Are Non Prescription Glasses Bad For Your Health?

To decide whether non prescription glasses are bad for your health, you first need to consider which definition of “non prescription glasses” you are using. This particular term is used in two different ways. It can mean “fake” or fashion glasses, which do not have corrective lenses; they are similar to normal sunglasses, except they are not shaded. The second definition of “non prescription glasses” means that they are vision-correcting glasses that were acquired without a prescription.

If you are using the first definition, and want to go shopping for fashion glasses that have no corrective properties, then you will be perfectly fine, as they will not damage your eyes at all. After all, people have worn sunglasses for many years without ill effects, and of course sunglasses may also protect your eyes from damaging ultraviolet rays, depending on which ones you buy. The main danger for people who wear non prescription fashion glasses appears when vanity overrides sanity. It is ill-advised to drive at night or in dull conditions wearing dark sunglasses, and although there is no danger to your eyesight from wearing the glasses, you are at increased risk of having an accident due to decreased visibility.

A little care needs to be taken if you are going to wear the corrective type of non prescription glasses. If the wrong strength of lenses is selected, the result can be eyestrain and associated headaches, and over a period of time this can cause damage to the eyes.

If you suffer from presbyopia – a condition involving the deterioration of eyesight due to aging – you will be more likely to benefit from cheaper non prescription reading glasses. However, it is still important to go to a reputable store, such as a pharmacy, where you will be able to try a wide selection of glasses of differing strengths. Once you have found the optimal strength of lenses, you will be able to pick out a pair in a style of your choosing.

For people younger than 40 years old, and particularly in cases where blurred vision develops rapidly, or is accompanied by other symptoms such as headaches, it is vitally important to see an optician or optometrist in the first instance. There are well documented cases where people have developed vision problems, to find that the underlying cause was a more serious health condition. Eye specialists are trained to spot these problems – though in the vast majority of cases, the cause of the vision defect will be normal and benign.

Some of the possible health conditions that have been noted to affect vision include diabetes, where rapidly changing blood sugar levels can affect the quantity of fluid in the eyes, causing swelling which results in distortion of vision. Another, potentially fatal, condition is extreme hypertension which can lead to heart attacks and strokes. Such an underlying problem may be spotted by an optometrist because it can lead to swelling of the optic disk. Even brain tumors have been identified by eye specialists during examinations for the cause of blurred or double vision.

So to answer the question whether non prescription glasses are bad for your health, in general they are not. If you are healthy and are positive you do not have any underlying medical conditions, they will be perfectly fine. However, all cases where there is a sudden change in your eyesight should be investigated by an expert to rule out anything more serious than a vision defect. In general, once you have been prescribed your first pair of corrective glasses, usually fairly early in life for shortsightedness, it is recommended that you see an optician for a retest every two years. If you are over 40 years old, though, and your sight has slowly deteriorated over a long period, then non prescription glasses will be fine, though there is no reason to avoid seeing a specialist if you are concerned about any other accompanying symptoms.

Source by Len Grinder

David Clark DC Pro-X Headset Review

There’s a brand new aviation headset that’s just recently been released. It’s made by the David Clark company, and it’s called the DC Pro-X. Actually, there are two types of these headsets – an active noise reduction model and a passive noise reduction model. This article will be reviewing the active noise reduction model.

The David Clark DC Pro-X headset is a different type of headset for the company, in that it’s extremely light. Most pilot headsets weigh between 12 and 17 ounces, but this new headset weighs only 7.5 ounces. This can really make a difference in comfort, especially on longer flights.

Another feature that pilots like is the Bluetooth connectivity. A cell phone or an ipod can be connected wirelessly to the headset. This is very convenient for pilots when they need to make a quick call while still on the ground and don’t want to go through the hassle of donning their headset and adjusting it all over again.

It’s also a nice feature to be able to listen to music while flying a long cross country trip. It can help make the time pass more quickly.

