Hi Sheree, I am not familiar with the function of the Dikablis, but I have been in contact with Argus Science LLC, http://www.argusscience.com/. This company includes a number of the engineers and programmers who worked for Applied Sciences Laboratories (ASL). The company is led by Robert Wilson, who developed the Mobile Eye, after ASL secured the license from a group in the UK before 2005. Argus Science has the license for the ME. They also have the license for the software that ASL developed and have the expertise to service and update older ME's. So basically the same company but under a new name and leadership. It also appears they have retained their distributors network in most parts of the world. A good question, as I now a lot of researchers use ASL eye trackers.

Hi Sharee,

I'm currently using the Dikablis Professional Glasses for my project. As you may already be aware Ergoneers has two models i.e. Professional (Binocular, 60Hz, Full HD standard lens field camera) and Essential Glasses (Monocular, 50Hz, 768x576 Fish-eye lens scene camera). I have tried both systems. I'm not sure what aspects of performance you are referring to. Each eye tracker has its own pros and cons; purchasing a system ultimately depends on your questions and the type of variables you're trying to extract.

That said, the pupil tracking technology is fairly impressive in my opinion. I have bespectacled elderly participants with scratched lens coming through. Additionally, I even had polarised lens attached to their spectacles. So far, I haven't had any major problems with not being able to detect pupils, calibrate the system and obtain data. I would say it's fairly easy and straight forward to use.  

Regardless of the type of scientific research (with the assumption of extracting saccadic and fixational data), I probably won't recommend the Essential Glasses due to substantial lens distortion from the Fish-eye field camera. This has implications for calculating saccadic amplitude and velocity, which, ultimately has compounding effects on other variables including fixation durations etc. I would say the quality of the scene camera images from the Essential glasses is not comparable with the full HD images from the Professional glasses. 

I've had issues with eye camera 'shakes' when participants walk around due to the design of the hardware and this creates a lot false positives (saccades). Some of the data are just not physiologically possible. Unfortunately, the Ergoneers D-Lab software adopts a very simplistic way of parsing data i.e. solely based on velocity thresholds and doesn't allow manual correction for those errors. Currently, I'm not able to use the software to analyse my data.

Hope this helps...

Stacy

Hi Sheree, 

I used the Dikablis for my PhD work with older adults and people with Parkinson's. I performed the first validation/reliability test of the device for monitoring saccades. Check out my publications for more info. If you want any advice or anything just message me.

Cheers

Sam