yes
Yes, it can even kill you.
Yes, abcessed tooth cause heart problem.
Mercury can cause memory loss, loss of coordination, vision problems
If you stare at it for to long it can cause everything you look at to have a red glow to it and cause headaches and more eye problems
Vitamin A deficiency can cause vision problems. Eat vitamin A-enriched foods like carrots, pumpkins, and leafy vegetables to avoid any eye-related problems.
Cones that do not respond to light cause vision problems, particularly in the daytime. They are responsible for color vision and detail, so dysfunction can lead to color blindness and reduced visual acuity.
Well computers and laptops can mess up your vision if you spend to much time on it. After that, you'll need glasses when your vision gets blurred.
You may have double vision if you have eye strain. This could be caused from staring at a screen for too long (such as the computer or television) or from having vision problems and not wearing glasses.
Which drugs cause double vision
there is no evidence that sitting too close to the tv causes vision problems, although it can cause eyestrain. however children are less likely to develop eye strain than adults.
Some people feel dizzy, confused, lightheaded, or less alert when using these drugs. The drugs may also cause blurred vision and other vision problems.