BACKGROUND: In recent years, autologous serum has been increasingly used in the treatment of macular hole. The study carried out a biological analysis of autologous serum obtained by various methods. AIM: The aim of the investigation is to compare the cellular and biochemical composition of autologous serum obtained using different methods for use in the macular hole treatment. MATERIALS AND METHODS: The study of the number of platelets, leukocytes and fibrinogen level in the blood serum of 24 patients obtained by centrifugation in original systems for harvesting autologous serum and laboratory test tubes was performed. RESULTS: The indices of P-PRP obtained in the Arthrex ACP system and in a laboratory test tube do not statistically differ in quantitative indices of fibrinogen and platelets (p 0.05), and differ in the content of leukocytes (p 0.05) in the direction of increasing the number of leukocytes in the substrate obtained in a laboratory test tube. The indicators of L-PRP obtained in the Ycellbio-Kit system and in a laboratory test tube do not statistically differ in the amount of fibrinogen (p 0.05) and differ in the content of platelets and leukocytes (p 0.05) in the direction of decreasing the concentration of leukocytes and platelets in the autologous serum obtained in a laboratory test tube. CONCLUSIONS: Currently, autologous serum obtained in the Arthrex ACP system is of great interest for macular hole surgery due to the minimal content of leukocytes, the closed character of the system, and the best coagulation properties of the substrate obtained. Laboratory test tubes may be considered a more affordable alternative for the production of autologous serum (P-PRP) for the treatment of macular hole. The autologous serum (L-PRP) obtained in the Ycellbio-Kit system and in a laboratory test tube is less suitable for macular hole surgery according to its composition.

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Aim. To study the relationship of the characteristics of the preservation of the sensorineural retina and retinal pigment epithelium (RPE) obtained by optical coherence tomography (OCT) with functional recovery in the surgical treatment of full thickness macular hole (FTHM). Materials and methods. This study included 89 patients (95 eyes) with an average age of 67.2 ± 9.6 years, having complete postoperative anatomical closure of the FTMH. All patients underwent standard ophthalmological examination and OCT before surgical treatment. On cross-sectional and en face images, the area and reflexivity of the neurosensory retina tissue at the edges of the gap and the reflexivity of the RPE in the projection of the gap were evaluated. 12 months after surgical treatment, the correlation between the initial indicators of retinal tissue preservation and functional recovery was evaluated. Results. The final best-corrected visual acuity showed a statistically significant correlation with baseline best-corrected visual acuity (r = 0.75, p < 0.001), reflectivity of RPE (r = 0.91, p < 0.001), reflectivity of neurosensory retina (r = – 0.85, p < 0.001), and its area (r = 0.83, p < 0.001). Conclusion. Indicators of retinal tissue preservation, such as the area and reflexivity of the neurosensory retina tissue and the reflexivity of the RPE, correlate with functional recovery after FTMH surgery. Keywords: full-thickness macular hole, optical coherence tomography, optical coherence tomography angiography

Purpose. To study the relationship between baseline optical coherence tomography (OCT) characteristics of preservation of the neurosensory retina and retinal pigment epithelium (RPE) and functional outcome after full thickness macular hole (FTHM) surgery.Materials and methods. Patients with complete postoperative anatomical closure of the FTMH were included in this prospective interventional study. All patients received a standard ophthalmological examination and OCT before surgical treatment. At baseline the area and reflectivity of the neurosensory retina at the edges of the hole was measured on cross-sectional OCT scans. The reflectivity of RPE was evaluated within the hole on structural en face projections of RPE slab. Six months postoperatively, correlation between baseline OCT characteristics and visual outcome was evaluated.Results. Twenty-nine patients (30 eyes, 23 females and 6 males, average age — 66.2 ± 5.2 years) were included in the study. The final best-corrected visual acuity showed a statistically significant correlation with baseline best-corrected visual acuity (r = 0.75, p < 0.001), reflectivity of RPE (r = 0.81, p < 0.001), reflectivity of neurosensory retina (r = –0.88, p < 0.001), and its area (r = 0.41, p = 0.02).Conclusion. OCT-characteristics of retinal tissue preservation, including the area and reflectivity of the neurosensory retina and reflectivity of the RPE within the hole, correlate with functional recovery after FTMH surgery.