Macular Parameters Change during Silicon Oil Tamponade for Retinal Detachment Surgery.

Background and Objectives: To evaluate possible changes in macular thickness parameters during and after silicon oil tamponade and in pars plana rhegmatogenous retinal detachment surgery. Materials and Methods: Our retrospective study included 34 consecutive patients who underwent 23-gauge retinal detachment surgery with silicon oil tamponade. Central macular thickness (CMT), central macular volume cube (CMV) and average macular thickness cube (AVG) were measured by optical coherence tomography (OCT) before rhegmatogenous retinal detachment surgery with silicon oil tamponade during tamponade (seven days, one month and three months after surgery), and one month after silicon oil removal. Results: In our sample, macular parameters CMT, CMV and AVG in patients who underwent retinal detachment surgery were statistically reduced during silicon oil tamponade (p < 0.05). After silicon oil removal, all parameters recovered, reaching numeric values which were not statistically significant compared to preoperative values. The average span of silicon oil tamponade was 162 +/- 23 days. Conclusions: Silicon oil tamponade during 23-gauge rhegmatogenous retinal detachment surgery leads to a transitory reduction of central macular thickness, central macular volume cube and average macular thickness cube in eyes that underwent retinal surgery. After silicon oil removal, macular parameters returned to preoperative values in most of the patients.

Combined Treatment of Persistent Diabetic Macular Edema with Aflibercept and Triamcinolone Acetonide in Pseudophakic Eyes.

Background and Objectives: The main cause of the vision loss in diabetics is the development of diabetic macular edema, regardless of the stage of diabetic retinopathy. The paper aimed to examine whether the additional intravitreal application of triamcinolone acetonide to continuous anti-vascular endothelial growth factor therapy could improve therapeutic outcomes for pseudophakic eyes with persistent diabetic macular edema. Materials and Methods: twenty-four pseudophakic eyes with refractory diabetic macular edema, that had appeared despite three previously administered intravitreal injections of aflibercept, were divided into two groups (twelve eyes in each group). The first group continued to have aflibercept administered according to a fixed dosing regimen (once in two months). Triamcinolone acetonide 10 mg/0.1 mL (administered once per four months) was included for the second group, i.e., their treatment continued with a combination of aflibercept + triamcinolone acetonide. Results: The reduction in central macular thickness was higher in the eyes treated with combined therapy (aflibercept + triamcinolone acetonide) compared with the use of aflibercept alone during the entire 12-month follow-up period (3rd month p = 0.019; 6th month p = 0.023; 9th month p = 0.027; 12th month p = 0.031). As was evident from the p-values, the differences were statistically significant. No statistically significant difference was recorded for visual acuity: 3rd month p = 0.423; 6th month p = 0.392; 9th month p = 0.413; 12th month p = 0.418. Conclusions: Combined anti-vascular endothelial growth factor and steroid therapy leads to a better anatomical outcome of persistent diabetic macular edema in pseudophakic eyes, but does not lead to a more significant improvement in visual acuity than continuous anti-VEGF therapy alone.

Novel TEAD1 gene variant in a Serbian family with Sveinsson's chorioretinal atrophy.

Sveinsson's chorioretinal atrophy (SCRA) or helicoidal peripapillary chorioretinal degeneration (HPCD) as previously referred, is a rare ocular disease with autosomal dominant pattern of inheritance. The vast majority of reported cases were of Icelandic origin but the characteristic clinical picture of SCRA was also described in patients of non-Icelandic descent. Here, we report a novel disease-causing variant c.1261T>A, p.Tyr421Asn in TEAD1, detected in a Serbian family from Bosnia diagnosed with SCRA. The newly discovered change occurred at the same position as the "Icelandic mutation" (c.1261T>C, p.Tyr421His). According to our findings, this position in the exon 13 of the TEAD1 gene, at base pair 94, should be considered as a mutation hotspot and a starting point for future genetic analyses of patients with SCRA diagnosis.

Sex differences in macular thickness of the retina in patients with psychosis spectrum disorders.

