Pls advise on my vision problem. i have to enlarge or shine a light on letters or numbers for me to be ablse to see them, this is not a permanent condition, comes and goes?

Such fluctuating amblyopia warrants an examination by an ophthalmologist to check for glaucoma, optic nerve pathology,etc.

At your age you may be on the verge of needing reading glasses. The focusing ability naturally declines with age. At times the eyes may be able to focus, but at other times they are too fatigued. Bright light can help, as can reading glasses, but an eye examination would insure that the eyes are healthy and exactly what prescription you need.