or multifocal) >2.00 to 4.50 D is _____ | +/- 0.15 |
| cylinder power meridian (svl or multifocal) > 4.50 is _____ | +/- 4% |
| sphere power meridian (pal) 0.00 to 8.00 D is _____ | +/- 0.16 |
| sphere power meridian (pal) >8.00D is _____ | +/- 2% |
| cylinder power meridian (pal) 0.00 to 2.00 D is ____ | +/- 0.16 |
| cylinder power meridian (pal) >2.00 to 3.50 D is _____ | +/- 0.18 |
| cylinder power meridian (pal) >3.50 D is | +/- 5% |
| ADD power 0.00 to 4.00 D is _______ | +/- 0.12 |
| ADD power >4.00 D is _____ | +/- 0.18 |
| Axis tolerance 0.00 to 0.25 D is _____ | +/- 14 degrees |
| Axis tolerance >0.25 to 0.50 D is ______ | +/- 7 degrees |
| Axis tolerance >0.50 to 0.75 D is ______ | +/- 5 degrees |
| Axis tolerance >0.75 to 1.50 D is _____ | +/- 3 degrees |
| Axis tolerance >1.50 D is ________ | +/- 2 degrees |
| Prism (svl and multifocal) vertical 0.00 to 3.37 D is | +/- 0.33 |
| Prism (svl and multifocal) vertical >3.37 D is ____ | 1 mm difference in height of MRP (1 mm from where it's supposed to be) |
| Prism(svl and multi) horizontal 0.00 to 2.75 D is _____ | +/- 0.67 |
| Prism (svl and multi) horizontal >2.75 D is ____ | 2.5 mm from specified PD (total PD gets 2.5 mm tolerance) |
| veritical prism (PAL) 0.00 to 3.375 D is ____ | +/- 0.33 |
| vertical prism (PAL) >3.375 D is _______ | 1 mm difference in height of MRP (1mm difference between the 2 lenses) |
| horizontal prism (PAL) 0.00 to 3.375 D is ______ | +/- 0.67 |
| horizontal prism (PAL) >3.375 D is _____ | 1 mm from specified monocular PD (each eye gets 1 mm tolerance) |
| Prism (Uncut Lenses) | 0.33 or 1 mm from specified location |
| segment or fitting cross location veritical location | +/- mm from specified location |
| segment or fitting cross location vertical difference | +/- 1 mm from each other |
| segment or fitting cross location horizontal location | +/- 2.5 mm from specified near PD (segments), and +/- 1 mm from monocular pd (pal) |
| segment or progressive tilt | +/- 2 degrees |
| BC (when specified) | +/- 0.75 |
| Center thickness (when specified) | +/- 0.3 |
| segment size | +/- 0.5 mm |
| warpage | +/- 1.00 (of cylinder induced on front) |
| impact resistance | capable of withstanding the impact of a 5/8 inch steel ball dropped from 50 inches) |
Created by:
celticdragon86
Popular Medical sets