My left eye is twitching left to right. What causes that to happen?

hi pamela.
Throbbing from vascular origin
A vein can produce this sensation because of the increased blood flow to a particular area due to physical activity - this can happened when you jog in the morning or after bodybuilding exercise or any other physical activity. When somebody tackles you during a football game and traumatizes your leg, the swelling can push on the vessels and this can produce a throbbing sensation. A trauma can also produce an abnormal communication between an artery and vein - this is called AV fistula.
Usually throbbing from vascular origin is not a reason to worry. You may visit a general practitioner who will probably examine the blood flow and may even order a test to look at your vessels.
Rarely the cause of throbbing is aneurism which produces a wide pulsatile area - aneurisms are often treated surgically.

• It is useful to know that common conditions such as deep vein thrombosis, blood clots or peripheral artery disease usually do NOT present with throbbing sensation but usually present with pain and swelling.

Throbbing caused by muscle twitching
Turn off the lights, sit on a chair and use a direct light from a lamp and try to make the light beam horizontal so you can see the throbbing area clearly.
If you see tiny twitches you should know that your throbbing sensation is produced by your muscles.
Conditions causing muscle twitching
Although muscle twitches are often idiopathic or as a result of muscle hyperactivity or hyperexcitability because you had too much coffee or you had a heavy exercise earlier, muscle twitches can be a symptom of a serious medical conditions.
B12 deficiency. This is found especially in alcoholics or vegetarians. Muscle twitching is not an early symptom, usually B12 deficiency presents with anemia and decreased or altered sensation.
Multiple Sclerosis. Usually presents with pain behind one eye. Muscle twitching is a common symptom.
infection and Amyotophic Lateral Sclerosis also known to cause muscle twitches. It is advisable to see a neurologist for further evaluation, the neurologist is most likely to order MRI and blood test
read up more at this link.

https://www.steadyhealth.com/medical-answers/causes-of-throbbing-or-pulsing-sensation-in-arms-or-legs
Understanding Symptoms of Aneurysm
https://www.steadyhealth.com/topics/strange-throbbing-pulsing-in-my-thigh-just-above-knee?page=2
what is the cause of Pulsating in my leg Google Search

You may have a nervous tick but visit a doctor to rule out anything else

The constant use of computers are the cause of eye problems for many a person these days. I had twitching troubles a while back. It has to do with the manner in which we use it. It is not recommended to stare at the monitor constantly without any break. Take short breaks in between long sessions of staring at the monitor. Rest your eyes frequently. Get adequate sleep. All these are basic tips that any optometrist would tell you. Don't try to self medicate. If it is a problem that is recurring, then best consult with an eye clinic before it gets worse.

Sounds like the battery is weak which will cause the gauges to twitch.

The fan may be on when the door is open but the oven is not generating microwaves at that time. Replace defective microswitch.

I used to get the same problem with my razer lachesis....and what i found out was my game pad was causing it as well as my computer vibrations....the app error could be that your driver might be wrong just go to razer and get the new firmware update http://www.razersupport.com/index.php?_m=downloads&_a=view&parentcategoryid=8&pcid=0&nav=0 that is the link for the updates ect..pls let me know if that helps or if not i will assist you further.

I once had the same problem with a philips deck, except that both meters were twitching and both channels were distorted.

And guess what - it started happening when i reassembled it after i oiled the motor axis as it was a bit noisy.

No, that doesn't mean this had anything to do with the motor, but i had to disassemble the deck once more, i moved the wires and connectors a bit and the meters and outputs returned to normal functioning, so my guess is that there is a bad connection somewhere.

Try disconnecting the connectors inside the deck, see if the contact pins are dirty or oxydized, if so, clean them and reconnect - this might help.

Also check for any broken or shorted wires, broken insulation on wires and bad solder contacts.

I don't know if this will help, it sure did in my case, but i guess it's worth trying.

good luck

3rq8 (Triarcuate)