C.8.26 Visual Field Static Perimetry Measurements Modules

C.8.26.1 Visual Field Static Perimetry Measurements Series Module

Table C.8.26.1-1 specifies the Attributes that identify and describe general information about the Visual Field Static Perimetry Measurements Series.

Table C.8.26.1-1VISUAL FIELD STATIC PERIMETRY MEASUREMENTS SERIES MODULE ATTRIBUTES

Attribute Name Tag Type Attribute Description
Modality (0008,0060) 1 Type of equipment that originally acquired the data used to create the measurements in this Series. Enumerated Values: OPV See section C.7.3.1.1.1 for further explanation.
Referenced Performed Procedure Step Sequence (0008,1111) 1C Uniquely identifies the Performed Procedure Step SOP Instance to which the Series is related (e.g. a Modality or General-Purpose Performed Procedure Step SOP Instance). Only a single Item shall be included in this sequence. Required if the Modality Performed Procedure Step SOP Class, or General Purpose Performed Procedure Step SOP Class is supported.
>Include ‘SOP Instance Reference Macro’ Table 10-11
Request Attributes Sequence (0040,0275) 3 Sequence that contains attributes from the Imaging Service Request. One or more Items are permitted in this sequence.
>Include ‘Request Attributes Macro’ Table 10-9 In this Module Reason for Requested Procedure Code Sequence (0040,100A) has the Defined Context ID is 4256. Note: Reason for Requested Procedure Code Sequence (0040,100A) may be used to provide whether the test in the Series was taken for screening or diagnostic (quantitative) purposes. In this Module Scheduled Protocol Code Sequence (0040,0008) has the Defined Context IDs 4250 and 4251. Note: Scheduled Protocol Code Sequence (0040,0008) may be used to provide test pattern and test strategy. No Baseline Context IDs are defined for other Attributes.
Include ‘Performed Procedure Step Summary Macro’ Table 10-16 In this Module attribute Performed Protocol Code Sequence (0040,0260) is Type 1 and the Defined Context ID is 4250 and 4251. Note: Performed Protocol Code Sequence (0040,0260) is used to provide test pattern and test strategy. In this Module attribute Protocol Context Sequence (0040,0440) is Type 1 and the Defined Context ID is 4256. Note: Protocol Context Sequence (0040,0440) is used to provide whether the test in the Series were taken for screening or diagnostic purposes. No Baseline Context IDs are defined for other Attributes.

C.8.26.2 Visual Field Static Perimetry Test Parameters Module

Table C.8.26.2-1 defines the Attributes used to represent the parameters used during a patient’s visual field test.

Table C.8.26.2-1VISUAL FIELD STATIC PERIMETRY TEST PARAMETERS MODULE ATTRIBUTES

Attribute Name Tag Type Attribute Description
Visual Field Horizontal Extent (0024,0010) 1 The maximum horizontal angular subtend (diameter or width) of the tested visual field, in degrees.
Visual Field Vertical Extent (0024,0011) 1 The maximum vertical angular subtend (diameter or height) of the tested visual field, in degrees.
Visual Field Shape (0024,0012) 1 The shape of the visual field tested. Defined Terms: RECTANGLE CIRCLE ELLIPSE
Screening Test Mode Code Sequence (0024,0016) 1C Mode used to determine how the starting luminance values and expected thresholds are chosen. Only a single Item shall be included in this sequence. Required if Content Item Modifier Sequence (0040,0441) within Performed Protocol Code Sequence (0040,0260) contains an item with the value (R-42453, SRT, “Screening”). May be present otherwise.
>Include ‘Code Sequence Macro’ Table 8.8-1 Defined Context ID is 4252
Maximum Stimulus Luminance (0024,0018) 1 Maximum luminance of stimulus, in candelas per square meter (cd/m²).
Background Luminance (0024,0020) 1 Background luminance of the device, in candelas per square meter (cd/m²). Note: This value is easily convertible to apostilb, which is used only in perimetry and is not a standardized unit.
Stimulus Color Code Sequence (0024,0021) 1 Color of light stimulus presented to the patient. Only a single Item shall be included in this sequence.
>Include ‘Code Sequence Macro’ Table 8.8-1 Defined Context ID is 4255
Background Illumination Color Code Sequence (0024,0024) 1 Color of the background illumination of the visual field device. Only a single Item shall be included in this sequence.
>Include ‘Code Sequence Macro’ Table 8.8-1 Defined Context ID is 4255
Stimulus Area (0024,0025) 1 Area of light stimulus presented to the patient, in degrees squared.
Stimulus Presentation Time (0024,0028) 1 The duration of time that a light stimulus is presented to a patient per each individual test point, in milliseconds. Note: This time is the same for each stimulus presentation.

