brain, spinal cord, and nerve disorders
Fourth Cranial Nerve (Trochlear Nerve) Palsy
Treatment of Fourth Cranial Nerve Palsy
Treatment of the cause, if identified Eye exercises Prism glasses The disorder causing 4th cranial nerve palsy, if identified, is treated. Eye exercises may help, as may wearing prism glasses. Prism glasses have lenses that are thinner at the top and thicker at the base. When light passes through the prism, it moves more slowly through the prism's base than the top. Thus, the prism bends the light and adjusts for the double vision caused by the palsy. The palsy usually resolves over time, but sometimes surgery is eventually needed. 