Efficacy of Adjunctive Low-Level Light Therapy to Intense Pulsed Light for Meibomian Gland Dysfunction

LLLT therapy will be delivered using the Light Modulation® special facial mask (Espansione Marketing S.p.A., Bologna, Italy) which will be placed on the participant's face for 15 minutes. The mask has the shape of a half-face and will emit a red light in an LED system. The device has an emission power of 100 The mask has the shape of a half-face and will emit a red light in a light-emitting diode (LED) system. The device has an emission power of 100 milliwatts per square centimeter.

The IPL therapy will be performed using the Eye-light® with Optimal Power Energy® (Espansione Marketing S.p.A., Bologna, Italy), which emits the light at a wavelength of 600 nm IPL system with fluence ranging from 10 to 16 J/cm2 per eye depending on the Fitzpatrick skin scale. During IPL treatment 5 flashes of light will be applied to the skin around the eye using a handheld device; 3 along the inferior orbital rim, 1 at the lateral canthus, and 1 applied horizontally along the inferior orbital rim