We know that patients who underwent prior corneal refractive surgery pose more of a challenge when it comes to performing IOL calculations for cataract surgery. The reason is that the anterior surface of the cornea has been steepened while the posterior surface has been untouched. Thus, the typical ratio of anterior to posterior curvature has been altered, and our instrumentation has a difficult time accurately determining total central corneal power.
Newer instrumentation has provided some degree of assistance. We have tomographers such as the dual Scheimpflug devices, which allow us (Read more...)
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