The Projection Clock is a fantastic idea and has all the features necessary but the main feature is poorly designed. The time projected is small but fairly clear and bright enough to read with no trouble at all for us. I've had Lasik so I can't say how hard it might be with poor eyesight. Alarm features are great. The only thing I don't like about the clock is that the projection arm on the clock only adjusts one way, front to back, not side to side, so that means that the entire clock has to be turned to an angle that you might not ever turn a clock, depending on where the furniture sits that you were going to put it on. I sit mine on a bedside table and in order to have the time projected on the ceiling in the direction where we can read it while in bed, the clock is actually turned away from the bed which makes no sense at all and looks completely out of place. If my bedside table were at at odd angle, that would be one thing but it's not. Anyway, if it were a completely adjustable projection arm, you would have complete control where the clock would sit and where the time would be displayed. Big engineering mistake. But since we wanted the clock for the time to be projected on the ceiling, we can live with the fact that we can't look at the actual clock unit!