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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Cornea. 2016 Nov;35(11):1471–1477. doi: 10.1097/ICO.0000000000000948

FIGURE 4. Needle depths for each big bubble (BB) outcome.

FIGURE 4

(Left) Needle depth percentage for the full BB, partial BB, and no BB formation groups. Successful full BB formation required the deepest needle depth percentages followed by partial BB formation and then by no BB formation. (Right) Stroma below needle for the full BB, partial BB, and no BB formation groups. Successful full BB formation had the least stroma below the needle followed by partial BB formation and then by no BB formation. Values are presented as mean±standard error. * = P<0.05; ** = P<0.01; *** = P<0.0001.