PMC3392918_01
Double-ring sign seen at nasal edge of anterior lens capsule.. Note: Superficial outer (white asterisk) and deep inner (white arrowhead) layers seen most clearly at the nasal inferior edge of the anterior capsule.
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The double ring of the capsule edge was visible on slit lamp examination through a dilated pupil (Figures 1A and 1B).
Photograph with transillumination showing the double-ring sign.. Note: White asterisk and arrowhead indicate double-ring sign.
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Notably it did not extend to the equator (Figure 2).
Cirrus SD-OCT image showing the superficial outer and deep inner layers of the anterior lens capsule reconvening within the optic zone of the PCIOL.. Note: White asterisk indicates the superficial outer layer of the anterior lens capsule; white arrowhead indicates deep inner layers of the anterior lens capsule.. Abbreviations: SD-OCT, spectral-domain optical coherence tomography; PCIOL, posterior chamber intraocular lens.
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Another SD-OCT device (RTVue; Optovue, Fremont, CA) and the time-domain anterior segment OCT (Visante; Carl Zeiss Meditec) could not clearly capture the superficial outer and deep inner leaflets of the anterior capsule (Figure 3) due to poor image quality or inadequate resolving power, respectively.