Visibility of the iris, capsule, and lens may be severely limited during cataract surgery in patients with corneal opacities. In such cases, use of the standard coaxial lighting found on most operating microscopes may hinder the surgeon due to backscatter and reflection of light from the cornea. In this article, we describe the use of an oblique light source in combination with 0.1% trypan blue to improve visualization of the anterior chamber and anterior lens capsule on a patient with severe corneal scarring.
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