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Objectives. Optic nerve sheath fenestration (ONSF) is commonly used in idiopathic intracranial hypertension (IIH). Here we will present our experiences of ONSF in 26 patients with special attention to indications, surgical techniques and results Methods. The recorded data of patient management (with the result) who underwent ONSF were reviewed and studied retrospectively. Results. The total number of patients who underwent ONSF was 26. The male-female ratio was 1:12. Indications of ONSF were: 1. Idiopathic Intracranial Hypertension (IIH)-23 cases; 2. Cerebral Venous Sinus Thrombosis (CVST)-02 cases; 3. CNS Tuberculosis-01case. All patient underwent bilateral ONSF with post-operative continues lumbar CSF drain for 04 days. After fenestration gush of CSF came out with force in all-first operated eyes whereas 13-second operated eyes showed very little CSF flow after fenestration. Vision improved in different grades in all cases at discharge except in three cases. Preoperatively, visual acuity was either PL&PR or hand movement in 40 eyes where 04 eyes were preoperatively total blind (no PL&PR). Visual acuity improved in 48 eyes (92.3% eyes) where the patient can do his/her daily life activities including self-care. Improvement in IIH is 100% (23 cases i.e-46 eyes) whereas 01 case out of 02 cases in CVST. Though vision was improved dramatically fundal appearances changes very slowly and very less frequently returned to normal appearance. Conclusion. Due to the delicate and technically demanding nature of the surgery, safety is a major concern of the ONSF. Our experience showed ONSF is a technically safe operation with very good results where indicated.

Background: Depressive illness is present among Parkinson’s disease (PD) patients. Objective: The purpose of the present study was to see the influencing factors of development of depressive illness among Parkinson’s disease patients. Methodology: This comparative cross-sectional study was carried out in the Department of Neurology and Department of Psychiatry at Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh from July 2009 to June 2011 for a period of two (2) years. Parkinson’s disease patients who were attended at the movement disorder clinic and general OPD of Department of Neurology and in-patient department of Neurology at BSMMU, Dhaka were selected as study population. Patients with Parkinson’s plus syndrome, with dementia or other causes of parkinsonism like vascular or drug induced parkinsonism were excluded from this study. Data were collected by filling structured clinical questionnaire, then filling up of ‘structured clinical interview for DSM-IV Axis I disorders’ (SCID-CV) and self-reported ‘Depression scale` questionnaire. Parkinson disease was diagnosed by neurologist by the presence of two or more of the four cardinal criteria namely tremor, rigidity, bradykinesia and postural instability. Then patients were screened for depression by a psychiatrist of Department of Psychiatry at BSMMU, Dhaka. Result: A total of 100 Parkinson’s disease patients were interviewed and 80 patients ultimately participated in the study. The mean age of total Parkinson’s disease patients was 57.71±12.36 years ranging from 35 to 82 years with highest percentage (35%) had age group 65 years or above, 28.7% in 55 to 64 years, 22.5% in 45 to 54 years and lowest percentage (13.8%) in age group less than 45 years. Among 80 Parkinson’s disease patients, depression was present in 34 (42%) patients and was absent in 46 (58%) patients. Diabetes mellitus (p=0.125), hypertension (p=0.097), hypothyroidism (p=1.000), other illness (p=0.595), family history of PD (p=0.758) and levodopa use (p=0.661) were not significantly associated with the development of depressive illness in Parkinson’s disease. Conclusion: Diabetes mellitus (DM), hypertension (HTN), hypothyroidism, other illness, family history of PD and levodopa use do not significantly influence in the development of depressive illness among the Parkinson’s disease. Journal of National Institute of Neurosciences Bangladesh, 2019;5(2): 106-110