Directions for Light Therapy

Administration

Bright light therapy should be used daily and consistently for best results.

Device

• Use a 10,000 lux light box that emits white light.
• The device should include eye-protective features, such as light diffusion and UV filters.
• Ultraviolet (UV) light is not required for treatment and should be avoided to reduce risk to the eyes and skin.
• Follow the manufacturer’s instructions for proper use.
  
  

Positioning and Distance

• Place the light box so it delivers 10,000 lux while seated.
• The light should be positioned slightly above eye level and angled downward to reduce glare.
• Most light boxes achieve 10,000 lux at a distance of 40–80 cm (16–31 inches).
• Always confirm the correct distance using the manufacturer’s guidelines.
  
  

Time of Day

• Use light therapy in the early morning, soon after waking (for example, around 7:00 AM).
• Try to use it at the same time every day, including weekends and holidays.
  
  
• If morning light alone is not effective after 2–4 weeks, an additional evening session (for example, around 8:00 PM) may be considered under guidance.
  
  

Duration of Exposure

• Morning session: 30 minutes per day
• Evening session (if added): 30 minutes per day

Do not exceed recommended exposure unless advised by a clinician.

Looking at the Light

• Keep your eyes open during treatment.
• The light should be visible in your peripheral vision.
• You may glance at the light occasionally, but do not stare directly into it.
  
  

Activities During Light Therapy

• You may continue normal activities during treatment, such as:
  • Reading
  • Eating
  • Watching television
  • Working on a computer
• The light box can be placed on a table or stand to allow flexibility.
• Light therapy may also be used while doing light exercise, such as riding a stationary bicycle.