This may be a sign of early cataract or a change in your glasses prescription.
See an ophthalmologist.
Thanks for the suggestion. I met an opthalmologist , he said that there are some deposits in my eye.He suggested that this could be due to use of Heart-related medicines, which I am taking regularly for last several years. I am advised to apply an eye drop 'Flur(Flurbiprofen Sodium Opthalmic Solution USP). I am using it for about a week,but no result as yet. Look forward to your opinion. (