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Retinal thickness measurement is one of the most important examinations in the follow up of exudative age-related macular degeneration. Prior studies have shown that there are a series of algorithm line failures in OCT examinations. This study is conducted to compare the quality of the examinations of to different spectral domain OCT machines concerning the positioning of algorithm lines. Furthermore the reproducibility of the examinations id tested, both machines provide different techniques to guarantee that in repeated examinations the same location is examined.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Group 1 | Intervention 1 Sequence of observers: observer1, observer 2, observer 1, observer 2 |
| |
| group 2 | intervention 1 sequence of observers: observer 2, observer 1, observer 2, observer 1 |
| |
| group 3 | intervention 2 sequence of observers: 1,2,1,2 |
| |
| group 4 | intervention 2 sequence of observers: 2,1,2,1 |
| |
| group 5 | intervention 1 sequence of observers 1,1,2,2 |
| |
| group 6 | intervention 1 sequence of observers 2,2,1,1 |
| |
| group 7 |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Cirrus-Spectralis | Device | 512x128 cúbe program of Cirrus OCT first retinal volume 121 line of Spectralis OCT thereafter |
|
| Measure | Description | Time Frame |
|---|---|---|
| Number of examinations with correctly set threshold algorithm lines | 1 day |
| Measure | Description | Time Frame |
|---|---|---|
| Differences of mean retinal thickness in the central region | 1 day | |
| Differences of retinal volume | 1 day | |
| Distance acuity |
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Inclusion Criteria:
Exclusion Criteria:
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male or female persons aged more than 50 years with exudative age related macular degeneration
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| Name | Affiliation | Role |
|---|---|---|
| Susanne Binder, MD, Prof | Ludwig Boltzmann Institute for Retinology and Biomicroscopic Laser Surgery | Study Chair |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Ludwig Boltzmann Institute for Retinology and Biomicroscopic Lasersurgery | Vienna | State of Vienna | 1030 | Austria |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 21791591 | Derived | Krebs I, Smretschnig E, Moussa S, Brannath W, Womastek I, Binder S. Quality and reproducibility of retinal thickness measurements in two spectral-domain optical coherence tomography machines. Invest Ophthalmol Vis Sci. 2011 Sep 1;52(9):6925-33. doi: 10.1167/iovs.10-6612. |
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male or femal persons age over 50 years with exudative age-related macular degeneration
intervention 2 sequence of observers: 1,1,2,2 |
|
| group 8 | intervention 2 sequence of observers: 2,2,1,1 |
|
| Spectralis-Cirrus | Device | retinal volume program 121 lines Spectralis OCT first 512x128 program Cirrus OCT thereafter |
|
| 1 day |
| Age | 1 day |
| Classification of the lesion | 1 day |