Steep Keratometric Axis Sequence
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(0046,0074)
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1
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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.
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>Radius of Curvature
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(0046,0075)
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1
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The radius of curvature of the principal meridians of the cornea, measured in mm.
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>Keratometric Power
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(0046,0076)
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2
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The refractive power of the cornea at the principal meridians, measured in diopters.
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>Keratometric Axis
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(0046,0077)
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2
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The meridian where the keratometric radius of curvature or power is measured, in degrees.
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Flat Keratometric Axis Sequence
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(0046,0080)
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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
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(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.
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Keratometry Measurement Type Code Sequence
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(0022,1096)
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2
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Descriptors relevant to keratometry data.
Zero or one Item shall be included in this Sequence.
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>Include Table 8.8-1 “Code Sequence Macro Attributes”
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DCID 4235 “Keratometry Descriptor”
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Keratometer Index
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(0022,1033)
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2
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The translation factor specific to each keratometer that derives a number for power from the measured radius of curvature of the cornea.
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