weird results measuring OG with refractometer

[Edak]

Could it be your sample is evaporating a little and hence concentrating the sugars on the refractometer?

this...

 

[BobtheBrewer]

I often get my missus to check refractometer readings. Because she doesn't understand the necessary sensitivity of the reading, she spends ages getting it down to 1.XXXX for me. My left eye vision is ok, but I feel just as ******** using it in isolation as I do using my left arm to throw a ball. I hope things go well in relation to getting the cataracts sorted. My issue is a severe astigmatism (around 5% vision), which has no cure.

Thanks mate. Haven't been here lately so didn't see your post. Maybe some hope for you in the future, they are doing some wonderful things these days.