Early-stage glaucoma can be characterized by the reduction of peripheral
vision. What structures are responsible for peripheral vision? Why might
someone with this condition avoid driving at night?
Peripheral vision is primarily controlled by the rod photoreceptor cells in the retina, located on the outer edges of the eye. These cells are responsible for detecting dim light and motion, allowing us to see objects in our peripheral vision without directly looking at them.
In early-stage glaucoma, damage to the optic nerve can lead to a reduction in peripheral vision. This can result in a loss of the ability to see objects or movement in the outer edges of the visual field.
Someone with this condition may avoid driving at night because reduced peripheral vision can impair their ability to detect objects and movement in their surroundings, increasing the risk of accidents particularly in low light conditions. They may have difficulty seeing oncoming vehicles, pedestrians, or obstacles in their peripheral vision while driving at night, making it unsafe for them to operate a vehicle.