What Is Equine Red Light Therapy?

Equine red light therapy, also known as photobiomodulation (PBM) or low-level laser therapy (LLLT), is a non-invasive treatment that uses specific wavelengths of red and near-infrared (NIR) light to stimulate healing, reduce pain, and improve cellular function in horses.

This technology is increasingly popular for managing pain, inflammation, and aiding muscle recovery in horses.

How It Works

The core mechanism of red light therapy is cellular. When the specific red and near-infrared light wavelengths penetrate the skin, they are absorbed by mitochondria—the “powerhouses” of cells.

This absorption stimulates the mitochondria to produce more adenosine triphosphate (ATP). ATP is the primary energy source for cells. This boost in cellular energy enhances cell function, accelerates tissue repair, and reduces inflammation.

• Red Light (e.g., 600-700nm, 660nm): Primarily targets surface tissues like the skin. It’s effective for wound healing, skin conditions, and superficial issues.
• Near-Infrared Light (NIR) (e.g., 760-1,400nm, 850nm): Penetrates much deeper to reach muscles, tendons, ligaments, and joints. This is key for treating deep tissue injuries and chronic pain.

Key Benefits for Horses

Research and clinical use suggest several benefits of red light therapy for equine health:

• Accelerated Healing: Can reduce healing time for mild to moderate tendon lesions by up to 30%. It promotes collagen production, which is vital for repairing tendons and ligaments.
• Reduced Inflammation and Pain: Acts as a non-pharmacological anti-inflammatory agent, reducing swelling and pain in joints and soft tissues. It can help manage conditions like osteoarthritis.
• Improved Tissue Repair: Enhances blood flow and oxygen delivery to damaged areas, facilitating faster repair of muscles, tendons, and ligaments.
• Versatile Applications: Can be used for a wide range of issues, including:
  • Wound healing: For conditions like summer sores, scratches, and surgical incisions.
  • Musculoskeletal injuries: For back pain, muscle spasms, tendonitis, and joint issues.
  • Post-exercise recovery: To help performance horses recover faster and return to soundness.

Treatment Protocols

Treatment protocols vary based on the device, the condition, and its severity, but general guidelines exist:

General Tips for Treatment:

• Clean the Area: Light cannot penetrate through mud, sweat, or dirt. Thoroughly clean and dry the treatment area before starting.
• Maintain Correct Distance: Follow the manufacturer’s instructions, typically holding the device 1–3 cm away from the skin.
• Divide the Area: For larger areas, divide the treatment into overlapping zones to ensure even coverage.

Safety and Precautions

While generally safe, it is crucial to follow safety guidelines:

• Protect Eyes: Never shine the light directly into a horse’s (or human’s) eyes.
• Avoid Certain Areas: Do not use the therapy over known tumors or cancers, as it stimulates cell growth. Avoid the abdominal area of pregnant mares.
• Check for Damage: Do not use the device if it has any visual damage.
• Keep Dry: Ensure the horse is not wet when using the device to prevent damage.

Important Considerations

It’s important to note that while the benefits are promising, the scientific evidence supporting red light therapy in horses is still developing. Most experts recommend it as a complementary therapy to support, not replace, traditional veterinary care.