Check with a professional dive store as those chemicals can discolor over time and actually make things worse. An optometrist knows which glue to use.i have the same issues with unable to see things at close up (e.g. dive watch). i'm looking for a transparent glue that able to permanently stick "plastic to glass" or "glass to glass" ensuring the glue is completely see through when cured/dried up. Was wondering if Loctite Glass Glue able to perform such task.