How long have you been seeing this red line in your vision?
Are there any floaters or flashes of light as well?
Did you have any trauma to your eye?
It is important to get a dilated eye examination done by an ophthalmologist to ensure that everything is fine with the posterior part of the eye i.e. retina and vitreous. It may be nothing but could also be a posterior vitreous detachment, vitreous hemorrhage, retinal detachment etc. If you are still seeing it you should see an ophthalmologist. Thanks and best wishes.
I do not think so. Do you suffer from anxiety disorder? That can also cause it. Seeing an ophthalmologist may confirm the diagnosis. Thanks.