INTRODUCTION: Imaging of retinal structure in psychosis spectrum disorders (PSD) is a novel approach to studying effect of this illness class on CNS structure. Studies of optical coherence tomography (OCT) have revealed significant reductions in regarding: retinal nerve fiber layer (RNFL), macular thickness (MT), ganglion cell-inner plexiform layer (GC-IPL) and macular volume (MV). Sex differences in retinal structure in PSD have not been previously explored. METHODS: This cross-sectional pilot study included 81 participant of age matched patients and controls. There were no differences between genders regarding illness duration and antipsychotic daily dose in the patient group. SD-OCT assessed RNFL, GC-IPL, MT, MV, and optic nerve cup-to-disc (C/D) ratio. In order to assess the main effects of illness, sex, and illness × sex interaction on the retinal parameters, general linear model was performed. RESULTS: Patients demonstrated abnormalities on all OCT indices. Effects of sex were observed for central subfield MT and C/D ratio, which were lower in females. An illness × sex interaction effect was observed for the left MT, indicating greater thinning in female patients. CONCLUSION: Sex differences in OCT findings in PSD appear to be most prominent considering macular parameters. These preliminary data may have important implications for the valid interpretation of OCT findings as potential biomarkers for PSD.

Cross-cultural validation of the Retinopathy Treatment Satisfaction Questionnaire status version (RetTSQs) in Serbian community: a cross-sectional study.

OBJECTIVE: Cross-cultural translation and validation of the Serbian version of the Retinopathy Treatment Satisfaction Questionnaire status version (RetTSQs). DESIGN: Cross-sectional study. SETTINGS: The study was conducted between June 2017 and June 2018 at tertiary care centre in Serbia, Belgrade. PARTICIPANTS: A total of 101 patients with diabetic retinopathy (DR) were included. All subjects were evaluated in two consecutive visits, the first during the initial contact to the clinic, while the second 4-6 weeks later. MAIN OUTCOME MEASURES: Validation of Serbian version of the RetTSQs was the major outcome. RESULTS: Cronbach alpha coefficient of the subscales ranged from 0.783 (positive scale) to 0.811 (negative scale) and for all domains it was excellent at α=0.829. The intraclass correlation coefficient was greater than 0.8 for all of the subscales. Univariable analyses revealed that age, gender, education, marital status and working status did not affect the RetTSQ scores, whereas participants with non-proliferative DR reported significantly higher treatment satisfaction (TS) than those with proliferative retinopathy (p=0.001). The group who received laser treatment scored significantly lower than the group without it (p=0.004) regardless of type of performed laser. Positive and statistically significant correlations were found between the RetTSQ score and most of the National Eye Institute Visual Functioning Questionnaire-25 subscales. CONCLUSION: Translated Serbian adaptation of the RetTSQs showed adequate psychometric characteristics as an acceptable, reliable and valid questionnaire. It was well understood by Serbian diabetic patients and it promises to be used in daily clinical work as an instrument for the assessment of TS for patients with DR.

Glutathione Transferase P1 Polymorphism Might Be a Risk Determinant in Heart Failure.

Disturbed redox balance in heart failure (HF) might contribute to impairment of cardiac function, by oxidative damage, or by regulation of cell signaling. The role of polymorphism in glutathione transferases (GSTs), involved both in antioxidant defense and in regulation of apoptotic signaling pathways in HF, has been proposed. We aimed to determine whether GST genotypes exhibit differential risk effects between coronary artery disease (CAD) and idiopathic dilated cardiomyopathy (IDC) in HF patients. GSTA1, GSTM1, GSTP1, and GSTT1 genotypes were determined in 194 HF patients (109 CAD, 85 IDC) and 274 age- and gender-matched controls. No significant association was found for GSTA1, GSTM1, and GSTT1 genotypes with HF occurrence due to either CAD or IDC. However, carriers of at least one variant GSTP1∗Val (rs1695) allele were at 1.7-fold increased HF risk than GSTP1∗Ile/Ile carriers (p = 0.031), which was higher when combined with the variant GSTA1∗B allele (OR = 2.2, p = 0.034). In HF patients stratified based on the underlying cause of disease, an even stronger association was observed in HF patients due to CAD, who were carriers of a combined GSTP1(rs1695)/GSTA1 "risk-associated" genotype (OR = 2.8, p = 0.033) or a combined GSTP1∗Ile/Val+Val/Val (rs1695)/GSTP1∗AlaVal+∗ValVal (rs1138272) genotype (OR = 2.1, p = 0.056). Moreover, these patients exhibited significantly decreased left ventricular end-systolic diameter compared to GSTA1∗AA/GSTP1∗IleIle carriers (p = 0.021). Higher values of ICAM-1 were found in carriers of the GSTP1∗IleVal+∗ValVal (rs1695) (p = 0.041) genotype, whereas higher TNFα was determined in carriers of the GSTP1∗AlaVal+∗ValVal genotype (rs1138272) (p = 0.041). In conclusion, GSTP1 polymorphic variants may determine individual susceptibility to oxidative stress, inflammation, and endothelial dysfunction in HF.

