All are true about blackball hyphema EXCEPT
Post-traumatic hyphema is an ophthalmologic emergency that can result in permanent vision loss. Accumulation of blood in the anterior chamber causes trabecular meshwork obstruction, thereby elevating IOP. Hyphema with increased IOP can result in corneal blood staining, reduced corneal transparency, and vision loss. Hyphemas are graded by the percentage of the anterior chamber (AC) filled with blood, and range from Grade I (blood occupying <1/3 of the AC) to Grade IV (blood occupying 100 % of the AC, or "eight-ball eye").
AC completely filled with bright red blood is total hyphema, blackball hyphema if dark red blood
Also called Eight ball hyphema
The black colour is suggestive of impaired aqueous circulation and decreased oxygen
Blackball hyphema causes less pupillary block and less angle closure
Glaucoma