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| OPI-package | Open Perimetry Interface |
| cdTodb | Convert cd/m^2 to Humphrey dB |
| chooseOpi | Choose an implementation of the OPI. |
| dbTocd | Convert Humphrey dB to cd/m^2 |
| FT | Full Threshold |
| OPI | Open Perimetry Interface |
| opiClose | Close using OPI. |
| opiInitialise | Initialize OPI. |
| opiInitialize | Initialize OPI. |
| opiKineticStimulus | Stimulus parameter list. |
| opiPresent | Use OPI to present stimulus. |
| opiQueryDevice | Query device using OPI. |
| opiSetBackground | Set background using OPI. |
| opiStaticStimulus | Stimulus parameter list. |
| opiTemporalStimulus | Stimulus parameter list. |
| QUEST | ZEST |
| ZEST | ZEST |
| ZEST.final | ZEST |
| ZEST.start | ZEST |
| ZEST.step | ZEST |
| ZEST.stop | ZEST |