COVID-19 caused hearing loss.

Purpose: The objective of this cross-sectional study was to determine if there is a potential link between COVID-19 infection and hearing loss.

Methods: The prospective study was conducted in the COVID Hospital Clinical Centre Niš, Serbia. We performed tonal audiometry and used a custom questionnaire and medical histories to determine the incidence of hearing loss in COVID-19 positive patients.

The efficacy of novel therapeutic modalities of isolated ocular vasculitis vs ocular vasculitis as a systemic disease.

Aim: To evaluate the efficacy of new therapeutic modalities with the observation period of three years on patients with isolated ocular vasculitis in comparison with ocular vasculitis as a systemic disease.

Methods: The effectiveness of the therapy was assessed based on the changes in visual acuity and degree of ocular inflammation (mild, medium, moderate, severe) with the following parameters: vitreous body cloudiness, blood vessels layering, macula oedema, blood vessels occlusion and new vascularisation

Results: New therapeutic modalities resulted in reduction in the number of patients with severe inflammation in the group of isolated ocular vasculitis from 8(13.5%) to 7(12.

Oxidative stress in cataractogenesis.

The aim of our study was to compare levels of antioxidative agent -total SH groups and the final product of lipid peroxidation- malondialdehyde (MDA) in serum, and glutathione (GSH) and MDA in nucleocortical parts of lens after extracapsular extraction of cataract. Patient were (38 with cataract and 38 controls) matched by sex and years of life. Diagnosis of cataract was established by complete ocular examination.

Optic disc abnormalities - diagnosis, evolution and influence on visual acuity.

Congenital abnormalities of the optic disc are not so rare. The etiology for the most of them is unknown. Visual acuity of affected eye may be minimally or severely affected, depending on the extent of lesion.

Sentinel node biopsy for skin melanoma.

Background/aim: Skin melanoma is one of the most malignant diseases with increasing incidence rate. Sentinel node biopsy (SNB) is very important for early detection of metastatic spread. The aim of the study was to analyze the first 40 patients with skin melanoma of 1 to 4 mm Breslow thickness when SNB was indicated.