Dr.Ingawale Ameya Rajas Deepak
PURPOSE: To generate virtual models using different hinge locations and to investigate the advantages of a temporal hinge to a superior in LASIK. DESIGN: Cross sectional. METHODS: An image processing software was used to construct virtual LASIK models of 56 slit lamp photos of eyes. For a given hinge location and width, the largest flap diameter and maximum treatable stromal bed area was calculated, comparing temporal hinge to superior. RESULTS: Temporal hinge allowed a greater flap diameter than superior and thus a greater treatment zone area for a given hinge width. A temporal hinge allowed a greater hinge width than a superior hinge for a given treatment zone area. CONCLUSION: We provide a rational basis for a mechanically stable temporal hinge. Moreover, we provide a method to pre–operatively model flap size and hinge location, using a slit lamp camera and an image editing software.
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