Participants will receive a session of IPL therapy followed by LLLT therapy, once weekly for 4 weeks (total 4 treatment sessions). 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. The 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 a light-emitting diode (LED) system.

The IPL alone group will receive only a session of IPL therapy, once weekly for 4 weeks (total 4 treatment sessions). 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, similar to the combined group. Additionally, the special facial mask will also be placed on the participant's face for 15 minutes with no light power applied.

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.

Lipid layer thickness will be evaluated using Lipiview® II interferometer (TearScience®, Johnson & Johnson Vision, California, USA). The thickness of the lipid layer is then calculated from the interference pattern and expressed in interferometric color units (ICU), where 1 ICU reflects approximately 1 nm of lipid layer thickness.

Meibum quality grade will be evaluated on central 8 glands at the lower lid with grade 0 indicating clear meibum, 1 indicating cloudy meibum, 2 indicating cloudy particulate meibum, and 3 indicating inspissated, like toothpaste meibum.