Headcanon: While Miraluka are more or less aware of everything in their surroundings, they can 'focus' on certain things or people. And given the nature of their sight, powerful Force-sensitive people can feel their 'gaze'.
Just like how sighted people can look at a landscape in general, or look specifically at a single tree in that landscape, so can Miraluka focus their Force-sight so that they're 'looking' at a certain thing while still being aware of their surroundings.
Since this is a Force ability, most people can't feel that focus if it is turned on them, but those with a deep connection to the Force (and other Miraluka) can. The feeling varies by individual, but most often a Miraluka's gaze feels like a faint tingling over the skin or a slight weight. This feeling can also change based on the emotion of the Miraluka, like that tingling turning into a slight stinging if they're angry and not controlling themselves.