C.8.26.3 Visual Field Static Perimetry Test Reliability Module

Table C.8.26.3-1 defines the Attributes used to represent the test reliability parameters determined during a patient’s visual field test.

Table C.8.26.3-1VISUAL FIELD STATIC PERIMETRY TEST RELIABILITY MODULE ATTRIBUTES

Attribute Name Tag Type Attribute Description
Fixation Sequence (0024,0032) 1 The patient’s gaze stability information during the visual field test. Only a single Item shall be included in this sequence.
>Fixation Monitoring Code Sequence (0024,0033) 1 The device strategy used to monitor the patient's fixation. One or more Items shall be included in this sequence.
>>Include ‘Code Sequence Macro’ Table 8.8-1 Defined Context ID is 4253
>Fixation Checked Quantity (0024,0035) 1C The number of times that the patient’s gaze fixation is checked. Required if Fixation Monitoring Code Sequence (0024,0033) contains an item with the value (111844, DCM, “Blind Spot Monitoring”) or (111845, DCM, “Macular Fixation Testing”). May be present otherwise.
>Patient Not Properly Fixated Quantity (0024,0036) 1C The number of times the patient’s gaze is not properly fixated. Required if Fixation Monitoring Code Sequence (0024,0033) contains an item with the value (111844, DCM, “Blind Spot Monitoring”) or (111845, DCM, “Macular Fixation Testing”). May be present otherwise.
>Excessive Fixation Losses Data Flag (0024,0039) 1 Whether the device was able to determine excessive fixation losses. Enumerated Values: YES NO
>Excessive Fixation Losses (0024,0040) 1C The number of fixation losses is outside of implementation-specific limits. Enumerated Values: YES NO Required if Excessive Fixation Losses Data Flag (0024,0039) is YES.
Visual Field Catch Trial Sequence (0024,0034) 1 The reliability of the patient’s responses to the visual field test. Only a single Item shall be included in this sequence.
>Catch Trials Data Flag (0024,0055) 1 Whether catch trials data were performed. Enumerated Values: YES NO
>Negative Catch Trials Quantity (0024,0048) 1C Total number of times the patient’s visual attention was tested using stimuli brighter than previously seen luminance (negative catch trials). Required if Catch Trials Data Flag (0024,0055) is YES.
>False Negatives Quantity (0024,0050) 1C Total number of stimuli that were not seen by the patient but were previously seen at a lower luminance earlier in the visual field test (false negatives). Required if Catch Trials Data Flag (0024,0055) is YES.
>False Negatives Estimate Flag (0024,0045) 1 Whether the device was able to estimates false negatives. Enumerated Values: YES NO
>False Negatives Estimate (0024,0046) 1C Estimated percentage of all stimuli that were not seen by the patient but were previously seen at a lower luminance earlier in the visual field test (false negative responses), as percent. Required if False Negatives Estimate Flag (0024,0045) is YES.
>Excessive False Negatives Data Flag (0024,0051) 1 Whether the device was able to determine excessive false negatives. Enumerated Values: YES NO
>Excessive False Negatives (0024,0052) 1C The false negative estimate is outside of implementation-specific limits. Enumerated Values: YES NO Required if Excessive False Negatives Data Flag (0024,0051) is YES.
>Positive Catch Trials Quantity (0024,0056) 1C The total number of times the device behaved as if it was going to present a visual stimulus but did not actually present the stimulus (positive catch trials). Required if Catch Trials Data Flag (0024,0055) is YES.
>False Positives Quantity (0024,0060) 1C The total number of patient responses that occurred at a time when no visual stimulus was present (false positive responses). Required if Catch Trials Data Flag (0024,0055) is YES.
>False Positives Estimate Flag (0024,0053) 1 Whether the device was able to estimate false positives. Enumerated Values: YES NO
>False Positives Estimate (0024,0054) 1C Estimated percentage of all patient responses that occurred at a time when no visual stimulus was present (false positive responses), as percent. Required if False Positives Estimate Flag (0024,0053) is YES.
>Excessive False Positives Data Flag (0024,0061) 1 Whether the device was able to determine excessive false positives. Enumerated Values: YES NO
>Excessive False Positives (0024,0062) 1C The false positive estimate is outside of implementation-specific limit. Enumerated Values: YES NO Required if Excessive False Positives Data Flag (0024,0061) is YES.
Stimuli Retesting Quantity (0024,0042) 3 Total number of times in the course of a visual field exam that any location had to be retested at the same magnitude. Note: An example is that the patient received 20 stimuli and blinked twice, therefore need to present the stimuli two additional times in which case the value is 2.
Patient Reliability Indicator (0024,0069) 3 Vendor implementation specific text to provide an analysis and/or summary of patient reliability indicator/indices.
Comments on Patient’s Performance of Visual Field (0024,0044) 3 Operator's (test administrator) subjective comment on patient's performance.
Visual Field Test Reliability Global Index Sequence (0024,0317) 3 Information about various visual field indices related to test reliability. One or more Items are permitted in this sequence.
>Include ‘Ophthalmic Visual Field Global Index Macro’ C.8.26.3-2

