Hyderabad: It is common knowledge that blood pressure is associated with heart ailments. But, do you know that it also causes sudden and irreversible vision loss? Yes, you read it right! Blood pressure, if left unchecked, can cause sudden vision loss, which is an ophthalmic emergency just like a heart emergency, causing complete loss of vision. Known as Retinal Artery Occlusion (RAO), patients suffering from this medical condition have to be rushed to an eye hospital within 4 hours, for a c