	US 12,138,201 B2
	Methods for lenticular laser incision
Alireza Malek Tabrizi, Fremont, CA (US); Hong Fu, Pleasanton, CA (US); James E. Hill, Santa Ana, CA (US); Mohammad Saidur Rahaman, Santa Clara, CA (US); and Zenon Witowski, Pleasanton, CA (US)
Assigned to AMO Development, LLC, Irvine, CA (US)
Filed by AMO Development, LLC, Irvine, CA (US)
Filed on Feb. 15, 2022, as Appl. No. 17/651,242.
Application 17/651,242 is a continuation of application No. 15/630,629, filed on Jun. 22, 2017, granted, now 11,253,398.
Claims priority of provisional application 62/353,500, filed on Jun. 22, 2016.
Prior Publication US 2022/0168144 A1, Jun. 2, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 9/008 (2006.01); A61B 18/20 (2006.01); A61B 18/00 (2006.01)

CPC A61F 9/0084 (2013.01) [A61B 18/20 (2013.01); A61F 9/00827 (2013.01); A61B 2018/00601 (2013.01); A61F 2009/00872 (2013.01); A61F 2009/00897 (2013.01)]

11 Claims

1. A method comprising:

directing an ophthalmic surgical femtosecond pulsed laser beam into an intrastromal corneal layer of a patient, wherein at a position delivered to the intrastromal corneal layer, a wavelength of the laser is between 300 nm and 1100 nm, a pulse frequency of the laser is between 1 and 20 MHz, a pulse width of the laser is between 50 fs and 200 fs, and a pulse energy of the laser is between 20 nJ and 200 nJ;

focusing the laser beam into a focal spot in the intrastromal corneal layer, wherein a spot size of the focal spot is between 0.3 μm and 1.5 μm in diameter;

moving the laser beam to create a pattern of spaced focal spots inside the intrastromal corneal layer to disrupt cells in the intrastromal corneal layer, wherein a spot spacing between focal spots formed by temporally adjacent laser pulses is between 0.02 μm and 1 μm from center to center of adjacent focal spots, and wherein the focal spots formed by temporally adjacent laser pulses in the pattern overlap; and

forming an incision with the spaced focal spots in the intrastromal corneal layer of the patient.