The style of the ear cups is known as “rest-on-ear”. The idea is that the ear cups don’t completely envelope the ear and cause discomfort to the pilot’s ears. Sometimes the squeezing effect can cause some real pain after several hours.

The active noise reduction (ANR) technology works well to cancel out surrounding noises in the cockpit. This technology requires batteries, but the DC Pro-X has dual-coil drivers in their mics so communication won’t be lost in the event of battery loss.

Here’s a summary of the pros and cons of the David Clark DC Pro-X:

Pros:

  • Extremely lightweight, good for long flights
  • Easy to use
  • Has Bluetooth connectivity
  • Collapses easily to fit into flight bag
  • Well made – they feel like they’ll last
  • 5 year warranty
  • Excellent customer service
  • Affordable – Priced at $637.00, they’re less than comparable headsets

Cons:

  • Some pilots complain that they don’t block out noise adequately
  • There were also some complaints that the headset didn’t fit over their sunglasses

Because the DC Pro-X was only released a few months ago, it’s difficult to find a lot of reviews, but so far pilots who have purchased them have been quite happy with this newest headset from David Clark. This company has been around a long time and has been producing great aviation products since 1941.

Source by Joseph B Wood

Why Women Prefer Bad Boys

Not real: Nice guys are too nice. No one can always be that nice unless they’re a saint. They are busy being nice instead of being real and women instinctively don’t trust that. Bad boys “keep it real”. Nice guys don’t want to upset the apple cart.

Respect: No one respects a doormat. Nice guys don’t set boundaries or make any real demands. A bad boy doesn’t let a woman walk all over him or control him. Women can’t respect a man they can control. No respect = No attraction.

Predictable: Most people lead boring, predictable lives, so they’re attracted to people who are exciting and unpredictable. Bad boys are always a challenge. Nice guys are never a challenge. Predictable = No excitement = No challenge = I prefer a bad boy.

Mother Nature: Women are designed to nurture. However, instead of doing this with children, they often end up doing it with bad boys. They think their love will save them. Nice guys rarely need to be saved.

Fixer-Upper: Nice guys don’t usually need to be fixed. Bad boys usually do, so they become a project. Women think if they can “create” the perfect man, he will never leave them. Also, if they’re busy fixing someone else, they don’t have to look at what needs to be fixed in their own lives.

Sperm wars: Women are designed to procreate with the strongest possible genes. Bad boys are sending an unconscious message that they have great genes, so they’re not afraid of losing the woman by misbehaving. Nice guys are sending a message that they don’t think their genes are good enough, so they won’t misbehave.

Fear of intimacy: If a woman is afraid of intimacy, she subconsciously knows she can avoid it with a bad boy, since she can never get close enough to him to have to go there. A nice guy will eventually want a commitment, and that’s scary.

Low self-esteem: We don’t feel comfortable with people who treat us better than we treat ourselves. If you don’t think much of yourself, the bad boy is simply reinforcing your negative belief. A nice guy is treating you in a way you’re unfamiliar with.

Sex: Women feel a nice guy won’t be good in bed. They like to be manhandled sometimes and think a nice guy won’t be able to take control and get the job done. A bad boy comes across as being able to get the job done, even though that may not always be the case.

Hot: Have you ever seen a bad boy who wasn’t hot? I’m sure there are a few, but they wouldn’t be able to get away with half the stuff they did if they didn’t look so good. Meanwhile, when a woman describes someone as a nice guy, she means, “He’s not hot”.

Charm: Nice guys don’t always know what to say, and are sometimes at a loss for words. Bad boys can be very charming and know exactly what women want to hear. However, they eventually switch over to being selfish. By the time they reveal their true colors, the woman has fallen for them and has a hard time letting go.

Protection: Historically, men have protected women – physically and otherwise. Bad boys give the illusion of being able to protect women, while with nice guys, women aren’t so sure.

Life is about balance. Most men fall into either the bad boy or the nice guy category. The ideal man is neither, but walks that fine line between the two. Until men learn how to do this, more often than not, women will choose the bad boy.

Source by Lucia Demasi