Objective: The objective of the study was to compare cytokine levels in the vitreous body of patients with proliferative diabetic retinopathy (PDR) undergoing posterior vitrectomy. Patients and methods: The study included 39 patients (39 eyes) undergoing pars plana vitrectomy (PPV). Patients were divided into three groups: patients with proliferative diabetic retinopathy (PDR) without aflibercept injection prior to the surgery, PDR patients administered aflibercept injection prior to the surgery, and patients without diabetes mellitus (control group). All patients underwent a comprehensive eye examination one day before and 3 weeks after the surgery, including measurements of: best-corrected visual acuity (BVCA) and intraocular pressure (IOP), slit-lamp examination and spectral domain optical coherence tomography (SOCT). Concentrations of cytokines: IL-6, IL-8, IL-12p70, TNF, IL-10, IL-1β were measured in the vitreous body of patients with BD™ Cytometric Bead Array (CBA) Human Inflammatory Cytokines Kit. Results: PDR patients who received pretreatment with aflibercept injection showed significantly lower concentrations of IL-12p70, TNF, IL-10 and IL-1β in the vitreous body compared to the control group. Meanwhile, patients without prior aflibercept injection had a significantly higher concentration of IL-8. There was also a significant positive correlation between IOP before PPV and IL-8 concentration in both PDR patients’ groups. Conclusion: Findings of our study suggest an important role of IL-8 in the development of severe PDR. Aflibercept administration on the day before elective vitrectomy facilitated the surgery.

A pilot study of a 10-year analysis of the eyesight characteristics in patients after renal transplantation with a view to a later wider study of the same population.The study encompassed 50 eyes in 25 patients who underwent renal transplantation in the years 2007 and 2008. All patients underwent: visual acuity measurement, tonometry, slit lamp examination, and spectroscopic optical coherence tomography.Changes in the eyes observed during the 10-year observation period included mostly: cataract (48%), hypertensive angiopathy (28%), diabetic macular edema (16%), and glaucoma (16%). Ten years after the renal transplant visual acuity declined in 15 patients (60%). In 67% of those with eyesight deterioration the cause was cataract, while in patients with no changes in the eyesight (n = 10) cataract was diagnosed only in one. Patients with cataracts had been more often treated with cyclosporine, and that difference was statistically significant (73% vs 21%; P < .05). Comparing patients with hypertensive angiopathy with controls has shown that in the first group creatinine levels were statistically significantly higher (1.6 vs 1.16 mg/dL; P < .05). Patients with angiopathy had been also longer on renal replacement therapy before transplant (57 vs 26 months, P > .05), and this group included also statistically more persons after retransplantation (43% vs 5%, P < .05).Most frequent ophthalmological diagnoses in patients after a kidney transplant include cataract, diabetic retinopathy, and hypertensive angiopathy. Visual acuity deterioration was seen in 60% of patients and was mainly the effect of cataract progress. The effect of cyclosporine on cataract progress was significant. The diagnosis of hypertensive angiopathy corresponded with poorer function of the transplanted kidney.

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