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Spontaneous improvement of channel deposits following Intacs implantation
Matthew B Kaufman1, Deepinder K Dhaliwal
1University of Pittsburgh School of Medicine, UPMC Eye Center, Pittsburgh, Pennsylvania 15213, USA. kaufmanmb@upmc.edu
Purpose:
To report a case of filamentous crystalline channel deposits and stromal haze extending outside the channel, which continued to worsen more than 3 years after implantation before eventually improving without significant intervention.
Methods:
A 48-year-old woman presented for refractive surgery evaluation. Uncorrected visual acuity was 20/400 in both eyes. Ocular history was significant for mild blepharitis but was otherwise normal. Approximately 4 months after bilateral Intacs (KeraVision) implantation, the patient developed intrachannel deposits in both eyes, which had increased significantly at 3-year follow-up.
Results:
The intrachannel deposits and haze spontaneously improved, and 9 years following implantation few deposits and little haze remained.
Conclusions:
Channel deposits, opacification, and haze are widely reported complications following the implantation of intrastromal corneal ring segments. Such deposits and opacifications are generally not clinically significant and may resolve spontaneously.