Stargardt's disease is a rare eye disease where the centre of the retina, the site of sharpest vision (macula), is affected. Since it typically manifests itself before age 20, one also speaks of a  juvenile macular degeneration.

Sometimes when I explain someone what Stargardt is and how I see with it, the reaction is :

- Amazing that you are so well adapted . One can't tell that you have it.

I then thank for the compliment, but think to myself that it's not quite so simple. Anyone watching me more closely  may notice that in addition to the direct signs ( such as when I unpack my magnifying glass to read the menu ) there are also many less obvious clues.