AIM: To analyze personalized therapy for dry eye syndrome (DES) in children, depending on the etiopathogenesis and severity of the disease.
 MATERIAL AND METHODS: In total, 187 children aged 3–17 years with DES were treated. Ophthalmic medicines registered in Russia from the group of local rehydrants replacing tear fluid and stabilizing tear film were used, and a comparative analysis of their effectiveness was carried out.
 RESULTS: An individual approach was implemented, and personalized therapy focused on the individual tolerability and effectiveness of medicines was developed. The principle of DES therapy is to replenish the lacrimal fluid deficiency and stabilize all layers of the tear film, considering the etiopathogenesis and severity of clinical symptoms. At this stage, the lipid layer of the tear film was normalized with the help of hypotonic oil-based preparations that can stabilize the lipid layer. All rehydrants of low, medium, and high viscosities contributed to the restoration of the water layer of the joint venture. The deficiency of the mucin layer of the tear film was compensated by hyaluronic acid and carboxymethylcellulose, which are part of the preparations that replace the tear film. The severity of DES associated with the intensity of the clinical changes in the conjunctiva and cornea was considered when designing the DES treatment regimen in children. In cases of mild and extremely severe severity, tear-replacement medicines of low viscosity showed the greatest therapeutic effectiveness. High-viscosity preparations and gels have been proven to be effective in moderate to severe DES. During the desquamation of the conjunctival and corneal epithelium, medicines with regenerating pharmacological action related to tissue repair simulators were included in the treatment regimen. Reparants included in the combined composition of tear-replacement medicines or monopreparations were used.
 CONCLUSION: The effectiveness of the DES treatment algorithm in children with various nosologies and features of etiopathogenesis was analyzed considering disease severity. The proposed schemes of personalized tear-replacement and reparative therapy make it possible to prevent a chronic disease course and occurrence of complications and preserve or restore visual acuity.