“…Other possible hypotheses included trabecular meshwork swelling, aqueous outflow obstruction by zonular fragments, the action of visco-elastic agents, residual lens particles, inflammatory debris, soluble lens proteins, pigment or viscous aqueous or vitreous plasmoid humor. 1,2,5,9,10,[18][19][20] The use of visco-elastic agents during cataract surgery was widely incriminated in the acute postoperative IOP increase. Berson, in 1983, showed that instillation of sodium hyaluronate into the anterior chamber of enucleated human eyes caused a 65% decrease in outflow facility.…”