Stress and the Eye Choice

Submitted by palmergrabner on Tue, 11/29/2022 - 20:59

Title Tweet: Stress and the Eye 

Tweet 1: We all know that stress is bad for mental health, but what about our physical health? Psychological stress can affect our physical bodies. One of these affected organs is the eye. 

Tweet 2: Specifically, stress raises the intraocular pressure (IOP) in the eye. IOP normally oscillates on a cycle between 12-21 mmHg. In most individuals, IOP peaks in their sleep! 

Tweet 3: Stress causes the IOP to fluctuate to a higher level, this results in changes to the DNA of the cells in the eye. These changes to the DNA make changes at the cellular level that accumulate to the level of an organ. 

Tweet 4: These epigenetic changes lead to the death of retinal ganglion cells as well as other cells in the eye salient toward vision. This can lead to conditions such as glaucoma. 

Tweet 5: The epigenetic changes caused by stress have also been linked to increased aging in the eye. When viewed through immunofluorescent techniques the head of the optic nerve in an old eye that has been chronically stressed shows a loss of neuronal activity. 


Tweet 5.5: While neurons get worn out over time, the loss in the old stressed eye more resembles that of glaucoma rather than the normal aging of the old control. 

Tweet 6: Ultimately, it is important that we take care of both our physical and mental health to keep our eyes working for a long time. 




Submitted by eeggers on Wed, 11/30/2022 - 11:27


I'm not really seeing the differences between the old and young eyes (except for the old stressed eye).  Could you say a little more about what the differences are?