Future Step For Self-Tonometry Research with Brain Computer Interface

I am working on plans to take my self-tonometry research to the next level by incorporating physiological monitoring with frequent self-tonometry. I have been focusing on using heart rate variability as a measure of the functioning of the autonomic nervous system (ANS). The goal of this is to correlate changes in intraocular pressure with changes in ANS state. My preliminary work looks promising. Tools to monitor ECG-accurate heart rate variability are affordable to people engaged in self-tonometry research.