Anterior ischemic optic neuropathy associated with metabolic syndrome.

PURPOSE: Metabolic syndrome denotes a common cluster of naturally connected risk factors including obesity, elevated blood pressure, insulin resistance, dyslipidemia, proinflammatory state and prothrombotic state. Anterior ischemic optic neuropathy is an acute ischaemic disorder of the optic nerve head and may lead to severe visual loss. METHODS: We considered three patients with moderate degree of diabetic retinopathy and anterior ischemic optic neuropathy. They were submitted to endocrinological examination and the diagnosis of metabolic syndrome was established. RESULTS: Cardiological examination revealed that blood pressure control was not optimal. The signs of left ventricular hypertrophy and diastolic dysfunction were confirmed by echocardiography. They are possible markers of preclinical cardiovascular disease. CONCLUSION: We observed that a variety of well-known risk factors in metabolic syndrome may be involved in serious eye and cardiological complications. The early diagnosis and treatment of these patients can not only improve visual function but also prevent cardiovascular complications.

Terson's Syndrome - A Report of Two Cases.

INTRODUCTION: Vitreous or retinal hemorrhage occurring in association with subarachnoid hemorrhage is known as Terson's syndrome. In Terson's syndrome, intracranial hemorrhages are followed by intraocular hemorrhage, classically in the subhyaloid space, but may also include subretinal, retinal, preretinal, and vitreal collections. Vitreous hemorrhage recovery is usually spontaneous in six to 12 months, otherwise vitrectomy is considered. OUTLINE OF CASES: We report of two cases of Terson's syndrome. The.first was in a hypertensive middle-aged female, following anterior communicating artery aneurismal subarachnoid hemorrhage, after post-neurosurgical interventions.The second case report was of a young male who suffered from the bilateral vitreous hemorrhage after a severe traumatic brain injury. CONCLUSION: Terson's syndrome should be considered in patients who had previous cerebral hemorrhage and are referred to eye specialist because of loss of vision. However, this phenomenon has only rarely been described in association with subdural and epidural hematomas or traumatic subarachnoid hemorrhage.

Evaluation of Oxidative Stress Markers and Catecholamine Changes in Patients with Dilated Cardiomyopathy Before and After Cardiopulmonary Exercise Testing.

INTRODUCTION: The aim of this study was to evaluate oxidative stress markers (OSM) and catecholamine levels in patients with dilated cardiomyopathy (DCM) before and after cardiopulmonary exercise testing, and to investigate the association between changes in these markers and the New York Heart Association classification (NYHA) and left ventricular ejection fraction (LVEF) in these patients. METHODS: We evaluated 74 patients with DCM and 80 control subjects without DCM. Patients were grouped according to NYHA stages I/II or III/IV. Eligible participants were considered to be those with LVEF values <45%. The OSM analysed included superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), and glutathione peroxidase (GPX). The catecholamines analysed included adrenaline, noradrenaline, and dopamine. Vitamin C was also evaluated. All values were obtained before and after cardiopulmonary exercise testing. RESULTS: There was a significant increase in GR, adrenaline, and noradrenaline after testing in the DCM patients. A significant difference between controls and patients in CAT and evaluated catecholamines was observed after testing. A significant increase in GR, GPX, adrenaline, and noradrenaline for patients in NYHA I/ II, and in CAT, GR, adrenaline, noradrenaline, and dopamine for patients in NYHA III/IV, was found between the different times of observation. LVEF before testing showed a significant positive correlation with GPX, and a negative correlation with noradrenaline and adrenaline. After testing a significant negative correlation was found with SOD and GR. CONCLUSIONS: The results of our study demonstrate the complexity of the neurohumoral mechanisms and physiological alterations in the failing heart in DCM patients. Further studies are needed, including other biomarkers and larger samples of patients, in order to improve our understanding of the aetiopathogenesis of DCM development and progression.

