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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: Am J Ophthalmol. 2012 Sep 8;154(6):940–948.e1. doi: 10.1016/j.ajo.2012.06.007

Figure 1.

Figure 1

Quantification of corneal neovascularization. A graphics editing software (Photoshop CS2; Adobe Systems Inc.; Berkeley, CA) and a mathematical program (MATLAB; MathWorks Inc.; Natick, MA) were used to analyze slit lamp digital corneal photographs. These metrics were computed as follows: neovascular area, which measures the area of the corneal vessels themselves; vessel caliber, which determines an approximate mean diameter of the corneal vessels; and invasion area, which measures the fraction of corneal area in which neovascular incursion is seen.