Which visual phenomenon may occur due to RF exposure from portable devices?

Cataracts can develop as a result of prolonged exposure to radiofrequency (RF) energy, particularly from devices that emit RF signals. This condition involves the clouding of the lens in the eye, which can lead to blurred vision and other visual impairments.

Research has indicated that specific types of RF radiation, especially at certain frequencies and intensities, can contribute to the formation of cataracts through thermal or non-thermal effects on the eye. The lens of the eye is particularly sensitive to the effects of RF energy, as it does not have a good blood supply to help regulate its temperature, making it more susceptible to damage from heat.

On the other hand, glaucoma, retinal detachment, and astigmatism do not have established connections to RF exposure. Each of these conditions relates more to structural or fluid changes within the eye rather than direct effects from RF energy. Thus, while they are significant eye health concerns, they are not typically associated with the same risk factors as cataracts in the context of RF exposure from portable devices.