Correlation of atherogenic risk factors with retinal artery occlusion in adults.

AIM: To evaluate correlation of atherogenic risk factors between patients with retinal artery occlusion (RAO) and matched population, including those with central RAO and branch RAO. METHODS: Seventy-two participants from 2 groups were evaluated: a group with diagnosed RAO (first group; 45 participants) and a matched control group including those without RAO or any other ophthalmological disease (second group; 27 participants). From those with diagnosed RAO patients with central RAO and patients with branch RAO were evaluated separately. Additional parameters that were observed included body mass index (BMI), blood pressure, fasting glucose levels, triglycerides, LDL and HDL cholesterol fractions levels, presence of metabolic syndrome and hyperlipoproteinemia. RESULTS: There was a significant increase of LDL mean values in the group of patients with RAO. Hypertension (88.9%), hyperlipoproteinemia (68.9%) and metabolic syndrome (53.3%) were significantly more frequent in patients with RAO, while gender and diabetes mellitus were not in direct correlation with the development of RAO. The group of patients with RAO had no significantly higher values of BMI compared to the control. High density lipoprotein fraction was significantly higher in the group of patients with central RAO as compared with those with branch RAO. CONCLUSION: Patients with atherogenic risk factors are more prone to the development of RAO. Furthermore, we demonstrated that HDL had more protective effects on smaller blood vessels (branch retinal artery) than on larger blood vessels (central retinal artery).

C-reactive protein and chitinase 3-like protein 1 as biomarkers of spatial redistribution of retinal blood vessels on digital retinal photography in patients with diabetic retinopathy.

The aim of the study was to investigate the correlation between the levels of C-reactive protein (CRP) and chitinase 3-like protein 1 (YKL-40) in blood samples with morpohometric parameters of retinal blood vessels in patients with diabetic retinopathy. Blood laboratory examination of 90 patients included the measurement of glycemia, HbA1C, total cholesterol, LDL-C, HDL-C, triglycerides and CRP. Levels of YKL-40 were detected and measured in serum by ELISA (Micro VueYKL-40 EIA Kit, Quidel Corporation, San Diego, USA). YKL-40 correlated positively with diameter and negatively with number of retinal blood vessels. The average number of the blood vessels per retinal zone was significantly higher in the group of patients with mild non-proliferative diabetic retinopathy than in the group with severe form in the optic disc and all five retinal zones. The average outer diameter of the evaluated retinal zones and optic disc vessels was significantly higher in the group with severe compared to the group with mild diabetic retinopathy. Morphological analysis of the retinal vessels on digital fundus photography and correlation with YKL-40 may be valuable for the follow-up of diabetic retinopathy.

Duane type I retraction syndrome associated with Wyburn-Mason syndrome.

PURPOSE: Our aim is to report the co-existence of Duane's retraction syndrome and Wyburn-Mason syndrome, a rare condition characterized by arteriovenous malformations (AVMs) in the central nervous system and retina. METHODS: An 11-year-old boy was referred for evaluation of strabismus present since birth. On examination his uncorrected visual acuity was 6/6 in each eye, with small angle left eye esotropia in the primary position, ipsilateral face turn, abduction deficit, lid fissure narrowing in adduction and widening in abduction; plus typical features of left-sided type I Duane syndrome were present. The left fundus demonstrated localized, well-compensated, markedly convoluted, dilated and tortuous retinal vessels and venous congenital retinal macrovessel, which traverse the macular region. The right fundus was unremarkable. In order to elucidate if this retinal vascular malformation is associated with similar lesions in the orbit, paranasal sinuses and/or brain, magnetic resonance imaging (MRI) was performed, followed by digital subtraction angiography of the brain vessels. RESULTS: Clinical features of retinal disease (typical retinal vascular malformation) and brain imaging studies have led to the diagnosis of Wyburn-Mason syndrome. Digital subtraction angiography of the brain revealed an AVM of 30 mm maximal diameter in the left occipital lobe. CONCLUSIONS: Intracranial AVM might have affected the normal vascular development during the second month of gestation, causing involutional changes of the sixth nerve and resulted in Duane's syndrome by "steal phenomenon." Retinal AVM may point to concomitant intracranial AVMs, thus warranting neurological assessment. Patients with AVM of the retina should be examined early with brain and orbital neuroimaging to rule out cerebral AVMs.

