Femtosecond laser corneal ablation threshold: Dependence on tissue depth and laser pulse width

Diode pumped, all‐solid‐state ultrafast lasers are now widely used to perform minimally invasive refractive surgery and keratoplasty procedures. Despite such use, a systematic study concerning ultrafast laser–tissue interactions is lacking. We determined the corneal ablation threshold as a function of the laser pulse width and stromal depth by simultaneous monitoring of the intensity of the laser‐induced plasma and the second harmonic generation signals (SHG) from the collagen.

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