Optically-based data will be compared to tonometry to determine correlation of pulse wave
- Between the ages of18-25 and 65-90 will be studied.
- Normotensive and hypertensive subjects
- Willing to provide informed consent
- has finger deformities or amputations that will prohibit proper sensor placement
- pregnant or actively trying to get pregnant
- Cardiogreen or other intravascular/tissue dyes less than 5 hours prior to the study.