Comment on

• The use of the 193-nm excimer laser for myopic photorefractive keratectomy in sighted eyes. A multicenter study.

  Sher NA, Chen V, Bowers RA, Frantz JM, Brown DC, Eiferman R, Lane SS, Parker P, Ostrov C, Doughman D, et al. Sher NA, et al. Arch Ophthalmol. 1991 Nov;109(11):1525-30. doi: 10.1001/archopht.1991.01080110061035. Arch Ophthalmol. 1991. PMID: 1755731 Clinical Trial.