Volume : IX, Issue : VI, June - 2019

STUDY OF CHANGES IN VISUAL EVOKED POTENTIAL AMONG SMOKERS AND NON SMOKERS

Rashmi Dave, Chhaya Batham, Asha Shrivastava

Abstract :

Background & Objectives: Present study was aimed to assess Visual Evoked Potential (VEP) abnormalities in smokers and to correlate the changes with pack years. Methods: Study comprised of 40 smokers and 40 non smokers (30–50 years) with no complaint of visual impairment. Quantum of smoking was calculated by using smoking pack years. VEP was recorded using RMS EMG MKII. Latency and amplitude of P100 wave were analysed. Significant abnormality was defined as variations beyond mean ± 3SD from healthy adults. Results: Observations revealed significantly prolonged P100 latency and decreased P100 amplitude bilaterally in smokers compared with non–smokers suggestive of axonal loss and demyelination. No significant correlation between P100 amplitude and P100 latency with pack years could be established. Interpretation & conclusion: Observations suggest that hypoxia in long term smokers is known to effect functional integrity of visual pathway implicating changes in VEP parameters

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

STUDY OF CHANGES IN VISUAL EVOKED POTENTIAL AMONG SMOKERS AND NON SMOKERS, Rashmi Dave, Chhaya Batham, Asha Shrivastava INDIAN JOURNAL OF APPLIED RESEARCH : Volume-9 | Issue-6 | June-2019

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