This is the real reason you get little blobs of light in your vision

The eye is composed of a vitreous humor which is a transparent, jelly-like substance that fills the majority of the eye. With age, this surface becomes susceptible to myodesopia, or floaters. Those are the little specks of light in your field of vision. This occurs when the sun's light projects the shadow of these floaters onto the retina. This phenomenon is particularly common in short-sighted people. Be aware, if the presence of floaters in your eyes becomes more intense then you should consult your optician or doctor.

Check out the video above for more on this phenomenon...