Table C.8.25.10-1 defines the Attributes used to represent the keratometric measurements by a keratometer of a patient's eyes. Usually both eyes are measured, but sometimes just one.
Table C.8.25.10-1. Keratometry Measurements Module Attributes
|
Attribute Name |
Tag |
Type |
Attribute Description |
|---|---|---|---|
|
Keratometry Right Eye Sequence |
(0046,0070) |
1C |
A sequence that specifies keratometric measurements of a patient's right eye, defining principal meridians wherein the steepest meridian is separated by 90 degrees from the flattest. Only a single item shall be included in this sequence. Required if the right eye is measured. Note
|
|
>Include Table C.8.25.10-2 “Keratometric Measurements Macro Attributes” |
|||
|
Keratometry Left Eye Sequence |
(0046,0071) |
1C |
A sequence that specifies keratometric measurements of a patient's left eye, defining principal meridians wherein the steepest meridian is separated by 90 degrees from the flattest. Only a single item shall be included in this sequence. Required if the left eye is measured. Note
|
|
>Include Table C.8.25.10-2 “Keratometric Measurements Macro Attributes” |
|||
Table C.8.25.10-2 describes the attributes for the Keratometric Measurements Macro.
Table C.8.25.10-2. Keratometric Measurements Macro Attributes
|
Attribute Name |
Tag |
Type |
Attribute Description |
|---|---|---|---|
|
Steep Keratometric Axis Sequence |
(0046,0074) |
1 |
A sequence that specifies the 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) |
1 |
The refractive power of the cornea at the principal meridians, measured in diopters. |
|
>Keratometric Axis |
(0046,0077) |
1 |
The meridian where the keratometric radius of curvature or power is measured, in degrees. |
|
Flat Keratometric Axis Sequence |
(0046,0080) |
1 |
A sequence that specifies the 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) |
1 |
The refractive power of the cornea at the principal meridians, measured in diopters. |
|
>Keratometric Axis |
(0046,0077) |
1 |
The meridian where the keratometric radius of curvature or power is measured, in degrees. |