Patent ID: 8409182

Claim:
A method of thermally separating tissue, comprising: a. defining a predetermined closed curve at a tissue containing collagen, wherein said predetermined closed curve defines an interior and an exterior; b. adding a light-absorbing agent to said tissue; c. selecting a light beam to be directed at said tissue, wherein said light beam is selected with the intent that said light beam is absorbed by said light-absorbed agent to cause a local thermal effect at said tissue and therewith said light beam parameters are characterized to: (i) remain at a sub-ablation level for said tissue, and (ii) transition the collagen in said tissue from a crystalline helixcal structure to an amorphous structure resulting in shrinkage or contraction of said tissue; d. directing said selected light beam at an initial and interior point of said predetermined closed curve; and e. continuing and further directing said selected light beam starting from said initial and interior point of said predetermined closed curve along a remaining path of said predetermined closed curve until at least the curve is closed, wherein said tissue is thermally separated as a result of said directed light beam.