Cross-Sectional Study for an Ocular Imaging-Based Predictive Model of Inflammatory Skin Diseases Grounded in Traditional Chinese Medicine

Inclusion Criteria: For patients with inflammatory skin disease: Clinical diagnosis of one of the three target inflammatory skin diseases (psoriasis, atopic dermatitis, or urticaria). Age ≥ 18 and ≤ 65 years, any sex. Understands and signs informed consent. For healthy controls: Do not meet diagnostic criteria for any of the three inflammatory skin diseases above. Age ≥ 18 and ≤ 65 years, any sex. Understands and signs informed consent. Exclusion Criteria: For patients with inflammatory skin disease: Exclude any subject meeting any of the following: Refusal to undergo examinations. Presence of acute/active infectious ocular disease (e.g., viral keratoconjunctivitis). Corneal perforation or high-risk perforation where contact procedures cause severe photophobia, eye pain, inability to keep eyes open or fixate. Nystagmus or other conditions that prevent fixation. Pupillary non-dilation (e.g., posterior synechiae) that precludes fundus imaging. Severe eyelid lesions (e.g., marked swelling, ectropion, entropion) that prevent globe exposure. Participation in other clinical trials within the previous 3 months or concurrent participation in other interventional studies. * Healthy control - exclusion criteria Exclude any subject meeting any of the following: Presence of other skin diseases that could affect study assessments (e.g., atopic dermatitis, urticaria, scabies). Refusal to undergo examinations. Acute/active infectious ocular disease (e.g., viral keratoconjunctivitis). Corneal perforation or high-risk perforation that causes severe photophobia, eye pain, inability to keep eyes open or fixate during contact procedures. Nystagmus or other reasons preventing fixation. Pupillary non-dilation (e.g., posterior synechiae) that prevents fundus imaging. Participation in other clinical studies within the previous 3 months or currently participating in other clinical trials.