Overview

Fiberoptic image guides, when stored in dry, warm conditions and properly cared for, will give high-quality images during their life. Lessening exposure to humidity or fluid invasion during sterilization helps stop damaging visual defects.

Attempts to repair stained bundles have mixed results. Polishing bundle ends will not reach the stains. Some repair companies claim success by injecting chemicals behind the end-tip to neutralize stains. However, this can cause fiber breakage, and success is not assured.

In the end, proper-handing procedures offer the best solution

Preventing stained bundles

1. Ask factory to install glass masks at time of order.
2. Bond a lens to the objective end of the image guide, if possible.
3. Store guides in warm, dry conditions when not in use.
4. Inspect and pressure-test endoscopes before soaking to assure that voids
    have not developed which allow fluids into the scope.

Background

Sometimes, image guides show visible defects often described as mosaic staining and measleslike dark spots when viewed through an eyepiece or magnifier.

Here's why-