The incidence of overcorrection after LASIK for myopia is low, but the results of re-treatment are variable. Re-treating often results in a shift back to myopia, leaving the patient unhappy. To improve the results of LASIK enhancement surgery, a new formula is warranted. In 1999, Drs. Lindstrom and co-workers noted that laser treatment achieved different effects in eyes with primary versus secondary hyperopia. They attributed this effect to dynamics of wound healing.