Ocular pulse amplitude in patients with thyroid-associated ophthalmopathy.

PURPOSE: To determine ocular pulse volume values in patients with thyroid-associated ophthalmopathy with normal intraocular pressure, and to test the hypothesis that changes in orbital tissue that accompany thyroid-associated ophthalmopathy can in turn give changes in choroidal perfusion.
 METHODS: In a prospective study, we evaluated 30 eyes of 30 consecutive patients with TAO, and 30 eyes of 30 healthy subjects. Complete ophthalmologic examination including dynamic contour tonometry was done. Possible differences in ocular parameters between the tested groups were assessed.
 RESULTS: . No significant difference was found in ocular pulse volume values between the tested subjects (paired test p=0.23).
 CONCLUSIONS: . The orbit tissue changes that are involved in thyroid-associated ophthalmopathy do not have much implication on choroidal perfusion, at least when intraocular pressure values remain within the normal range.

Influence of intravitreal injection of bevacizumab on systemic blood pressure changes in patients with exudative form of age-related macular degeneration.

INTRODUCTION: The aim of our study was to examine blood pressure (BP) changes in hypertensive and nonhypertensive patients after intravitreal bevacizumab injections and to assess whether intravitreal bevacizumab carries an associated vascular risk in patients with exudative ocular disease. We also aimed to estimate the influence of gender. METHODS: The study included 57 patients with age-related macular degeneration who received an intravitreal injection of 1.25 mg (0.1 mL) of bevacizumab. We analyzed systolic and diastolic BP values separately. Patients were divided into males and females, and into hypertensives and normotensives based on their BP values. BP was measured before bevacizumab administration, and 10 minutes, 1 hour, 2 days, 7 days and 6 weeks after the injection. RESULTS: Males had a statistically significant decline in systolic BP values 1 hour and 6 weeks after drug administration (p<0.05). The most notable significant decline in diastolic BP values was for males and for normotensive participants 1 hour after drug administration (p<0.05), while the most notable decline in diastolic BP values for females and for hypertensive participants was 7 days after drug administration, with statistical significance only for hypertensive patients (p<0.01). For males it was noticed that a statistically significant decline in diastolic BP persisted after 6 weeks (p<0.05). CONCLUSIONS: An intravitreal bevacizumab injection is safe as regards BP changes over 6 weeks post administration. Regular follow up for 6 weeks should be mandatory in order to promptly recognize individuals who have changes in BP values and include them in BP treatment in order to prevent complications.

Idiopathic polypoidal choroidal vasculopathy.

BACKGROUND: Idiopathic polypoidal choroidal vasculopathy (IPCV) is uncommon condition. It is considered to be a variant of neovascular age-related macular degeneration, but it can be also found in younger patients. CASE REPORT: We presented a case of otherwise healthy, 36-year-old women, with sudden unilateral visual impairment in the left eye and metamorphosia. Slit lamp biomicroscopy examination of the eye anterior segment was normal. Intraocular pressure determined by aplanation tonometry was 16 mmHg in both eyes. Indirect slit lamp biomicroscopy examination showed signs of serosanquinous detachments of the retinal pigment epithelium. Fluorescein angiography showed a subretinal vessel network through the pigment epithelial atrophy with hyperfluorescence in superior part of serohemorrhagic pigment epithelial detachment and the inferior hypofluorescence, caused by hemorrhage. Optical coherence tomography proved detachment of the retinal pigment epithelium. CONCLUSION: In patients with IPCV a mild, natural course with spontaneous resorption of exudations and hemorrhage and improvement in visual acuity can be observed. There is no approved treatment at present.

[Evaluation of body mass index and lipid fractions levels in patients with retinal artery occlusion].