C.8.26.3.1 Ophthalmic Visual Field Global Index Macro

Table C.8.26.3-2 describes the attributes for the Ophthalmic Visual Field Global Index Macro.

Table C.8.26.3-2OPHTHALMIC VISUAL FIELD GLOBAL INDEX MACRO ATTRIBUTES

Attribute Name Tag Type Attribute Description
Data Observation Sequence (0024,0325) 1 Information about various visual field global indexes. Only a single Item shall be included in this sequence.
>Include ‘Content Item Macro’ Table 10-2 Value Type (0040,A040) shall be NUMERIC or CODE. Concept Name Code Sequence (0040,A043) shall use Context ID 4257. Concept Code Sequence (0040,A168) shall use Context ID 4254.
Index Normals Flag (0024,0338) 1 Whether normative data exists for this index. Enumerated Values: YES NO
Index Probability Sequence (0024,0344) 1C Probability value and software algorithm used to provide the index. Only a single Item shall be included in this sequence. Required if Index Normals Flag (0024,0338) is YES.
>Index Probability (0024,0341) 1 Probability for the index value within the normal population, in percent.
> Include Algorithm Identification Macro Table 10-19

C.8.26.4 Visual Field Static Perimetry Test Measurements Module

Table C.8.26.4-1 defines the Attributes used to represent the test measurement values determined during a patient’s visual field test.

