In Electro-Optical Synergy (ELOS) technology, the optical component functions primarily as a thermal guide. Specifically, a 915nm diode laser is used to preheat the target skin tissue before the main energy is delivered. This initial warming significantly lowers the electrical impedance (resistance) of the tissue, creating a highly conductive channel. Consequently, the subsequent bipolar radiofrequency (RF) energy naturally follows this path of least resistance, concentrating its power precisely on the preheated area for effective treatment.
Core Takeaway The optical component in ELOS does not act alone; its role is to lower the skin's resistance to electricity via heat. This "primes" the target area, ensuring that the radiofrequency energy is guided accurately to the scar tissue rather than dispersing into the surrounding healthy skin.
The Mechanics of Synergy
Preheating the Target Zone
The process begins with the optical component, typically a 915nm diode laser.
Its specific job is to direct light energy into the atrophic scar tissue.
This light energy is absorbed and converted into heat, raising the temperature of the specific target area without causing widespread damage.
Reducing Electrical Impedance
Biological tissue changes its electrical properties when heated.
As the laser warms the target tissue, the tissue's electrical impedance—its resistance to the flow of electricity—decreases.
This creates a distinct difference between the warmed target tissue and the cooler surrounding skin.
Creating a Preferred Path
Electricity always follows the path of least resistance.
Because the laser has lowered the impedance of the scar tissue, the system establishes a "preferred path."
When the bipolar radiofrequency (RF) energy is deployed, it is naturally drawn to this preheated zone.
Selective Thermal Damage
The ultimate goal of this synergy is precise, selective thermal damage.
By guiding the RF energy via the optical preheating, the system delivers the necessary heat to stimulate remodeling in the scar tissue.
This allows for effective treatment while minimizing the energy load on non-targeted areas.
Understanding the Trade-offs
Complexity vs. Efficacy
The ELOS approach adds a layer of complexity compared to single-energy treatments.
It relies on the precise synchronization of light and electric energy.
However, the trade-off yields higher specificity, allowing for deeper penetration with potentially fewer side effects than using high-intensity RF alone.
Thermal vs. Mechanical
It is important to distinguish this from mechanical treatments like microneedling.
While mechanical devices (as noted in general practice) use physical trauma to induce collagen, ELOS relies on thermal stimulation.
This means ELOS addresses the scar through heat-induced remodeling rather than physical puncture.
Making the Right Choice for Your Goal
When evaluating ELOS technology for acne scar treatment, consider how its mechanism aligns with your clinical objectives.
- If your primary focus is Precision: This technology is ideal because the optical component acts as a targeting system, ensuring energy is focused strictly on the scar tissue.
- If your primary focus is Safety: The synergy allows for lower overall energy levels to achieve the same result, as the "preferred path" prevents energy from scattering into healthy tissue.
By using light to guide electricity, ELOS transforms a standard energy treatment into a targeted surgical tool.
Summary Table:
| Feature | Role in ELOS Technology | Benefit for Atrophic Scars |
|---|---|---|
| 915nm Diode Laser | Preheats target tissue | Lowers electrical impedance (resistance) |
| Bipolar RF Energy | Delivers deep thermal energy | Stimulates collagen remodeling in scars |
| Synergy Mechanism | Creates a "preferred path" | Minimizes energy dispersion to healthy skin |
| Treatment Goal | Selective thermal damage | Precise, safe, and effective scar reduction |
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References
- F. Cherif, I. Zarâa. Electro-optical synergy (ELOS) technology for combined acne scars treatment – A case report. DOI: 10.1016/j.mla.2010.09.002
This article is also based on technical information from Belislaser Knowledge Base .
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