There is no scientific evidence to suggest that using castor oil can help reduce eye strain. In fact, there is no evidence to support the use of castor oil for any eye-related issues.
Eye strain, also known as asthenopia, is a common condition that can be caused by a variety of factors, including prolonged use of electronic devices, reading or driving for long periods of time, and working in poorly lit environments. The symptoms of eye strain can include fatigue, headache, and blurred vision.