Will long-term usage of computer cause cross-eyed?

Is this you?

Isn't eating spam supposed to be good for your eyesight?

While this can cause discomfort, blurry vision, or temporary misalignment, it's unlikely to cause permanent crossed eyes. You might want to follow the 20-20-20 rule (every 20 minutes, look at something 20 feet away for 20 seconds), adjust your screen setup, and take regular breaks. If your eyes feel misaligned or you notice persistent issues, it's a good idea to consult an optometrist to rule out other conditions. Also, if you ever need a creative way to relax, you could promote print on demand on Instagram as a fun side project! With the right adjustments, your eyes should improve!