C.8.26.2 Visual Field Static Perimetry Test Parameters Module
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#### 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.8.26.2-1. Visual 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 Table 8.8-1 “Code Sequence Macro Attributes” | Defined CID 4252 “Visual Field Static Perimetry Screening Test Modes”
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 Table 8.8-1 “Code Sequence Macro Attributes” | Defined CID 4255 “Visual Field Illumination Color”
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 Table 8.8-1 “Code Sequence Macro Attributes” | Defined CID 4255 “Visual Field Illumination Color”
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.

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C.8.26 Visual Field Static Perimetry Measurements Modules | Home | C.8.26.3 Visual Field Static Perimetry Test Reliability Module