Comparison of intraocular pressure during corneal flap preparation between a femtosecond laser and a mechanical microkeratome in porcine eyes.

Purpose: To compare the increase in intraocular pressure (IOP) during corneal flap preparation in porcine eyes when using a femtosecond laser or a mechanical microkeratome.

Setting: The present study was conducted at a university hospital and a private clinic.

Methods: The vitreous IOP was directly measured with a cannula through the optic nerve in 24 porcine globes (n = 12 for each device).