Thankyou for the advice. I have seen a consultant to check out the medical condition of the eye (I am only 37 so it seemed a wise precaution). So far after many tests there is nothing found.
I don't think that the opticians are incompetent in fact they seem very thorough. So far they haven't got it right.
I am hoping that somebody on this forum can provide some insight that I could go back to them with so that they can try something different. The fact that I can focus on a close up object and then switch to a distant one and see crystal clearly for a few seconds seems very important but I don't understand what it means. Maybe this could be created in a prescription if I could explain to the optician what direction he should take to copy yhe effect.
regards,
Neal
Hello Neal, Rather than think that you've seen several incompetent opticians or optometrists, I would suspect that there is something physically wrong with the eye. You're getting presbyopic so it's likely you're in your 40's. Things often start to go bad in the body in genral and in the eye in particular after 40.
You need to see a physician that specializes in the medical and surgical care of the eye (ophthalmologist). You may have cataracts starting, macular degeneration, blood vessel problems, corneal problems (eg keratoconus).
JCH III MD Diseases and Surgery of the Eyes.