Table C.8.25.6.2-1 describes the attributes for the Prism Sequence Macro
Table C.8.25.6.2-1. Prism Sequence Macro Attributes
|
Attribute Name |
Tag |
Type |
Attribute Description |
|---|---|---|---|
|
Prism Sequence |
(0046,0028) |
1C |
A sequence that specifies prism that is measured in a lens, or that is required to correct for a patient's ocular misalignment. Required if prism is measured in the lens or if this part of a refraction is done for a patient. Only a single item shall be included in this sequence. NoteA prism is a wedge shaped lens that deviates light toward the base and shifts the apparent image toward its apex. |
|
>Horizontal Prism Power |
(0046,0030) |
1 |
The power of a prism to bend light in the horizontal direction, in prism diopters. |
|
>Horizontal Prism Base |
(0046,0032) |
1 |
Direction of the base of the measured prism -- either in (toward the nose), or out (away from the nose) Enumerated Values:
|
|
>Vertical Prism Power |
(0046,0034) |
1 |
The power of a prism to bend light in the vertical direction, in prism diopters. |
|
>Vertical Prism Base |
(0046,0036) |
1 |
Direction of the base of the measured prism -- either up, or down. Enumerated Values:
|