Tunnel vision is defined as a limited field of vision where the individual retains his/her central vision but lacks peripheral vision. The vision straight ahead is good but the vision on the sides is limited.
Those who have tunnel vision often find it hard to navigate in areas that are dimly lighted.
What are the causes?
Various conditions can lead to tunnel vision.
- Loss of blood to certain regions of the brain can oftentimes lead to tunnel vision.
Engaging in some extreme sports can also cause the condition in which high acceleration might be linked as the cause. - Tumor pressing on the optic nerve
- Retinitis pigmentosa is a serious form of genetic eye condition
- Glaucoma is a condition affecting the optic nerve due to increased eye pressure
Is it an emergency?
Any form of vision loss or visual disruption can be alarming.
Stressful scenarios can oftentimes lead to tunnel vision. The visual field might be compromised during a panic attack. Engaging in some extreme sports can also cause the condition in which high acceleration might be linked as the cause.
Since the vision is significantly limited, abrupt onset of tunnel vision can be dangerous and must be dealt with as a medical emergency.
On the other hand, if tunnel vision is associated to gradual loss of vision from certain eye conditions such as glaucoma, it is not regarded as a medical emergency. The doctor will closely monitor for any visual changes while under treatment.
Other important considerations
It is important to note that flying an airplane can put one at risk for tunnel vision. Being exposed to air that has been polluted by oils as well as hydraulic fluid can lead to the development of the condition. Brief visual issues are likely to occur among those who become sick when flying via an airplane.