Abstract
To investigate aqueous and lipid layers of the tear film as well as meibomian gland structure by meibography in psoriatic patients in the Iranian population. This case-control study was conducted on 31 psoriasis patients and 31 controls in Birjand University of Medical Sciences in 2018. The sampling method was available from the date of approval of the proposal in the Ethics Committee until it reached the sample size. After entering the study, patients were examined individually with a slit lamp. Then, Ocular Surface Disease Index (OSDI) score assessment, Schirmer test 1, lacrimal measurement with SM tube, tear break-up time (TBUT), and meibomian glands imaging by SBM Sistemi were done. Finally, the obtained data were entered into SPSS 15 software and analyzed at a significant level of less than 0.05. The two groups were matched according to age and gender (p = 0.39 and p = 0.80; respectively). With the exception of the SM Tube score, the mean of all tear film and meibomian glands functional and structural parameters including Schirmer test 1, TBUT, and meibography were significantly different between patients and control groups. Moreover, the proportion of abnormal OSDI (OSDI ⩾ 13) and the dry eye was significantly higher in psoriasis patients. Psoriasis is associated with dry eye as well as meibomian glands atrophy and dysfunction.
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