Материал: part16

DICOM PS3.16 2020a - Content Mapping Resource​

Page 1201​

Code Value​

Code Meaning​

Definition​

Notes​

Strategy​

testing.​

111817​ Visual Field SITA-Fast Test​

Similar to SITA-Standard but with less strict criteria for​

Strategy​

closing test points. Intended for patients who must be​

tested in the shortest possible time.​

Strategy​

sensitivity at each test point in the threshold test pattern​

by adjusting intensity by 4 dB steps until the patient​

changes their response, and then adjusts the intensity​

in the opposite direction by 2 dB steps until the patient​

changestheirresponseagain.Thelaststimulusseenby​

the patient is recognized as the threshold for that point.​

The starting values are determined by first thresholding​

a "primary" point in each quadrant then using the results​

ofeachprimarypointtodeterminethestartingvaluesfor​

neighboring points.​

111819​ Visual Field FastPac Test​

SimilartotheFullThresholdalgorithmexceptthatitsteps​

Strategy​

by 3 dB and only crosses the threshold only once.​

111821​ Visual Field Optima Test​

Similar to FastPac except that the steps are​

Strategy​

pseudo-dynamic (differ based on the intensity of the last​

presentation).​

111822​ Visual Field Two-Zone Test​

Suprathreshold testing strategy, in which each point is​

Strategy​

initially tested using stimulus that is 6 dB brighter than​

theexpectedhillofvision.Ifthepatientdoesnotrespond,​

the stimulus is presented a second time at the same​

brightness. If the patient sees either presentation, the​

point is marked as "seen"; otherwise it is marked as "not​

seen".​

Page 1202​

DICOM PS3.16 2020a - Content Mapping Resource​

Code Value​

Code Meaning​

Definition​

Notes​

In: Morales J, Weitzman ML, Gonzalez de la Rosa M.​

Comparison between Tendency-Oriented Perimetry​

(TOP)andoctopusthresholdperimetry.Ophthalmology,​

2000, 107: 134-142.​

111826​ Visual Field Dynamic Test​

Dynamicstrategyisafastthresholdingstrategyreducing​

Strategy​

test duration by adapting the dB step sizes according to​

thefrequency-of-seeingcurveofthethreshold.Reduction​

of test time compared to normal full threshold strategy​

30-50%.​

111827​ Visual Field Normal Test​

Traditional full threshold staircase strategy. Initial​

Strategy​

intensities are presented, based on anchor point​

sensitivities in each quadrant and based on already​

known neighboring sensitivities. In a first run, thresholds​

arechangedin4dBstepsuntilthefirstresponsereversal.​

Then the threshold is changed in 2 dB steps until the​

second response reversal. The threshold is calculated​

as the average between the last seen and last not-seen​

stimulus, supposed to correspond with the 50% point in​

the frequency-of-seeing curve.​

DICOM PS3.16 2020a - Content Mapping Resource​

Page 1203​

Code Value​

Code Meaning​

Definition​

Notes​

111837​ Visual Field CLASS Strategy​

Asuprathresholdscreeningstrategy.Thestartingstimuli​

intensities depend on the classification of the patient's​

visual hill by measuring the central (fovea) or peripheral​

(15° meridian) threshold. The result of each dot slightly​

underestimates the sensitivity value (within 5 dB).​

111838​

Age corrected​

Modefordeterminingthestartingluminanceforscreening​

test points - the starting luminance s is chosen based on​

the age of the patient.​

111839​

Threshold related​

Modefordeterminingthestartingluminanceforscreening​

test points - the starting luminance is chosen based on​

the results of thresholding a set of "primary" test points​

(one in each quadrant).​

111840​

Single luminance​

Modefordeterminingthestartingluminanceforscreening​

test points - in this case, all starting luminance is set to​

the same value.​

111841​

Foveal sensitivity related​

Modefordeterminingthestartingluminanceforscreening​

test points - the starting luminance is chosen based on​

the result of the foveal threshold value.​

111842​ Related to non macular​

Modefordeterminingthestartingluminanceforscreening​

sensitivity​

test points - the starting luminance is chosen based on​

the result of four threshold values measured near the​

15° meridian (one in each quadrant).​

111843​

Automated Optical​

Real time evaluation of the camera image to recognize​

blinks and fixation losses with influence on the test​

procedure. Blinks that interfere with stimuli presentation​

cause the automated repetition of such stimulus​

presentations. Fixation losses can be used to delay the​

stimulus presentation until correct fixation is regained.​

111844​

Blind Spot Monitoring​

A method of monitoring the patient's fixation by​

periodically presenting stimulus in a location on the​

background surface that corresponds to the patient's​

blind spot.​

111845​

Macular Fixation Testing​

A method of monitoring the patient's fixation by​

presenting the stimulus to the patient's macula.​

Page 1204​

DICOM PS3.16 2020a - Content Mapping Resource​

Code Value​

Code Meaning​

Definition​

Notes​

111846​

Observation by Examiner​

A method of monitoring the patient's fixation by​

observation from the examiner of the patient.​

111847​

Outside normal limits​

Analysis Results are outside normal limits.​

111848​

Borderline​

Analysis Results are borderline.​

111849​

Abnormally high sensitivity​

Analysis Results identify abnormally high sensitivity.​

111850​ General reduction in sensitivity​Analysis Results identify general reduction in sensitivity.​