Table C.8.26.4-1 VISUAL FIELD STATIC PERIMETRY TEST MEASUREMENTS MODULE ATTRIBUTES

Attribute Name Tag Type Attribute Description
Measurement Laterality (0024,0113) 1 Laterality of body part (eye) examined. See section C.8.26.4.1.1 for further explanation. Enumerated Values: R = right L = left B = both left and right together Note: This Attribute is mandatory, in order to ensure that measurements may be positioned correctly relative to one another for display. Note: Laterality (0020,0060) is a Series level Attribute and must be the same for all Measurements in the Series, hence it must be absent if multiple instances from different eyes are encoded.
Presented Visual Stimuli Data Flag (0024,0037) 1 Whether the device was able to determine presented visual stimuli. Enumerated Values: YES NO
Number of Visual Stimuli (0024,0038) 1C The total number of visual stimuli presented to the patient. This includes the number of stimuli repetitions. Required if Presented Visual Stimuli Data Flag (0024,0037) is YES.
Visual Field Test Duration (0024,0088) 1 Total time the visual field machine was actively presenting visual stimuli to patient, in seconds.
Foveal Sensitivity Measured (0024,0086) 1 Whether foveal sensitivity was measured. Enumerated Values: YES NO
Foveal Sensitivity (0024,0087) 1C Foveal Sensitivity is the reciprocal of foveal threshold (1/foveal threshold), in dB. Foveal Threshold is the minimum amount of luminance increment on a uniform background that can be detected by the patient at coordinates 0,0 (relative to the center of the patient’s fixation). See section C.8.26.4.1.2 for further explanation. Required if the value for Foveal Sensitivity Measured (0024,0086) is YES.
Foveal Point Normative Data Flag (0024,0117) 1 Existence of normative data base for the foveal point sensitivity. Enumerated Values: YES NO
Foveal Point Probability Value (0024,0118) 1C The percentile of the foveal point sensitivity within an age corrected normal visual field, in percent. Required if the value for Foveal Sensitivity Measured (0024,0086) is YES and Foveal Point Normative Data Flag (0024,0117) is YES.
Screening Baseline Measured (0024,0120) 1 Whether visual field screening baseline was measured. Enumerated Values: YES NO
Screening Baseline Measured Sequence (0024,0122) 1C Information about the starting luminance screening values. One or more Items shall be included in this sequence. Required if the value for Screening Baseline Measured (0024,0120) is YES.
>Screening Baseline Type (0024,0124) 1 Method used to determine starting luminance screening values. Enumerated Values: CENTRAL PERIPHERAL
>Screening Baseline Value (0024,0126) 1 Visual Field screening baseline value, in dB.
Blind Spot Localized (0024,0106) 1 Whether the blind spot was measured. Enumerated Values: YES NO
Blind Spot X-Coordinate (0024,0107) 1C The horizontal coordinate of the patient’s blind spot relative to the center of the patient’s fixation, in degrees, such that toward the right is positive. Required if the value for Blind Spot Localized (0024,0106) is YES. See section C.8.26.4.1.3 for further explanation.
Blind Spot Y-Coordinate (0024,0108) 1C The vertical coordinate of the patient’s blind spot relative to the center of the patient fixation, in degrees, such that up is positive. Required if the value for Blind Spot Localized (0024,0106) is YES. See section C.8.26.4.1.3 for further explanation.
Minimum Sensitivity Value (0024,0105) 1 The minimum sensitivity value generated by the equipment used for this visual field test, in dB.
Test Point Normals Data Flag (0024,0057) 1 Existence of normative data base for this set of test points. Enumerated Values: YES NO
Test Point Normals Sequence (0024,0058) 1C Normative data base used for this test sequence. Only a single Item shall be included in this sequence. Required if Test Point Normals Data Flag (0024,0057) is YES.
>Include ‘Data Set Identification Macro’ Table 10-22
