One-Year Efficacy and Safety of Combined Photorefractive Keratectomy and Accelerated Corneal Collagen Cross-Linking after Intacs SK Intracorneal Ring Segment Implantation in Moderate Keratoconus

<p><i>Representative cases showing changes in higher-order aberrations.</i> Coma, spherical aberration, and residual aberration were clearly altered after PRK-CXL surgery (“Plus” surgery). Colors closer to blue-black have more negative coefficients (<i>μ</i>m); colors closer to pink have more positive values. Green indicates a zero value. PreRing, before intracorneal ring segment implantation; PrePlus, before PRK-CXL; PostPlus, after PRK-CXL.</p>

BioMed Research International

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Figure 3: One-Year Efficacy and Safety of Combined Photorefractive Keratectomy and Accelerated Corneal Collagen Cross-Linking after Intacs SK Intracorneal Ring Segment Implantation in Moderate Keratoconus 

Figure 3 | One-Year Efficacy and Safety of Combined Photorefractive Keratectomy and Accelerated Corneal Collagen Cross-Linking after Intacs SK Intracorneal Ring Segment Implantation in Moderate Keratoconus 