C.8.25.16.2 Intraocular Lens Calculations Macro
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##### C.8.25.16.2 Intraocular Lens Calculations Macro

Table C.8.25.16-2 describes the attributes for the Intraocular Lens Calculations Macro.

Table C.8.25.16-2. Intraocular Lens Calculations Macro Attributes

Attribute Name | Tag | Type | Attribute Description
--- | --- | --- | ---
Target Refraction | (0022,1037) | 1 | The desired postoperative refractive error, in diopters.
Refractive Procedure Occurred | (0022,1039) | 2 | Whether or not a patient has had refractive surgery. Enumerated Values: YES NO
Refractive Surgery Type Code Sequence | (0022,1040) | 2C | Type of refractive surgery a patient has had. Zero or more Items shall be included in this sequence. Required if the value of Refractive Procedure Occurred (0022,1039) is YES.
>Include Table 8.8-1 “Code Sequence Macro Attributes” | Defined CID 4234 “Refractive Surgery Types”
Refractive Error Before Refractive Surgery Code Sequence | (0022,1103) | 2C | The patient's refractive error before any of the refractive surgeries listed in Refractive Surgery Type Code Sequence (0022,1040) were performed. Zero or one Item shall be included in this sequence. Required if the value of Refractive Procedure Occurred (0022,1039) is YES.
>Include Table 8.8-1 “Code Sequence Macro Attributes” | Defined CID 4238 “Refractive Error Types”
Corneal Size | (0046,0046) | 3 | The horizontal diameter measurement of the cornea, in mm.
Lens Thickness Sequence | (0022,1127) | 3 | Lens thickness value and source. Only a single Item is permitted in this sequence.
>Lens Thickness | (0022,1130) | 1 | The value for axial length of the lens in a patient's eye, in mm.
>Source of Lens Thickness Data Code Sequence | (0022,1132) | 1 | Source of the value of Lens Thickness (0022,1130). Only a single Item shall be included in this sequence.
>>Include Table 8.8-1 “Code Sequence Macro Attributes” | Defined CID 4240 “Ophthalmic Measurement Or Calculation Data Source”
>Referenced SOP Sequence | (0008,1199) | 1C | SOP Instance that is relevant to the interpretation of this SOP Instance. Only a single Item shall be included in this sequence. See Section C.8.25.16.1.1 for further explanation. Required if Source of Lens Thickness Data Code Sequence (0022,1132) contains an item with the value (111782, DCM, "Axial Measurements SOP Instance").
>>Include Table 10-11 “SOP Instance Reference Macro Attributes” |
Anterior Chamber Depth Sequence | (0022,1128) | 3 | Anterior chamber depth value and source. Only a single Item is permitted in this sequence.
>Anterior Chamber Depth | (0022,1131) | 1 | The value for axial length of the anterior chamber, in mm.
>Source of Anterior Chamber Depth Data Code Sequence | (0022,1133) | 1 | Source of the value of Anterior Chamber Depth (0022,1131). Only a single Item shall be included in this sequence.
>>Include Table 8.8-1 “Code Sequence Macro Attributes” | Defined CID 4240 “Ophthalmic Measurement Or Calculation Data Source”
>Referenced SOP Sequence | (0008,1199) | 1C | SOP Instance that is relevant to the interpretation of this SOP Instance. Only a single Item shall be included in this sequence. See Section C.8.25.16.1.1 for further explanation. Required if Source of Anterior Chamber Depth Data Code Sequence (0022,1133) contains an item with the value (111782, DCM, "Axial Measurements SOP Instance").
>>Include Table 10-11 “SOP Instance Reference Macro Attributes” |
Refractive State Sequence | (0022,001B) | 2 | Refractive state of the imaged eye at the time of acquisition. Zero or one Item shall be included in this sequence.
>Spherical Lens Power | (0022,0007) | 1 | Sphere value in diopters.
>Cylinder Lens Power | (0022,0008) | 1 | Cylinder value in diopters.
>Cylinder Axis | (0022,0009) | 1 | Axis value in degrees.
>Source of Refractive Measurements Sequence | (0022,1134) | 1 | Refractive measurements source. Only a single Item shall be included in this sequence.
>>Source of Refractive Measurements Code Sequence | (0022,1135) | 1 | Source of values in Refractive State Sequence (0022,101B). Only a single Item shall be included in this sequence.
>>>Include Table 8.8-1 “Code Sequence Macro Attributes” | Defined CID 4240 “Ophthalmic Measurement Or Calculation Data Source”
>>Referenced SOP Sequence | (0008,1199) | 1C | SOP Instances that are relevant to the interpretation of this SOP Instance. One or more items shall be included in this sequence. See Section C.8.25.16.1.1 for further explanation. Required if Source of Refractive Measurements Code Sequence (0022,1135) contains an item with the value (111783, DCM, "Refractive Measurements SOP Instance").
>>>Include Table 10-11 “SOP Instance Reference Macro Attributes” |
Include Table C.8.25.16-3 “Keratometry Macro Attributes” |
IOL Formula Code Sequence | (0022,1028) | 1 | Formula used to calculate IOL power. Only a single Item shall be included in this sequence.
>Include Table 8.8-1 “Code Sequence Macro Attributes” | Defined CID 4236 “IOL Calculation Formula”
IOL Formula Detail | (0022,1029) | 3 | A free form text description of the of the IOL Formula Code Sequence (0022,1028) (e.g., a reference to the mathematical equation).
Include Table C.8.25.16-4 “IOL Ophthalmic Axial Length Macro Attributes” |
Include Table C.8.25.16-5 “Calculated IOL Macro Attributes” |

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