Hot answers tagged

7 votes
Accepted

Can very tight glasses restrict blood flow to the brain?

Not towards the brain. Look at the two diagrams. The temporal artery is a branch of the external carotid artery that stays outside the skull. The internal carotid artery goes inside the skull. ...
  • 5,694
5 votes

Can tight glasses cause headaches?

I don't wear glasses much (only to read) and I feel that same groove. I also feel other grooves on my head, for example I can feel a groove over either temple going somewhat vertically for quite a ...
3 votes
Accepted

Why are there different perscriptions for glasses and contacts? Help me see eye to eye on this

Partly the additional sizing information required for contacts (Diameter and curvature of the cornea are needed for contact lenses but not for glasses) and the power also changes because the physical ...
  • 1,272
3 votes
Accepted

How is the eye score interpreted?

The information you provided Right lens Sph -0,50 Cyl -0,50 axis 10 Left Lens Sph -0,50 Cyl -0,50 axis 170 Type CR39 SN ARC is a little bit clearer than you can sometimes see. When you look ...
  • 5,920
3 votes

basil cancer on outer ear-tight glasses maybe the cause?

First, it is basal cell cancer/ basal cell carcinoma (BCC) whose leading cause is generally thought to be from sun exposure/solar radiation (1). Second, There has been absolutely no research into ...
3 votes

Do computer glasses actually work?

No one likes CVS, and computer glasses are said to increase contrast and decrease glare to alleviate eye stress. If you are sure you will be using the computer in the future for prolonged periods and ...
  • 647
2 votes
Accepted

Help reading an eyeglass prescription: What does "PL" or "PC" mean?

I finally found this: Plano - PL - This indicates there is no spherical correction in this eye. A plano lens would have no focusing power or correction to it. So it's 0. Source: How to Read and ...
2 votes

Does eyesight significantly vary from day-to-day?

There are a lot of factors involved. I'm no authoritative expert, but here are my personal observations about visual acuity fluctuations and optical knowledge, since getting LASEK (PRK) 6 years ago. ...
2 votes
Accepted

How do sphere and cylinder measurements combine in eyeglass prescriptions?

Wikipedia's eyeglass prescription, cylinder component section, says: "There are two different conventions for indicating the amount of cylinder: "plus cylinder notation" and "...
  • 221
2 votes

Using farsighted glasses to counter nearsightedness?

Note This answer is not a substitute for medical advice and medical advice questions are off-topic here. If you have concerns about your eyesight you must speak to your optometrist (or ...
  • 5,920
1 vote

Do computer glasses actually work?

According to eye care providers, computer glasses designed for digital screens which can help alleviate many of the factors which cause eye strain symptoms, although do not completely prevent it. For ...
  • 4,687
1 vote
Accepted

Increase vision clarity with eye exercices?

I've changed eyeglass prescriptions in the past, which is equivalent to what you're doing. Your eyes are no longer currently accustomed to having that kind of lens in front of them, so it feels the ...
  • 158
1 vote

Can tight glasses cause headaches?

I've been wearing glasses since 1980. I too get those depressions in the side of my head just above my ears. These don't give me headaches, but the frames do cause great tension in my scalp and eyes. ...
  • 11
1 vote

Can tight glasses cause headaches?

You are probably aware of this already, but there are frames with earpieces that not only fold in, but are on hinges with a spring and can be moved out. This might alleviate the pressure a bit. ...
1 vote

Can tight glasses cause headaches?

I had fun reading all the above reponses regarding this inquiry of having tight frames possibly leading to headaches... I also have tight frames and I tend to rest them on top of my ears to relieve ...
  • 11

Only top scored, non community-wiki answers of a minimum length are eligible