I'm sorry to hear about the eye strain you're experiencing. Working long hours on a computer, especially with detailed tasks like AutoCAD, can often cause eye discomfort and strain.

Here are some suggestions that might help:

• Follow the 20-20-20 rule: Every 20 minutes, look at something 20 feet away for at least 20 seconds to reduce eye fatigue.
• Ensure proper lighting: Avoid glare on your screen by adjusting your workspace lighting.
• Adjust your screen settings: Increase text size and adjust brightness and contrast to comfortable levels.
• Use lubricating eye drops: Since you have mild nearsightedness (negative 0.75 in one eye), dryness might contribute to strain. An eye gel like Genteal Gel, which contains lubricating agents, can help relieve dryness and discomfort. Use it as directed by an eye specialist.
• Maintain good posture: Keep your screen at eye level and about an arm's length away.
• Take regular breaks: Short breaks can help reduce continuous strain.

If the strain persists or worsens, it is important to consult an ophthalmologist (eye specialist) to rule out any underlying issues and to get personalized advice.

Remember, proper eye care is essential, especially with prolonged computer use.To narrow down potential causes, we will need some more information.I understand that you're experiencing eye strain. To help me understand your situation better, could you please tell me your age and gender?