Shifting bubble sign, a useful tip in manual dissection of deep anterior lamellar keratoplasty / 国际眼科杂志(Guoji Yanke Zazhi)

Here we describe shifting bubble sign in manual dissection of deep anterior lamellar keratoplasty (DALK). This sign can be noticed in more than 99% of patients. It is very useful in phakic keratoconic eyes, the leading indication for DALK. We believe that our small modification can help surgeons early in learning curve to avoid inadvertent anterior chamber penetration during the final stages of DALK.