Should I Wear Glasses for My -1.75 and -0.75 Eyes?

Omega-3 and lycopene are indeed good for them. Apart from that, you can get these benefits by taking Murine 300 or Vitacover. The proper dosage is to take 1 capsule of one of them per day. These capsules have a role in maintaining your heart's health & your eyes' good shape. 

The retina is a thin film of tissue making the inner surface of your eye that transmits the images outside to your brain. Problems with the retina can lead to serious vision issues. Signs of the problem with the retina you might get are blurred vision, flashes of light that come out of nowhere, and the perception of something that is not there in your field of vision. Causes can range from aging to serious conditions like diabetes. In the case of treatment, the restoration of vision is usually done by a surgical operation on the damaged retina. 

Seeing flashes of light or "lightning" in your peripheral vision can sometimes be a symptom of an eye related issue. However, stress and anxiety can also cause visual disturbances, including perceived flashes of light. Meantime it may be helpful to practice stress management techniques, such as deep breathing exercises, mindfulness or meditation. If this also doesn't help then visit an eye specialist to get it checked.

You might be affected by a disorder of the eye, where the nervous cells in the eye are not working properly. This may be due to aging, high blood pressure, or diabetes. Nevertheless, it also might be that a person exhibits signs of blurred, partial, or total vision loss. Treatments for that might include taking special eye drops or doing procedures that will be put in place to protect your nerve endings that are situated in the eye. Your optometrist can prescribe eye drops or other medications to improve your vision. 

You might be having allergic reactions triggered by your exercise. When you do certain workouts at the gym, like lifting weights or floor exercises, your eye swells up. This could be due to allergens at the gym or materials from the equipment. It's good that outdoor activities don't cause this problem. To prevent the symptoms, try wearing protective eyewear (goggles) at the gym or using antihistamine eye drops before you work out. It's a good idea to consult with an allergist for a complete evaluation and management plan.

It is likely that the puffiness around your eyes can be age related.  But certain medial conditions can also cause puffiness such as thyroid problem, allergies etc. Please consult a doctor if the puffiness worsens or does not go away.