DICOM PS3.3 2024e - Information Object Definitions |
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Table C.8.25.8-1 specifies the Attributes of the Lensometry Measurements Module, which are used to capture the refractive measurements by a lensometer for spectacles. This is typically for a pair of lenses, but sometimes for just one. Sometimes a single lens is measured with an unknown laterality.
Table C.8.25.8-1. Lensometry Measurements Module Attributes
A free text description of the lens and lens general comments. |
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A Sequence that specifies measurements of a patient's right lens. |
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>Include Table C.8.25.8-2 “Lensometry Measurements Macro Attributes” |
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A Sequence that specifies measurements of a patient's left lens. |
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>Include Table C.8.25.8-2 “Lensometry Measurements Macro Attributes” |
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A Sequence that specifies measurements of one lens of unknown laterality. Only a single Item shall be included in this Sequence. Shall not be included if Attribute Right Lens Sequence (0046,0014) or Left Lens Sequence (0046,0015) is present. Required if a single lens of unknown laterality is measured. |
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>Include Table C.8.25.8-2 “Lensometry Measurements Macro Attributes” |
Table C.8.25.8-2 specifies the Attributes of the Lensometry Measurements Macro.
Table C.8.25.8-2. Lensometry Measurements Macro Attributes
Refractive power of the lens that is the same in all meridians, measured at distance (optical infinity), in diopters. |
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Include Table C.8.25.6.1-1 “Cylinder Sequence Macro Attributes” |
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A Sequence that specifies refractive measurements of the lens to correct for inability to focus at near while wearing the distance prescription. |
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Additional power relative to the distance correction, expressed in diopters, that allows best corrected visual acuity at the defined viewing distance. |
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The distance, in cm, for testing visual acuity corresponding to the value of Add Power (0046,0104) in this Sequence. |
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A Sequence that specifies refractive measurements of the lens to correct for inability to focus at intermediate distance while wearing the distance prescription. |
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Additional power relative to the distance correction, expressed in diopters, that allows best corrected visual acuity at the defined viewing distance. |
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The distance, in cm, for testing visual acuity corresponding to the value of Add Power (0046,0104) in this Sequence Item. |
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Include Table C.8.25.6.2-1 “Prism Sequence Macro Attributes” |
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The type of segment of a lens containing the "add" power, as described above |
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The fraction of light that passes through the measured lens optical media, in percent. |
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In a progressive lens, the width in mm of that portion of the lens where there is gradual or progressive increase in "add" power. |
DICOM PS3.3 2024e - Information Object Definitions |
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