Vision loss typically not acute but develops over months to years (unless traumatic<unk> 
Cloudy or blurry vision
Difficulty with night time vision
Colors appear faded
Appearance of a halo around bright lights
+/- Recent trauma to the eye
Lens opacity
Darkening of red reflex
Decreased visual acuity
Cataracts
Painful
Red eye 
Arteritic anterior ischemic optic neuropathy
Ocular palsy
Optic neuritis
Papilledema
Temporal arteritis†