Age Corrected Sensitivity Deviation Algorithm Sequence (0024,0065) 1C Software algorithm used to provide the probability that the age corrected sensitivity deviation values at each test point belong to a normal visual field. Only a single Item shall be included in this sequence. Required if Test Point Normals Data Flag (0024,0057) is YES.
>Include ‘Algorithm Identification Macro Table’ 10-19
Generalized Defect Sensitivity Deviation Algorithm Sequence (0024,0067) 1C Software algorithm used to provide the probability that the sensitivity deviation values at each test point belong to a normal visual field. Only a single Item shall be included in this sequence. Required if Test Point Normals Data Flag (0024,0057) is YES.
> Include Algorithm Identification Macro Table 10-19
Visual Field Test Point Sequence (0024,0089) 1 Information for each test point in the visual field. One or more items shall be included in this sequence.
>Visual Field Test Point X-Coordinate (0024,0090) 1 The horizontal coordinate of a single test point relative to the center of the patient fixation, in degrees, such that toward the right is positive.
>Visual Field Test Point Y-Coordinate (0024,0091) 1 The vertical coordinate of a single test point relative to the center of the patient fixation, in degrees, such that up is positive.
>Stimulus Results (0024,0093) 1 Whether the patient saw a stimulus presented at a luminance other than maximum, a presentation at maximum luminance, or did not see any presented stimulus. Enumerated Values: SEEN = stimulus seen at a luminance value less than maximum NOT SEEN = stimulus not seen SEEN AT MAX = stimulus seen at the maximum luminance possible for the instrument Note: SEEN AT MAX is a value only relevant to Screening tests.
>Sensitivity Value (0024,0094) 1C If Stimulus Results (0024,0093) is SEEN then this value is the sensitivity, in dB. Required if Content Item Modifier Sequence (0040,0441) within Performed Protocol Code Sequence (0040,0260) contains an item with the value (R-408C3, SRT, “Diagnostic”). May be present otherwise. Note: If this is not present, refer to the attribute Minimum Sensitivity Value (0024,0105).
>Retest Stimulus Seen (0024,0095) 3 Whether the retested stimulus presented was seen by the patient. Enumerated Values: YES NO
>Retest Sensitivity Value (0024,0096) 3 If the Retest Stimulus Seen (0024,0095) is YES, then this value is the sensitivity, in dB. Note: If this is not present, refer to the attribute Minimum Sensitivity Value (0024,0105).
>Quantified Defect (0024,0098) 3 Difference between the expected and the determined sensitivity, each in dB. Note: This field is only useful when the sensitivity is quantified. Some examples include Test Strategy Code Sequence (0024,0015) with items providing values such as Quantity-Defects, 2LT-Dynamic, 2LT-Normal.
>Visual Field Test Point Normals Sequence (0024,0097) 1C Information about normal values for each visual field test point. One or more items shall be included in this sequence. Required if Test Point Normals Data Flag (0024,0057) is YES.
>>Age Corrected Sensitivity Deviation Value (0024,0092) 1 Difference between the patient’s local sensitivity and the age corrected normal sensitivity, in dB.
>>Age Corrected Sensitivity Deviation Probability Value (0024,0100) 1 The percentile of the age corrected sensitivity deviation within the normal population of visual field, in percent.
>> Generalized Defect Corrected Sensitivity Deviation Flag (0024,0102) 1 Whether generalized defect corrected data are available for this point. Enumerated Values: YES NO
>>Generalized Defect Corrected Sensitivity Deviation Value (0024,0103) 1C The age corrected sensitivity deviation after correction for the Generalized Defect, in dB. Generalized defect is proportional to the loss in sensitivity shared by all points in the visual field. Required if Generalized Defect Corrected Sensitivity Deviation Flag (0024,0102) is YES.
>>Generalized Defect Corrected Sensitivity Deviation Probability Value (0024,0104) 1C The percentile of the generalized defect corrected sensitivity deviation within the normal population of visual field, in percent. Required if Generalized Defect Corrected Sensitivity Deviation Flag (0024,0102) is YES.

