The Use of the 193-nm Excimer Laser for Myopic Photorefractive Keratectomy in Sighted Eyes

Experimental evaluation of online optical coherence pachymetry for corneal refractive surgery

“…In this experimental evaluation with human corneas we observed that the optically measured central ablation depth was significantly higher than the calculated depth. Also with US [12,22] and optically [9,20,37], significantly more tissue was ablated than predicted, which most probably is due to dehydration of the corneal stroma [9,11,30] or other laser-tissue interactions [4,18] occurring during excimer laser ablation. It seems that the effects on corneal tissue from dehydration can be caused from exposure to air with evaporation and consequent thinning, which has been found to be dramatic in some cases, ranging from 10% to 13% in the normal, epithelialized cornea in a 10-min period [10,35] and up to 28.5% after 50-60 min [7,33].…”

Excimer laser PRK and corticosteroid induced IOP elevation: the tip of an emerging iceberg?

“…Suggestions for prevention have included (1) keeping medicines and superglue separate, (2) to have red bottle tops for superglue (though this was the situation in our first case), (3) to have superglue preparations with similar packaging to medications banned,2 and (4) to have distinctive bottle shaping. 3 We recommend the use of the snap safe lid (Fig 2).…”

Short-term and long-term effects of small incision lenticule extraction (SMILE) on corneal endothelial cells

“…When comparing the preoperative and postoperative ECD, no significant endothelial cell loss was shown at neither 1 day nor 1 year, and the changes were almost negligible. There are numerous studies in which influences of excimer laser-based refractive surgery on corneal endothelial cell loss were tested [15][16][17][18][19][20][21][22][23][24][25][26], and the annual rate of endothelial cell loss was within the range of physiological age-related endothelial cell loss [27,28]. Recently, endothelial cell loss in patients who underwent femtosecond-assisted refractive surgery was also reported.…”