Breath Guard for Volk 90D and 78D

thingiverse

I helped my ophthalmologist college friend design "breath guards" for her Volk 78D and 90D slit lamp lenses. While the masked patient is being examined, these guards help the lenses from becoming fogged up. The guards have been modeled in a slightly bent configuration so that it grasps the lens better. To load the lens into the guard, roll the lens into the channel on one side. You'll also notice a little ellipse cut out of the back side to give a bit more space to grasp the knurled edge. Here is a video showing how a lens is mounted onto the breath guard: https://spark.adobe.com/video/daX7kTYYeeIgD