C.8.26.4.1 Visual Field Static Perimetry Test Measurement Attribute Descriptions

C.8.26.4.1.1 Measurement Laterality

When B (both left and right together) eyes are provided for Measurement Laterality (0024,0113) it shall mean that both eyes are open during the test (binocular). It shall not be used to provide two monocular tests (i.e. one for the left eye and one for the right). Two monocular tests require two SOP Instances and two monocular tests with one binocular test require three SOP Instances.

C.8.26.4.1.2 Foveal Sensitivity

For Foveal Sensitivity (0024,0087), the terminology commonly used for perimetric measurements is employed, with reference to visual thresholds designated by a decibel (dB) scale. The decibel scale for conventional perimetry is based on the maximum stimulus luminance that can be superimposed on a uniform background, and it is given a value of 0 dB of sensitivity. Sensitivity is the inverse of threshold (sensitivity = 1/threshold) and vice versa. In other disciplines, visual threshold is usually defined by the probability of seeing a difference in luminance, brightness, hue or saturation, or a difference in some other attribute exhibited by a given set of stimuli. As such, a threshold is usually described in terms of the minimum amount of luminance, contrast, hue or other attribute that can be minimally detected. However, many sources that refer to perimetry have described threshold in terms of decibel (dB) values rather than attributing the dB measures to sensitivity. It would be advisable to check each individual device to determine how dB is defined.

C.8.26.4.1.3 Blind Spot X and Y Coordinates

For Blind Spot X-Coordinate (0024,0107) and Blind Spot Y-Coordinate (0024,0108), the convention described below for the Cartesian coordinate system specifies that to the right is positive on the x axis and up is positive on the Y axis. Figure C.8.26.4.1-1 illustrates how visual fields are displayed in standard format with the temporal visual field from the right eye displayed to the right and the nasal visual field from the right eye to the left.

[pic]

Figure C.8.26.4.1-1 Convention of coordinate system used in visual field representation.

C.8.26.5 Visual Field Static Perimetry Test Results Module

Table C.8.26.5-1 defines the Attributes used to interpret the test results of a patient’s visual field test.

Table C.8.26.5-1VISUAL FIELD STATIC PERIMETRY TEST RESULTS MODULE ATTRIBUTES

Attribute Name Tag Type Attribute Description
Visual Field Mean Sensitivity (0024,0070) 1C Average sensitivity of the test points of the visual field, in dB. Required if Content Item Modifier Sequence (0040,0441) within the Performed Protocol Code Sequence (0040,0260) contains an item with the value (R-408C3, SRT, “Diagnostic”). May be present otherwise.
Visual Field Test Normals Flag (0024,0063) 1 Whether normals exist for this patient’s results. Enumerated Values: YES NO
Results Normals Sequence (0024,0064) 1C Information that represents the statistically normal results for patients from a referenced data base. Only a single Item shall be included in this sequence. Required if Visual Field Test Normals Flag (0024,0063) is YES.
> Include ‘Data Set Identification Macro’ Table 10-22
>Global Deviation from Normal (0024,0066) 1 Weighted average deviation from the age corrected normal field, in dB.
>Global Deviation Probability Normals Flag (0024,0059) 1 Whether normals exist for the global deviation probability. Enumerated Values: YES NO
>Global Deviation Probability Sequence (0024,0083) 1C Probability value and software algorithm used to provide the normality for the global deviation. Only a single Item shall be included in this sequence. Required if Global Deviation Probability Normals Flag (0024,0059) is YES.
>>Global Deviation Probability (0024,0071) 1 The percentile of the Global Deviation from Normal (0024,0066) value within the normal population, in percent.0024
>> Include ‘Algorithm Identification Macro Table’ 10-19
>Localized Deviation from Normal (0024,0068) 1 Weighted square root of loss variance, in dB.
>Local Deviation Probability Normals Flag (0024,0072) 1 Whether normals exist for the local deviation probability. Enumerated Values: YES NO
>Localized Deviation Probability Sequence (0024,0085) 1C Probability value and software algorithm used to provide the normality for the local deviation. Only a single Item shall be included in this sequence. Required if Local Deviation Probability Normals Flag (0024,0072) is YES..
>>Localized Deviation Probability (0024,0073) 1 The0024 percentile of the Localized Deviation from Normal (0024,0068) value within the normal population, in percent.0024
>> Include ‘Algorithm Identification Macro’ Table 10-19
Short Term Fluctuation Calculated (0024,0074) 1 Whether the short term fluctuation was calculated. Enumerated Values: YES NO
Short Term Fluctuation (0024,0075) 1C Average deviation of sensitivity for the repeated test locations, in dB. This is used to determine the consistency of the patient’s responses. Required if Short Term Fluctuation Calculated (0024,0074) is YES.
Short Term Fluctuation Probability Calculated (0024,0076) 1 Whether the short term fluctuation probability was calculated. Enumerated Values: YES NO
Short Term Fluctuation Probability (0024,0077) 1C The percentile of the Short Term Fluctuation (0024,0075) value within the normal population, in percent. Required if Short Term Fluctuation Probability Calculated (0024,0076) is YES.
Corrected Localized Deviation From Normal Calculated (0024,0078) 1 Whether the corrected localized deviation from normal was calculated. Enumerated Values: YES NO
Corrected Localized Deviation From Normal (0024,0079) 1C Weighted square root of loss variance corrected for short term fluctuation, in dB. Required if Corrected Localized Deviation From Normal Calculated (0024,0078) is YES.
Corrected Localized Deviation From Normal Probability Calculated (0024,0080) 1 Whether the corrected localized deviation from Normal probability was calculated. Enumerated Values: YES NO
Corrected Localized Deviation From Normal Probability (0024,0081) 1C The percentile of the Corrected Localized Deviation From Normal (0024,0079) value within the normal population, in percent. Required if Corrected Localized Deviation From Normal Probability Calculated (0024,0080) is YES.
Visual Field Global Results Index Sequence (0024,0320) 3 Information about various visual field indexes related to test results. One or more Items are permitted in this sequence.
>Include ‘Ophthalmic Visual Field Global Index Macro’ C.8.26.3-2

