Should I Wear My Specs Full Time?

Red eyes are common and can happen for many reasons, like a stuffy nose, dust, tiredness, or chlorine. Sometimes, conditions like arrhythmia or long periods of staring at screens can also cause red eyes. To help, you can use artificial tears to keep your eyes moist. If your eyes still feel irritated, taking a break and resting them is a good idea.

You might have a lazy left eye, which is also called strabismus. This is caused by the fact that the eye muscles do not function as they should. Sometimes, they can also lead to symptoms such as double vision or your eyes not looking in the same direction. Don't worry, there are treatments available, like special glasses, eye exercises, or even surgery, to help improve your condition.

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.

The symptoms you are experiencing, may or may not be linked to the dosage of sertraline. It is better to consult with a eye doctor for proper evaluation 

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. 

Using MDMA after LASIK is risky because it can cause high eye pressure, blurred vision, and light sensitivity, which are all hazardous for your healing post-operative eyes. Therefore it is critical to shield them during this time and abstain from substances like ecstasy that might hurt them.