For sure, I guess depending on where you live. It would definitely help you if you were practicing in Idaho vs. Miami. I speak fluent Spanish and I live in Florida. From personal experience, I've had to translate on several occasions for optometrists I've shadowed with. They really like having me around for when someone is getting an eye exam who doesn't speak any english. Plus if you know spanish, you can make out what people are saying in other languages such as portuguese and italian. I think being able to speak another language, whether or not its spanish, is extremely useful and helpful in any profession, not just optometry.