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7

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. You couldn't compress the skull with sunglasses if you tried. MANY headaches are related to muscular/tendinous pain in the head and neck, not the brain. ...


5

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 distance - all the way to the top of my head, actually. I think what you (and I) are feeling is a suture. Between the plates or bones in our heads (separate in ...


4

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 at your prescription for eyeglasses, you can sometimes see numbers listed under the prefixes of OS and OD, or OU. They are Latin abbreviations: OS (oculus ...


3

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 distance between the eye and the lens is different. References: Here is a page explaining the differences between the two prescription types with explanation ...


3

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 this hypothesis, nor could I find any research into circulation being cut off to ears and thus making them more susceptible to basal cell cancer. Do you have ...


3

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 have considerable discomfort, it will be worth the investment for eye strain relief and ultimately less magnification.


2

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 Enter Your Eyeglass Prescription - aclens.com.


2

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. inflammation - My right eye is more likely to get inflammed, which will cause loss of acuity. Sleeping in an awkward position could cause this. DO NOT RUB YOUR ...


2

Wikipedia's eyeglass prescription, cylinder component section, says: "There are two different conventions for indicating the amount of cylinder: "plus cylinder notation" and "minus cylinder notation". In the former, the cylinder power is a number of diopters more convergent than the sphere power. That means the spherical power describes the most divergent ...


2

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 ophthalmologist if you are under their treatment). Question 1 - Can nearsightedness be just a result of eyes getting accustomed to working at very close distances most of ...


1

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 example they may help the eye to adjust to intermediate-distance objects such as computer screens. There are some with an antireflective coating which may help ...


1

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 same way it did when you put glasses on for the first time. I would guess that the -2.5 power is the lens which makes a more significant correction to the lens ...


1

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. If I lightly pull the frames that go over my ears outward and away from my scalp, all the tension melts away instantly. Contacts would probably relieve this. ...


1

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. Also, I had wire frames which left the indentation on the skin at the temples, which I think is what you are describing. When I chose frames on hinges as ...


1

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 the pressure it has on the temporals...i do believe like anywhere in the body, prolonged pressure leads to decrease in circulation and if left for a while it can ...


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