Transpalpebral near‐infrared LED transillumination for anteriorly located intraocular tumors imaging

Abstract

PurposeTo study the possibilities of transpalpebral near‐infrared LED transillumination for intraocular tumors imaging.MethodsThis study was conducted on 35 people (35 eyes) with intraocular tumors of the ciliary body and iris. In all cases a color photo of the anterior eye segment, transpalpebral near‐infrared LED transillumination, ultrasound examination were made.The device for transillumination consists of compact wireless near‐infrared LED‐probe, monochrome camera able to capture video and images in the near‐infrared range, slit lamp adaptor and a computer with software. For transpalpebral transillumination were used near‐infrared light sources with a wavelength of 940 nm. Examination was performed without local anesthesia.ResultsIn all cases structures of the ciliary body were registered by transpalpebral near‐infrared LED transillumination. Monochrome images of the ciliary body structures of good diagnostic quality were captured during the infrared transillumination of the eye in all cases.In patients with intraocular tumors transpalpebral near‐infrared transillumination made it possible to visualize ciliary body structures and tumor shadows on sclera and to outline their borders. In all cases anteriorly located intraocular tumor shadow was detected and tumor localization in relation to the ciliary body structures was estimated.ConclusionsTranspalpebral near‐infrared LED transillumination provides imaging of the ciliary body and accurately estimates the projection of its structures to the sclera. Transpalpebral near‐infrared transillumination helps to visualize intraocular tumors and to determine their projection to the sclera and can be used for diagnostic purposes and during destruction of the tumor.