Does the red light from a哺光仪 (eye irradiation device) harm the eyes?

Whether the red light from a哺光仪 (bu guang instrument) causes harm to the eyes depends on specific circumstances.

I. No Harm

The bu guang instrument is a type of red light therapy device that utilizes the interaction between photons and biological tissues, applying light stimulation to the fundus of the eye. It can improve ocular microcirculation and regulate the eye's axial length, thus providing auxiliary therapeutic benefits for vision recovery and correction. When a properly manufactured bu guang instrument from a reputable manufacturer is used correctly and within the recommended duration, it generally does not cause harm to the eyes.

II. Potential Harm

The electrical circuitry of bu guang instruments may be unstable. If the device is produced by an unqualified or substandard manufacturer, prolonged or frequent intermittent use could lead to cumulative thermal energy in the eye and photochemical toxicity caused by laser exposure, potentially damaging the eyes. In severe cases, this may result in irreversible eye damage.

Individuals who already suffer from light-sensitive eye conditions, retinal hemorrhage, macular degeneration, or other fundus diseases are generally advised against using bu guang instruments.