111851​ Borderlineandgeneralreduction​AnalysisResultsidentifyBorderlineandgeneralreduction​

in sensitivity​

in sensitivity.​

111852​

Visual Field Index​

Index of a patient's remaining visual field normalized for​

both age and generalized defect.​

111853​ Visual Field Loss Due to Diffuse​Estimate of the portion of a patient's visual field loss that​

Defect​

is diffuse (i.e., spread evenly across all portions of the​

visual field).​

111854​ Visual Field Loss Due to Local​Estimate of the portion of a patient's visual field loss that​

Defect​

is local (i.e., not spread evenly across all portions of the​

visual field).​

111855​

Glaucoma Hemifield Test​

Ananalysisofasymmetrybetweenzonesofthesuperior​

Analysis​

and inferior visual field. It is designed to be specific for​

defects due to glaucoma.​

111856​ Optical Fixation Measurements​Thedataoutputofanopticalfixationmonitoringprocess,​

consisting of a list of positive and negative numbers​

indicating the quality of patient fixation over the course​

of a visual field test. The value 0 represents the initial​

fixation. Negative numbers indicate a measuring error​

(i.e., the patient blinked). Positive numbers quantify the​

degree of eccentricity from initial fixation.​

111860​

Haigis Toric​

The Haigis Toric IOL calculation formula.​

Haigis, Wolfgang. Toric Iol Power Calculation. 2014.​

http://www.semanticscholar.org/paper/​

Toric-Iol-Power-Calculation-Haigis/​

033838182a57a1d2948ac7d3b115855e29d03fad​

111861​

Haigis-L Toric​

The Haigis-L Toric IOL calculation formula.​

Haigis W, Intraocular lens calculation after refractive​

surgery for myopia: Haigis-L formula. J Cataract Refract​

Surg, 2008. 34(10): 1658-63.​

doi:10.1016/j.jcrs.2008.06.029​

111862​

Barrett Toric​

The Barrett Toric IOL calculation formula.​

Abulafia,A.,etal.,Predictionofrefractiveoutcomeswith​

toric intraocular lens implantation. J Cataract Refract​

Surg, 2015. 41(5): p. 936-44.​

doi:10.1016/j.jcrs.2014.08.036​

111863​

Barrett True-K​

The Barrett True-K IOL calculation formula.​

Abulafia,A.,etal.,AccuracyoftheBarrettTrue-Kformula​

for intraocular lens power prediction after laser in situ​

Barrett, G.D., An improved universal theoretical formula​

for intraocular lens power prediction. J Cataract Refract​

Surg, 1993. 19: p. 713-720.​

doi:10.1016/S0886-3350(13)80339-2​

111866​

Barrett Lens Factor​

The "Barrett Lens Factor" constant used in IOL​

calculation.​

111867​

Barrett Design Factor​

The "Barrett Design Factor" constant used in IOL​

calculation.​

111900​

Macula centered​

Animageofatleast15°angularsubtendthatiscentered​

on the macula; see Section U.1.8 “Relative Image​

Position Definitions” in PS3.17.​

111901​

Disc centered​

Animageofatleast15°angularsubtendthatiscentered​

on the optic disc; see Section U.1.8 “Relative Image​

Position Definitions” in PS3.17.​

111902​

Lesion centered​

An image of any angular subtend that is centered on a​

lesion located in any region of the fundus; see​

Section U.1.8 “Relative Image Position Definitions” in​

PS3.17.​

111903​

Disc-macula centered​

An image of at least 15° angular subtend centered​

midway between the disc and macula and containing at​

least a portion of the disc and both the disc and the​

macula; see Section U.1.8 “Relative Image Position​

Definitions” in PS3.17.​

111904​

Mid-peripheral-superior​

An image of at least 15° angular subtend positioned​

betweenthecentralzoneandtheequator,andspanning​

boththesuperior-temporalandsuperior-nasalquadrants​

ofthefundus;seeSectionU.1.8“RelativeImagePosition​

Definitions” in PS3.17.​

111905​

Mid-peripheral-superiortemporal​An image of at least 15° angular subtend positioned​

between the central zone and the equator in the​

superior-temporal quadrant of the fundus; see​

Section U.1.8 “Relative Image Position Definitions” in​

PS3.17.​

111906​

Mid-peripheral-temporal​

An image of at least 15° angular subtend positioned​

betweenthecentralzoneandtheequator,andspanning​

both the superior-temporal and inferior-temporal​

quadrants of the fundus; see Section U.1.8 “Relative​

Image Position Definitions” in PS3.17.​