Thanks for your question on Health Care Magic. I can understand your concern. Your ecg (electro cardio gram) is suggestive of left bundle branch block. There are two conduction systems in heart by which pulse is generated and heart beats. One is right bundle branch and other is left bundle branch. Left one supplies left side of heart which is main part of heart which supplies blood to whole body. So any conduction defect in this part will cause reduced blood supply to body organs like brain, eyes, lungs, liver, kidneys etc. So your symptom of sight inturption is due to reduced blood supply to eyes. So you should immediately consult cardiologist and start treatment. You may need pacemaker insertion. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.