Table C.8.25.16-3 describes the attributes for the Keratometry Macro.

Table C.8.25.16-3 KERATOMETRY MACRO

Attribute Name | Tag | Type | Attribute Description |

Steep Keratometric Axis Sequence | (0046,0074) | 1 | Steepest meridian as defined by the greatest power of curvature and shortest radius of curvature. Only a single Item shall be included in this sequence. |

>Radius of Curvature | (0046,0075) | 1 | The radius of curvature of the principal meridians of the cornea, measured in mm. |

>Keratometric Power | (0046,0076) | 2 | The refractive power of the cornea at the principal meridians, measured in diopters. |

>Keratometric Axis | (0046,0077) | 2 | The meridian where the keratometric radius of curvature or power is measured, in degrees. |

Flat Keratometric Axis Sequence | (0046,0080) | 1 | Flattest meridian as defined by the least power of curvature and longest radius of curvature. Only a single Item shall be included in this sequence. |

>Radius of Curvature | (0046,0075) | 1 | The radius of curvature of the principal meridians of the cornea, measured in mm. |

>Keratometric Power | (0046,0076) | 2 | The refractive power of the cornea at the principal meridians, measured in diopters. |

>Keratometric Axis | (0046,0077) | 2 | The meridian where the keratometric radius of curvature or power is measured, in degrees. |

Keratometry Measurement Type Code Sequence | (0022,1096) | 2 | Descriptors relevant to keratometry data. Zero or one Item shall be included in this sequence. |

>Include 'Code Sequence Macro' Table 8.8-1. Defined Context ID is 4235 | |||

Keratometer Index | (0022,1033) | 2 | The translation factor specific to each keratometer that derives a number for power from the measured radius of curvature of the cornea. |