How UV, the visible spectrum and infrared wavelengths may help or harm vision. Light is fundamental not only to vision but also to human physiology. Yet different wavelengths of light can have profoundly different effects on the eyes—some healing, some harmful and some simply misunderstood. As an integrative neuro-ophthalmologist, I frequently encounter patients and also fellow practitioners who are unsure about which forms of light support ocular health and which threaten it.
