Ray of lights, what are they?

years back I saw these little ray of lights glittering with force some seconds coming together stronger and stronger and then as I focused on it it just went away out of nowhere.

Now and then I see the same things in my home different places and it last 4 seconds or so. Not as strong as in coming together, not as many.

I am always alone when it happens. I don't know if there is something wrong with my eyes. Or if this is paranormal.

It does not look like round orbs, it is narrow, white, light, possibly sometime going to yellow or orange but most of it is made of white.

I wonder if anyone else has seen it?