LAUSR

Artificial tear eye drops available over the counter are the primary tear substitutes used in the management of dry eyes and ocular surface disease with poor epithelial healing. When conventional therapy with the above, or combination with topical anti‐inflammatory medications fail, biological tear substitutes (BTS) are one of the alternatives. Like artificial tears, BTS provide lubrication to the ocular surface; however, it differs by closely mimicking the biochemical properties of the natural tears produced by the lacrimal gland. The osmolarity and pH of serum and natural tears are similar,[1] and in addition, BTS contains growth factors, vitamins, enzymes, and other substances, which provide the nutrients necessary for epithelial healing.[2]