BSS PLUS is a sterile intraocular irrigating solution used during intraocular surgical procedures, including those requiring long perfusion times. It consists of two parts: Part I, a 480 mL solution containing sodium chloride, potassium chloride, sodium bicarbonate, and other ingredients in water, and Part II, a 20 mL concentrate with calcium chloride dihydrate, magnesium chloride hexahydrate, dextrose, and glutathione disulfide. The reconstituted product is used to help maintain balance in the eye during surgeries.