DICOM PS3.3 2019b - Information Object Definitions
C.8.25.16.5 Calculated IOL Macro

Table C.8.25.16-5 describes the Attributes for the Calculated IOL Macro.

Table C.8.25.16-5. Calculated IOL Macro Attributes

Attribute Name

Tag

Type

Attribute Description

IOL Manufacturer

(0022,1093)

1

Name of the manufacturer that produced the lens.

Implant Name

(0022,1095)

1

The (product) name of the lens.

Type of Optical Correction

(0022,1046)

3

Type of the optical correction achieved by the IOL.

Enumerated Values:

SPHERICAL

TORIC

Lens Constant Sequence

(0022,1092)

1

Constants used in calculation of intraocular lens power. These constants are a characteristic of the model of intraocular lens being considered for use in cataract surgery.

One or more Items shall be included in this Sequence.

>Concept Name Code Sequence

(0040,A043)

1

Constant type used in calculation of intraocular lens power.

Only a single Item shall be included in this Sequence.

>>Include Table 8.8-1 “Code Sequence Macro Attributes”

DCID 4237 “Lens Constant Type”

>Numeric Value

(0040,A30A)

1

The value of the constant used.

IOL Power Sequence

(0022,1090)

1

Information needed to select the intraocular lens power for cataract surgery.

One or more Items shall be included in this Sequence.

>IOL Power

(0022,1053)

1

The intraocular lens power, in diopters.

If Type of Optical Correction (0022,1046) is TORIC, this value represents the spherical equivalent of the toric intraocular lens power.

>Toric IOL Power Sequence

(0022,1047)

1C

The toric intraocular lens power.

Only a single Item shall be included in this Sequence.

Required if Type of Optical Correction (0022,1046) is TORIC.

>>Include Table C.8.25.16-7 “Calculated Toric Power Macro Attributes”

>Predicted Refractive Error

(0022,1054)

1

The predicted postoperative refractive error (i.e., amount of near or far sightedness), in diopters.

>Predicted Toric Error Sequence

(0022,1048)

1C

The predicted postoperative toric error.

Only a single Item shall be included in this Sequence.

Required if Type of Optical Correction (0022,1046) is TORIC.

>>Include Table C.8.25.16-7 “Calculated Toric Power Macro Attributes”

>Implant Part Number

(0022,1097)

2

The (product) identifier of the lens.

>Pre-Selected for Implantation

(0022,1049)

3

Indicates whether the intraocular lens specified by this Sequence Item has been pre-selected for implantation or not.

Enumerated Values:

YES

NO

Only one Item in IOL Power Sequence (0022,1090) shall contain the value YES.

IOL Power for Exact Emmetropia

(0022,1121)

2

The IOL power that would be required to achieve exact emmetropia, or no need for glasses at distance after surgery, in diopters.

If Type of Optical Correction (0022,1046) is TORIC, this value represents the spherical equivalent of the toric intraocular lens power for exact emmetropia.

Toric IOL Power for Exact Emmetropia Sequence

(0022,104A)

2C

The toric IOL power that would be required to achieve exact emmetropia.

Zero or one Item shall be included in this Sequence.

Required if Type of Optical Correction (0022,1046) is TORIC.

>Include Table C.8.25.16-7 “Calculated Toric Power Macro Attributes”

IOL Power for Exact Target Refraction

(0022,1122)

2

The IOL power that would be required to exactly achieve Target Refraction (0022,1037), in diopters.

If Type of Optical Correction (0022,1046) is TORIC, this value represents the spherical equivalent of the toric intraocular lens power for exact target refraction.

Toric IOL Power for Exact Target Refraction Sequence

(0022,104B)

2C

The toric IOL power that would be required to exactly achieve Target Refraction (0022,1037).

Zero or one Item shall be included in this Sequence.

Required if Type of Optical Correction (0022,1046) is TORIC.

>Include Table C.8.25.16-7 “Calculated Toric Power Macro Attributes”

Calculation Comment Sequence

(0022,112A)

3

Comment, hints or warnings related to the intraocular lens calculation(s).

One or more Items are permitted in this Sequence.

See Section C.8.25.16.5.1.

>Calculation Comment Type

(0022,112B)

1

The type of the Calculation Comment (0022,112C).

Defined Terms:

INFORMATIVE

WARNING

>Calculation Comment

(0022,112C)

1

Comment related to the intraocular lens calculation(s).


C.8.25.16.5.1 Calculated IOL Macro Attributes Attributes
C.8.25.16.5.1 Calculation Comment Sequence

Specific behaviors associated with Calculation Comment Type (0022,112B) are left to implementations to define. For example, the user might be expected to be notified about a comment with a type of WARNING whereas they might have to seek out comments with a type of INFORMATIVE. However, since this is an optional Attribute, and one that was added to this Module after its original definition, and there are no SOP Class specific constraints on display behavior, the sender cannot be guaranteed that a receiving system or user will not ignore or discard the comments.

DICOM PS3.3 2019b - Information Object Definitions