title: White ring sign for uneventful lenticule separation in small-incision lenticule extraction.
abstract: We describe the white ring sign, which differentiates the posterior and anterior lenticular planes in small-incision lenticule extraction. The sign identifies the plane of dissection by the anteroposterior relationship between the dissecting instrument and the circular white light reflected from the lenticular side cut. Differentiating the planes enables the surgeon to dissect the anterior plane before the posterior plane, which facilitates smooth lenticule extraction and prevents complications such as cap tears, partial lenticule dissection, and a torn lenticule.
  
  
  
  None of the authors has a financial or proprietary interest in any material or method mentioned.
authors.affiliation: From Dr Agarwal's Eye Hospital and Eye Research Centre (Jacob, Amar Agarwal, Athiya Agarwal), Chennai, India; Duke University School of Medicine (Nariani), Durham, North Carolina, USA; and the University of Pisa (Figus), Pisa, Italy.
authors.forename: Soosan
authors.initials: S
authors.lastname: Jacob
authors.affiliation: From Dr Agarwal's Eye Hospital and Eye Research Centre (Jacob, Amar Agarwal, Athiya Agarwal), Chennai, India; Duke University School of Medicine (Nariani), Durham, North Carolina, USA; and the University of Pisa (Figus), Pisa, Italy.
authors.forename: Ashiyana
authors.initials: A
authors.lastname: Nariani
authors.affiliation: From Dr Agarwal's Eye Hospital and Eye Research Centre (Jacob, Amar Agarwal, Athiya Agarwal), Chennai, India; Duke University School of Medicine (Nariani), Durham, North Carolina, USA; and the University of Pisa (Figus), Pisa, Italy.
authors.forename: Michele
authors.initials: M
authors.lastname: Figus
authors.affiliation: From Dr Agarwal's Eye Hospital and Eye Research Centre (Jacob, Amar Agarwal, Athiya Agarwal), Chennai, India; Duke University School of Medicine (Nariani), Durham, North Carolina, USA; and the University of Pisa (Figus), Pisa, Italy. Electronic address: dragarwal@vsnl.com.
authors.forename: Amar
authors.initials: A
authors.lastname: Agarwal
authors.affiliation: From Dr Agarwal's Eye Hospital and Eye Research Centre (Jacob, Amar Agarwal, Athiya Agarwal), Chennai, India; Duke University School of Medicine (Nariani), Durham, North Carolina, USA; and the University of Pisa (Figus), Pisa, Italy.
authors.forename: Athiya
authors.initials: A
authors.lastname: Agarwal
mesh_terms: D003319:Corneal Stroma; D048988:Corneal Surgery, Laser; D004210:Dissection; D006801:Humans; D009216:Myopia / Q000601:surgery*