Perimetry from Optopol, a review of PTS 2000.

[@manuelsinger957]

Thank you for this very comprehensive review! I am right now thinking about what perimeter to get and since I have a Revo FC 130 this is one of the candidates. Might I ask you some questions: in results presentation is it possible to get a colour map similar to octopus? Or get a progression graph showing MD over time? Also what exactly does it mean that MD and PSD are not adjusted to the normal population? You mentioned again that this device in combination with Revo is good for glaucoma specialists. Did you not find that the pRNFL measurements do tend to have significant variability even measuring the same eye multiple times in a row? Also I personally miss the Tomogram which corresponds to the pRNFL (TSNIT) thickness plot to check the segmentation. Again thank you very much for this great review. Did you think about doing a follow up video to show some examples of glaucoma eyes and how one could detect and follow up glaucoma with the different tests and plots? Kind regards

[@ocularimagingaficionado8649]

Thanks for watching and commenting! Progression graph with MD: sure there is an option in the progression tab. Regarding the Octopus color map there is no option like that. When I said that MD and PSD indices are not age-matched I referred to Zeiss HFA where MD and PSD global indices are colored in green, yellow, or red and basically work as 95%, 5%, or 1% probability indicators. Regarding low repeatability of the RNFL; what I see most often is caused by artifacts like blinking, motion, or wrong positioning of the scan when the ONH is not centered, also in cases of lower RNFL then 50 um OCT is generally not reliable. Having said that, patients with some large or tilted ONH the segmentation had to be redone manually because the repeatability was really off between visits. I know that Optopol is getting the FDA approval for Revo, so they need to upgrade their RNFL segmentation this means that soon we will get the new version of their software with better segmentation. The Tonogram feature is nice with Cirrus or Topcon, as it allows a quick view of the segmentation errors so I agree that this is a shortcoming. However you can change the size and thickness of the TSNIT ring to verify segmentation on the plot. You just need to click on the RNFL map and then you see the segmentation. Thank you once more for your kind words. In this channel, I want to focus on reviewing machines and our clinic has many new ones like Anterion or Solix so I will have plenty of work with them.

[@manuelsinger957]

@@ocularimagingaficionado8649thank you for your answer and your continued work on this unsponsored presentations. You are doing something that is unique globally