BACKGROUND/AIM: There are studies stressing out that atherosclerosis is most common associated systemic condition in patients with retinal artery occlusion. The aim of this study was to analyze values of body mass index and lipid fractions in healthy individuals and patients with retinal artery occlusion. METHODS: This study included 90 participants during a 6-year period. The population was divided into 2 groups: the group with the diagnosed retinal artery occlusion and the group without retinal artery occlusion. The observed parameters were as follows: body mass index, low and high density lipoproteins and triglycerides. RESULTS: The study revealed no significant difference regarding body mass index and triglycerides values between the two evaluated groups, while low and high density lipoproteins values were significantly higher in the group of patients with retinal artery occlusion. CONCLUSIONS: The study demonstrated that body mass index and triglycerides have less important role in atherogenic pathogenesis of retinal artery occlusion, while low density lipoprotein is the fraction that is shown to be most potent in such etiological processes.

Anthropometric and lipid parameters trends in school children: one decade of YUSAD Study.

INTRODUCTION: Athersclerosis is a multifactorial disease that begins in childhood. There are few reports regarding influence of risk factors on the atherosclerotic processes in early period of life and adolescence. OBJECTIVE: The aim of this study was to present and analyze risk factor trends in school children over a 10-year period that were included and followed-up by the Yugoslav Study of Atherosclerosis Precursors in School Children (YUSAD Study). METHODS: There were three examinations of selected population from 13 centres. The first examination was performed when children were 10 years of age (first group; N = 6381 participants), the second examination on the same population when they were 15 years of age (second group; N = 5017) and third when children were 19/20 years of age (third group; N = 1293). Evaluated parameters included: BMI, waist circumference (WaC) and lipid profile (total cholesterol, HDL cholesterol, LDL cholesterol and triglyceride). RESULTS: A significant elevation of values (p < 0.001) of BMI, WaC and triglycerides and a significant decline (p < 0.001) of total cholesterol and LDL cholesterol in boys over 5 and 10-year period was noticed. There was a significant elevation (p < 0.001) of BMI, WaC and HDL values and a significant decline in LDL cholesterol values in girls over the 5 and 10-year period. CONCLUSION: Our results point out that girls between 10 and 19/20 years have a better lipid profile during growth. It should be stressed out that childhood and adolescence can be more beneficial in the observation of risk factor influences on pathological, genetic and clinical levels.

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. All of these conditions can be unilateral or bilateral. Children who have unilateral optic disc abnormalities generally present during the preschool years with sensory esotropia. Visual acuity may be unaffected like in optic disc pit, optic disc drusen, fibre medullares, ect. However, during the evolution they may cause a decrease in visual acuity like serous retinal detachment in optic disc pit, atrophy or subretinal neovascularisation in optic disc drusen. Some of them like fibre medullares needs only a good diagnose and they do not have any evolution. Fluorescein angiography and ultrasonography may be crucial diagnostic procedures to discover some of them, like optic disc drusen. Optic disc abnormalities may be associated with other congenital disorders of the eye and often central nervous system malformations. Secondary they may be associated retinal detachment, retinochisis, macular edema, choroid neovascularisation and lipid exudation. Some of these conditions may be found on routine ophthalmologic exam such as optic disc drusen and fibre medullares and often are diagnostically problem. The aim of our study was to present some of our cases with different optic disc abnormalities such as fibre medullares, optic disc coloboma, hypoplasio disc, optic disc drusen and optic disc pit.

Physical activity evaluation in Yugoslav Study of the Precursors of Atherosclerosis in School Children - YUSAD study.

INTRODUCTION: It is observed that there is a lack of physical activity and exercise in children, stressing higher prevalence of childhood obesity. The purpose of the study was to evaluate duration of physical activity in a child population and correlation of dynamics in physical activity during 5 years of follow-up in the same population. MATERIAL AND METHODS: We evaluated 3243 school children from 12 regional centres across Serbia. The first examination was done when the children were 10 years old (baseline group), while the second examination was done on the same population when children were 15 years old. Physical activity was classified as recreational activity after school. We analysed 3 groups regarding physical activity: a group of children who were physically active less than 1 hour per day (group I), a second group active from 1 hour to < 3 hours per day (group II), and a third group active ≥ 3 hours per day (group III). RESULTS: In our study we have found on examination that the majority of children were physically active between 1 and 3 hours per day. Our results indicate that there is significant movement from groups I and III toward group II on the second examination regarding the proportion in the baseline group. There is a significant increase in the number of children in group I as they get older. CONCLUSIONS: School children in Serbia are physically active predominantly between 1 and 3 hours per day at the age between 10 and 15 years.