Go to...
Preferences -> Visualization -> View/Screen
...and select the 'Calibrate' button in the middle of the dialog page. Now using a combination of the horizontal and vertical sliders, increase the size of the inscribed-circle symbol, which after selecting OK will force ALL non-geometric graphic objects, such as Cone-Heads, CSYS's, Text, Splats ('*'), and of course POINTS, to increase their displayed screen size.