Outcome measures (tear break-up time, tear film osmolarity, meibomian gland assessment, number of meibomian glands yielding liquid secretion in lower eyelid , meibography, self-assessed symptoms and close up photos of the lid margins) will be measured at baseline. All subjects will receive 4 treatments at 2 weeks intervals. In each treatment session, a subject allocated to the study group will be treated with IPL administered in the malar region, from tragus to tragus including the nose, 2-3 mm below the lower eyelids. Immediately following the IPL administration, the meibomian glands will be manually expressed from both eyelids. Subjects in the control arm will receive exactly the same treatment, except that the IPL administration will be sham. A single follow-up will occur at 10 weeks after the baseline (or 4 weeks after the 4th treatment session). At the follow-up, the changes in the outcome measures will be evaluated, and compared between the two arms.