Background: Psoriasis is a chronic inflammatory skin disease with potential systemic involvement. Some evidence suggests an increased risk of dry eye in patients with psoriasis. However, the relationship between these two conditions remains unclear. The aim of our study is to investigate the association between psoriasis and dry eye disease. Methods: This meta-analysis was registered in PROSPERO (CRD42020199445) and adhered to MOOSE checklist and PRISMA guidance for all processes. PubMed, Embase, Web of Science, and Cochrane databases were searched for studies examining the association between psoriasis and dry eye disease from inception to December 13, 2020. The primary outcome was the prevalence of dry eye disease in patients with psoriasis relative to controls. The secondary outcomes were the Schirmer I test score, tear film breakup time (TBUT), and ocular surface disease index (OSDI). The risk of bias of the selected studies was assessed using the Newcastle-Ottawa Scale. Results: The meta-analysis showed a significant association between dry eye disease and psoriasis (OR, 8.49; 95% CI, 3.34–21.58). Moreover, patients with psoriasis had a significantly lower Schirmer I test score (MD, −2.80; 95% CI, −4.07 to −1.52), shorter TBUT (MD, −4.12; 95% CI, −5.22 to −3.02), and higher OSDI (MD, 20.15; 95% CI, 6.24–34.05; p < 0.01), compared to controls. Conclusions: The current evidence supports an association between dry eye disease and psoriasis. These results suggest ophthalmologic assessment for the early recognition and management of dry eye in patients with psoriasis.

Background: Psoriasis is a chronic inflammatory skin disease with potential systemic involvement. Some evidence suggests an increased risk of dry eye in patients with psoriasis. However, the relationship between these two conditions remains unclear. The aim of our study is to investigate the association between psoriasis and dry eye disease. Methods: This meta-analysis was registered in PROSPERO (CRD42020199445) and adhered to MOOSE checklist and PRISMA guidance for all processes. PubMed, Embase, Web of Science, and Cochrane databases were searched for studies examining the association between psoriasis and dry eye disease from inception to December 13, 2020. The primary outcome was the prevalence of dry eye disease in patients with psoriasis relative to controls. The secondary outcomes were the Schirmer I test score, tear film breakup time (TBUT), and ocular surface disease index (OSDI). The risk of bias of the selected studies was assessed using the Newcastle-Ottawa Scale. Results: The meta-analysis showed a significant association between dry eye disease and psoriasis (OR, 8.49; 95% CI, 3.34–21.58). Moreover, patients with psoriasis had a significantly lower Schirmer I test score (MD, −2.80; 95% CI, −4.07 to −1.52), shorter TBUT (MD, −4.12; 95% CI, −5.22 to −3.02), and higher OSDI (MD, 20.15; 95% CI, 6.24–34.05; p < 0.01), compared to controls. Conclusions: The current evidence supports an association between dry eye disease and psoriasis. These results suggest ophthalmologic assessment for the early recognition and management of dry eye in patients with psoriasis.

Background: Vitiligo is a skin depigmentation disorder that results from the autoimmune destruction of cutaneous melanocytes. Several ocular abnormalities, including uveitis, dry eye, glaucoma, and retinal diseases, have been reported in patients with vitiligo. The aim of our study was to investigate the association of ocular abnormalities with vitiligo. Methods: This meta-analysis was registered in PROSPERO (CRD42021224167) and adhered to MOOSE checklist and PRISMA guidance for all processes. PubMed, Embase, Web of Science, and Cochrane databases were searched for studies examining the association between ocular abnormalities and vitiligo from inception to December 10, 2020. Studies recruiting patients with Sjogren’s syndrome or Vogt-Koyanagi-Harada syndrome were excluded. The primary outcomes were the Schirmer test, tear film break-up time (TBUT), and ocular surface disease index (OSDI) of vitiligo patients compared to the controls. The risk of bias of the selected studies was assessed using the Newcastle-Ottawa Scale (NOS) of case-control studies. Results: This meta-analysis of 16 case-control studies showed that patients with vitiligo had significantly lower Schirmer test values (mean difference [MD], −1.65; 95% CI, −2.81 to −0.49), shorter TBUTs (MD, −4.66; 95% CI, −7.05 to −2.26), higher ocular surface disease indices (MD, 18.02; 95% CI, 5.7–30.35), and thinner subfoveal choroidal thicknesses (MD, −53.10; 95% CI, −69.84 to −36.36). No significant differences were found in the prevalence of glaucoma and the level of intraocular pressure. Conclusions: Our study supports an association between dry eye and thinner subfoveal choroidal thickness in patients with vitiligo. Dermatologists should be aware of these possible comorbidities and refer vitiligo patients with ocular symptoms to ophthalmologists for further management.

Background: Vitiligo is a skin depigmentation disorder that results from the autoimmune destruction of cutaneous melanocytes. Several ocular abnormalities, including uveitis, dry eye, glaucoma, and retinal diseases, have been reported in patients with vitiligo. The aim of our study was to investigate the association of ocular abnormalities with vitiligo. Methods: This meta-analysis was registered in PROSPERO (CRD42021224167) and adhered to MOOSE checklist and PRISMA guidance for all processes. PubMed, Embase, Web of Science, and Cochrane databases were searched for studies examining the association between ocular abnormalities and vitiligo from inception to December 10, 2020. Studies recruiting patients with Sjogren’s syndrome or Vogt-Koyanagi-Harada syndrome were excluded. The primary outcomes were the Schirmer test, tear film break-up time (TBUT), and ocular surface disease index (OSDI) of vitiligo patients compared to the controls. The risk of bias of the selected studies was assessed using the Newcastle-Ottawa Scale (NOS) of case-control studies. Results: This meta-analysis of 16 case-control studies showed that patients with vitiligo had significantly lower Schirmer test values (mean difference [MD], −1.65; 95% CI, −2.81 to −0.49), shorter TBUTs (MD, −4.66; 95% CI, −7.05 to −2.26), higher ocular surface disease indices (MD, 18.02; 95% CI, 5.7–30.35), and thinner subfoveal choroidal thicknesses (MD, −53.10; 95% CI, −69.84 to −36.36). No significant differences were found in the prevalence of glaucoma and the level of intraocular pressure. Conclusions: Our study supports an association between dry eye and thinner subfoveal choroidal thickness in patients with vitiligo. Dermatologists should be aware of these possible comorbidities and refer vitiligo patients with ocular symptoms to ophthalmologists for further management.