When I sit at a table and a person is looking straight at me, I do not see her face. So I peer past her with both eyes to see her head and at least roughly recognize her face. The finer features of a face are not recognizable to me at least, at this distance. This means that I can not use faces to recognise people.
Sometimes the little things became suddenly a challenge. For example, lighting a candle. The long thin ones are not a problem. But the short thick ones....
There are situations where I puzzle over a remark or behaviour of people around me. This is not surprising in itself, to Stargardtians this happens frequently and constantly. The solution to the puzzle is always that I lacked a visual cue, or I've simply not seen the triggering event.
For Stargardtiens faces are difficult to recognise. It is usually already a challenge to figure out if the person is looking at you or not. The distinguishing of facial expressions is only possible in particularly good light and only when the facial expressions are clear. This is an limiting factor when dealing with other people.