DICOM PS3.3 2019b - Information Object Definitions
C.8.25.16.2 Intraocular Lens Calculations Macro

Table C.8.25.16-2 describes the Attributes for the Intraocular Lens Calculations Macro.

Table C.8.25.16-2. Intraocular Lens Calculations Macro Attributes

Attribute Name

Tag

Type

Attribute Description

Target Refraction

(0022,1037)

1

The desired postoperative refractive error, in diopters.

Refractive Procedure Occurred

(0022,1039)

2

Whether or not a patient has had refractive surgery.

Enumerated Values:

YES

NO

Refractive Surgery Type Code Sequence

(0022,1040)

2C

Type of refractive surgery a patient has had.

Zero or more Items shall be included in this Sequence.

Required if the value of Refractive Procedure Occurred (0022,1039) is YES.

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

DCID 4234 “Refractive Surgery Types”

Refractive Error Before Refractive Surgery Code Sequence

(0022,1103)

2C

The patient's refractive error before any of the refractive surgeries listed in Refractive Surgery Type Code Sequence (0022,1040) were performed.

Zero or one Item shall be included in this Sequence.

Required if the value of Refractive Procedure Occurred (0022,1039) is YES.

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

DCID 4238 “Refractive Error Types”

Corneal Size Sequence

(0046,0047)

3

Corneal Size value and source.

Only a single Item is permitted in this Sequence.

>Corneal Size

(0046,0046)

1

The horizontal diameter measurement of the cornea, in mm.

>Source of Corneal Size Data Code Sequence

(0022,1036)

1

Source of the value of Corneal Size (0046,0046).

Only a single Item shall be included in this Sequence.

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

DCID 4240 “Ophthalmic Measurement or Calculation Data Source”

>Referenced SOP Sequence

(0008,1199)

1C

SOP Instance that is relevant to the interpretation of this SOP Instance.

Only a single Item shall be included in this Sequence.

See Section C.8.25.16.1.1 for further explanation.

Required if Source of Corneal Size Data Code Sequence (0022,1036) contains an Item with the value (111784, DCM, "Autorefraction Measurements SOP Instance").

>>Include Table 10-11 “SOP Instance Reference Macro Attributes”

Lens Thickness Sequence

(0022,1127)

3

Lens thickness value and source.

Only a single Item is permitted in this Sequence.

>Lens Thickness

(0022,1130)

1

The value for axial length of the lens in a patient's eye, in mm.

>Source of Lens Thickness Data Code Sequence

(0022,1132)

1

Source of the value of Lens Thickness (0022,1130).

Only a single Item shall be included in this Sequence.

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

DCID 4240 “Ophthalmic Measurement or Calculation Data Source”

>Referenced SOP Sequence

(0008,1199)

1C

SOP Instance that is relevant to the interpretation of this SOP Instance.

Only a single Item shall be included in this Sequence.

See Section C.8.25.16.1.1 for further explanation.

Required if Source of Lens Thickness Data Code Sequence (0022,1132) contains an Item with the value (111782, DCM, "Axial Measurements SOP Instance").

>>Include Table 10-11 “SOP Instance Reference Macro Attributes”

Anterior Chamber Depth Sequence

(0022,1128)

3

Anterior chamber depth value and source.

Only a single Item is permitted in this Sequence.

>Anterior Chamber Depth

(0022,1131)

1

The value for axial length of the anterior chamber, in mm.

>Source of Anterior Chamber Depth Data Code Sequence

(0022,1133)

1

Source of the value of Anterior Chamber Depth (0022,1131).

Only a single Item shall be included in this Sequence.

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

DCID 4240 “Ophthalmic Measurement or Calculation Data Source”

>Referenced SOP Sequence

(0008,1199)

1C

SOP Instance that is relevant to the interpretation of this SOP Instance.

Only a single Item shall be included in this Sequence.

See Section C.8.25.16.1.1 for further explanation.

Required if Source of Anterior Chamber Depth Data Code Sequence (0022,1133) contains an Item with the value (111782, DCM, "Axial Measurements SOP Instance").

>>Include Table 10-11 “SOP Instance Reference Macro Attributes”

Refractive State Sequence

(0022,001B)

2

Refractive state of the imaged eye at the time of acquisition.

Zero or one Item shall be included in this Sequence.

>Spherical 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.

>Source of Refractive Measurements Sequence

(0022,1134)

1

Refractive measurements source.

Only a single Item shall be included in this Sequence.

>>Source of Refractive Measurements Code Sequence

(0022,1135)

1

Source of values in Refractive State Sequence (0022,101B).

Only a single Item shall be included in this Sequence.

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

DCID 4240 “Ophthalmic Measurement or Calculation Data Source”

>>Referenced SOP Sequence

(0008,1199)

1C

SOP Instances that are relevant to the interpretation of this SOP Instance.

One or more Items shall be included in this Sequence.

See Section C.8.25.16.1.1 for further explanation.

Required if Source of Refractive Measurements Code Sequence (0022,1135) contains an Item with the value (111783, DCM, "Refractive Measurements SOP Instance").

>>>Include Table 10-11 “SOP Instance Reference Macro Attributes”

Include Table C.8.25.16-3 “Keratometry Macro Attributes”

Cornea Measurements Sequence

(0046,0110)

3

Cornea measurement values and source.

One or more Items are permitted in this Sequence.

>Include Table C.8.25.16-8 “Cornea Measurement Macro Attributes”

>Source of Cornea Measurement Data Code Sequence

(0046,0111)

1

Source of the values of Steep Corneal Axis Sequence (0046,0112) and Flat Corneal Axis Sequence (0046,0113).

Only a single Item shall be included in this Sequence.

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

DCID 4240 “Ophthalmic Measurement or Calculation Data Source”

>Referenced SOP Sequence

(0008,1199)

1C

SOP Instance that is relevant to the interpretation of this SOP Instance.

Only a single Item shall be included in this Sequence.

See Section C.8.25.16.1.1 for further explanation.

Required if Source of Cornea Measurement Data Code Sequence (0046,0111) contains an Item with the value (111757, DCM, "Keratometry Measurements SOP Instance").

>>Include Table 10-11 “SOP Instance Reference Macro Attributes”

IOL Formula Code Sequence

(0022,1028)

1

Formula used to calculate IOL power.

Only a single Item shall be included in this Sequence.

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

DCID 4236 “IOL Calculation Formula”

IOL Formula Detail

(0022,1029)

3

A free form text description of the of the IOL Formula Code Sequence (0022,1028) (e.g., a reference to the mathematical equation).

Include Table C.8.25.16-4 “IOL Ophthalmic Axial Length Macro Attributes”

Surgically Induced Astigmatism Sequence

(0022,1045)

3

The astigmatism that is expected to be induced by corneal incisions during cataract surgery.

Only a single Item is permitted in this Sequence.

>Cylinder Power

(0046,0147)

1

The cylinder power, in diopters.

>Cylinder Axis

(0022,0009)

1

The cylinder axis, in degrees.

Include Table C.8.25.16-5 “Calculated IOL Macro Attributes”


DICOM PS3.3 2019b - Information Object Definitions