C.8.26.6 Ophthalmic Patient Clinical Information and Test Lens Parameters Module

Table C.8.26.6-1 defines the Attributes used to represent a patient’s clinical parameters during an ophthalmic test.

Table C.8.26.6-1OPHTHALMIC PATIENT CLINICAL and TEST LENS PARAMETERS MODULE ATTRIBUTES

Attribute Name Tag Type Attribute Description
Ophthalmic Patient Clinical Information Left Eye Sequence (0024,0114) 1C Information used to represent a patient’s clinical parameters during an ophthalmic test. Only a single Item shall be included in this sequence. Required if Measurement Laterality (0024,0113) is L or B.
>Include ‘Ophthalmic Patient Clinical Information and Test Lens Parameters Macro’ Table C.8.26.6-2
Ophthalmic Patient Clinical Information Right Eye Sequence (0024,0115) 1C Information used to represent a patient’s clinical parameters during an ophthalmic test. Only a single Item shall be included in this sequence. Required if Measurement Laterality (0024,0113) is R or B.
>Include ‘Ophthalmic Patient Clinical Information and Test Lens Parameters Macro’ Table C.8.26.6-2

C.8.26.6.1 Ophthalmic Patient Clinical Information and Test Lens Parameters Macro

Table C.8.26.6-2 describes the attributes for the Ophthalmic Patient Clinical and Test Lens Parameters Macro.

Table C.8.26.6-2OPHTHALMIC PATIENT CLINICAL INFORMATION AND TEST LENS PARAMETERS MACRO ATTRIBUTES

Attribute Name Tag Type Attribute Description
Refractive Parameters Used on Patient Sequence (0024,0112) 2 Refractive parameters used when performing visual field test. Zero or one Item shall be included in this sequence.
>Sphere 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.
Pupil Size (0046,0044) 2 The horizontal diameter measurement of the pupil, in mm. 
Pupil Dilated (0022,000D) 2 The patient’s pupils were pharmacologically dilated for this acquisition. Enumerated Values: YES NO If this tag is empty, no information is available.
Intra Ocular Pressure (0022,000B) 3 Value of intraocular pressure in mmHg.
Visual Acuity Measurement Sequence (0024,0110) 3 Measurements of a patient’s visual acuity. Only a single Item is permitted in this sequence.
>Include ‘Visual Acuity Measurement Macro' Table C.8.25.12-2