DICOM PS3.3 2017a - Information Object Definitions

C.8.25.11 Subjective Refraction Measurements Module
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#### C.8.25.11 Subjective Refraction Measurements Module

Table C.8.25.11-1 defines the Attributes used to represent the subjective refractive measurements of a patient's eyes. Usually both eyes are measured, but sometimes just one.

Table C.8.25.11-1. Subjective Refraction Measurements Module Attributes

Attribute Name | Tag | Type | Attribute Description
--- | --- | --- | ---
Subjective Refraction Right Eye Sequence | (0046,0097) | 1C | A sequence that specifies the subjective refractive measurements of a patient's right eye. Only a single Item shall be included in this Sequence. Required if the right eye is measured. ### Note If Subjective Refraction Right Eye Sequence (0046,0097) is present, Measurement Laterality (0024,0113), if present, will have a value of R or B as appropriate.
>Include Table C.8.25.11-2 “Subjective Refraction Measurements Macro Attributes” |
Subjective Refraction Left Eye Sequence | (0046,0098) | 1C | A sequence that specifies the subjective refractive measurements of a patient's left eye. Only a single Item shall be included in this Sequence. Required if the left eye is measured. ### Note If Subjective Refraction Left Eye Sequence (0046,0098) is present, Measurement Laterality (0024,0113), if present, will have a value of L or B as appropriate.
>Include Table C.8.25.11-2 “Subjective Refraction Measurements Macro Attributes” |
Distance Pupillary Distance | (0046,0060) | 3 | Distance in mm between the pupils when the patient's object of regard is in the distance, as measured by a phoropter.
Near Pupillary Distance | (0046,0062) | 3 | Distance in mm between the pupils when the patient's object of regard is at near, as measured by a phoropter.
Intermediate Pupillary Distance | (0046,0063) | 3 | Distance in mm between the pupils when the patient's object of regard is at an intermediate distance, as measured by a phoropter.
Other Pupillary Distance | (0046,0064) | 3 | Distance in mm between the pupils when the patient's object of regard is at the distance specified in the attribute Add Other Sequence (0046,0102), as measured by a phoropter.

Table C.8.25.11-2 describes the attributes used for the Subjective Refraction Measurements Macro.

Table C.8.25.11-2. Subjective Refraction Measurements Macro Attributes

Attribute Name | Tag | Type | Attribute Description
--- | --- | --- | ---
Sphere Power | (0046,0146) | 1 | Refractive power of the eye that is the same in all meridians, measured at distance (optical infinity), in diopters.
Include Table C.8.25.6.1-1 “Cylinder Sequence Macro Attributes” |
Include Table C.8.25.6.2-1 “Prism Sequence Macro Attributes” |
Add Near Sequence | (0046,0100) | 1C | A sequence that specifies refractive measurements of the eye to correct for inability to focus at near while wearing the distance prescription. Only a single Item shall be included in this Sequence. Required if near point refraction is done.
>Add Power | (0046,0104) | 1 | Additional power relative to the distance correction, expressed in diopters, that allows best corrected visual acuity at the defined viewing distance.
>Viewing Distance | (0046,0106) | 3 | The distance, in cm, for testing visual acuity corresponding to the value of Add Power (0046,0104) in this Sequence.
Add Intermediate Sequence | (0046,0101) | 1C | A sequence that specifies refractive measurements of the eye to correct for inability to focus at intermediate distance while wearing the distance prescription. Only a single Item shall be included in this Sequence. Required if intermediate point refraction is done.
>Add Power | (0046,0104) | 1 | Additional power relative to the distance correction, expressed in diopters, that allows best corrected visual acuity at the defined viewing distance.
>Viewing Distance | (0046,0106) | 3 | The distance, in cm, for testing visual acuity using the value of Add Power (0046,0104) in this Sequence item.
Add Other Sequence | (0046,0102) | 1C | A sequence that specifies refractive measurements of the eye to correct for inability to focus at the below specified distance while wearing the distance prescription. Only a single Item shall be included in this Sequence. Required if refraction is done at less than distance (optical infinity), but at a distance other than "near" or "intermediate".
>Add Power | (0046,0104) | 1 | Additional power relative to the distance correction, expressed in diopters, that allows best corrected visual acuity at the defined viewing distance.
>Viewing Distance | (0046,0106) | 3 | 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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DICOM PS3.3 2017a - Information Object Definitions