Eye nightmare

I read in the paper (so it's true) that there is now an imaging device called Optos which can be used to map the eye and show any problems. It sounded like all my dreams had come true and I won't have to have anyone actually touch my eye. But then I found a hair-raising account of a journalist who tried out the imaging and they saw a potential problem. So she had to come back the next day and they used the probe (which I refused from my optician). And it is indeed a rod which is pushed hard against the eye. And then they did not find anything so she had all the anxiety for nothing. I feel physically sick.