While traditional lenses have gone far to help the millions of people who suffer from farsightedness or nearsightedness, they add a marked spherical, convex curvature to the shape of the lens. This can distort the appearance of the eyes and facial areas. Traditional convex lenses can create a magnifying, bug-eyed effect on farsighted prescriptions or a minimizing, beady-eyed effect on nearsighted prescriptions. This noticeable curvature of the lens distorts the appearance of the wearer and the glasses alike, detracting from overall perceived attractiveness while also dealing an unnecessary blow to self-confidence.

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Another factor to consider is that, due to their flatter profile and closer proximity to the face, aspheric lenses may produce noticeable reflections for some wearers. Anti-reflective coating is recommended for all aspheric lens wearers to eliminate any potential for visual distraction that reflections can cause.

Hedgers primarily opt for physical trade wherein the asset is exchanged upon maturity of the contract. It is particularly popular in the commodity market, wherein physical trade is undertaken by producers and companies to keep the cost of raw materials at a fixed level. It ensures stability in the price levels in an economy.

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Futures and options are the major types of stock derivatives trading in a share market. These are contracts signed by two parties for trading a stock asset at a predetermined price on a later date. Such contracts try to hedge market risks involved in stock market trading by locking in the price beforehand.

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If the word aspheric is new to you, we’ll break down everything you need to know about what aspheric lenses are, how they work, and the benefits and drawbacks of wearing them. By the end of this article, you’ll feel primed and ready to discuss aspheric lenses with your doctor if they are of interest to you.

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Futures and options trading is widely practised on leverage, wherein the entire cost of trading does not have to be paid upfront. Instead, a brokerage firm finances a stipulated percentage of an entire contract, provided an investor keeps a minimum amount (mark to market value) in his/her trading account. It increases the profit margin of an investor substantially

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However, in case of a price rise in the potato market, a farmer stands to lose out on profits. Such losses can be offset through a put option contract, which gives the farmer a right but not an obligation to meet the conditions of a contract. In case of a fall in the market price level, he/she can execute the options contract to ensure negligible losses. Price rise on the other hand, allows the farmer to withdraw from the contract and sell the items in the marketplace at the prevailing price.

Most speculators engaging in derivatives trading aim to opt for cash settlement, wherein the physical transfer of an asset is not conducted. On the contrary, a difference between spot price (current market price) and the price quoted to the derivative is settled between two parties, thereby reducing the hassles of such trade.

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A futures contract to buy/sell underlying security has to be followed up on the predetermined date at a contractual price. On the other hand, an options contract provides a buyer with a choice to do the same, if he/she profits from a trade.

Future and option trading are different in terms of obligations imposed on individuals. While futures act a liability on an investor, requiring him/her to follow up on a contract by a pre-set due date, an options contract gives an individual the right to do so.

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However, as explained above, futures and options have high risks associated, as accurate predictions regarding the price movements have to be made. A thorough understanding of stock markets, underlying assets and issuing organisations, etc., have to be kept in mind to profit from derivative trading.

Subsequently, a long position is undertaken by individuals expecting the prices to fall in the future as per their market analysis. Investors plan on buying securities in the future at a reduced price through such contracts, to profit in relative terms.

The technology behind aspheric glasses and contact lenses is directly related to advances made in camera lens technology. Just like the human eye, some camera lenses are shaped in such a way that visual aberrations and distortion can occur in the images they capture. The shape of the eye can also contribute to distorted vision. That’s why lenses are specially designed to balance and correct for the unique shape of a person’s eye—and why the technology has had to come a rather long way.

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In general, many people with moderate to high need of vision correction for nearsightedness or farsightedness can benefit from the advances of aspheric lenses, particularly if worn in prescription glasses. Those with lower prescriptions will not see noticeable improvements to make the cost of aspheric lenses worthwhile. While some may want to try aspheric contact lenses, particularly those with bifocal rather than multifocal prescriptions, the benefits are mixed and should be discussed with your eye doctor. Those with astigmatism may not benefit as high as others and may be better off discussing toric lens options. Finally, aspheric lenses are a good option for many who use non-prescription reading glasses, too! If your readers are at a high reading power of +4.00 or higher, you may want to explore aspheric options.

Speculators predict the direction of price movement in a market as per an intrinsic valuation and economic condition and choose to take an opposite stance in the present to gain from such price fluctuations. Taking a futures and options example, if an investor predicts the price to increase in the future, he/she can assume a short position in the derivatives market. It indicates a purchase of a stock/derivative in the present to sell it on a later date, at a higher price.

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The major disadvantage of aspheric lenses is their price. These advanced vision correcting lenses cost more to manufacture than traditional lenses do, involving more steps, more precision, and more labor. If you have an extremely mild need for vision correction, then aspheric lenses may not be the most logical choice for you.

Hedgers aim to secure their gains or expenditures in the future by entering into a derivative contract. Such traders are popular in the commodity market, wherein individuals try to secure an expected price of a particular item for a successful exchange. Understand it with the help of a future and option trading example. A farmer can enter into a futures contract with a wholesaler to sell 50 kg of potato for Rs. 20 per kg three months from the current date. On the day of maturity, if the price of potatoes falls below that level, the farmer successfully hedged his position to minimise the overall risk associated with trading in the future.

Future and options in the share market are contracts which derive their price from an underlying asset (known as underlying), such as shares, stock market indices, commodities, ETFs, and more. Futures and options basics provide individuals to reduce future risk with their investment through pre-determined prices. However, since a direction of price movements cannot be predicted, it can cause substantial profits or losses if a market prediction is inaccurate. Typically, individuals well versed with the operations of a stock market primarily participate in such trades.

Such individuals enter into futures and options contracts in the share market to reduce investment volatility concerning price changes. Locking in a price for transaction at a future date helps individuals realise relative gains if the price moves adversely with respect to a trading position assumed by a buyer. However, in case of a favourable fluctuation, individuals entering into a futures contract can incur significant losses. Such risk is mitigated in an options contract, as an investor can pull out of a deal in case of favourable price swings.

Finally, as mentioned in the beginning of this article, aspheric lenses are also an option for some contact lens wearers. However, the performance of aspheric contact lenses, when compared with that of aspheric glasses, may leave something to be desired. Many find that regular, spherical contact lenses work just as well, if not better than the newer aspherical contact lenses do. With two primary options of aspheric contact lens prescriptions being bifocal and multifocal, visual aberrations can be corrected in the wearer. However, visual contrast may reduce slightly, while glare caused by driving at night may increase - particularly for those who wear multifocal aspheric contacts. For these reasons, aspheric contact lenses may not be for everyone.

Not only are ‘coke bottle lenses’ a thing of the past, but aspheric lenses also offer a better degree of vision correction. When wearing traditional lenses, you may notice some visual distortion when you look anywhere other than the direct center of the lens. Aspheric lenses, on the other hand, promote a wider field of vision with better peripheral vision and more consistent overall image magnification, allowing for clearer and more accurate vision. This is the same reason many photographers prefer aspheric camera lenses - a wider field of vision means more of the beautiful world is accurately captured in a single glance.

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As you can see, aspheric lenses offer many aesthetic and vision-correcting benefits for their wearers. But just like any prescription, these types of glasses or contact lenses should be thoroughly discussed with your eye doctor to make the best decision for you. Even if you’re considering non-prescription readers with aspheric lenses, it's worth it to mention the change to your doctor.

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Arbitrageurs aim to profit from price differences in the market, which arise due to market imperfections. A price quoted in futures and options trading includes the current price and cost of carry, along with an underlying assumption that a strike price matches the contractual price. Any price difference arises from carrying the underlying security to the future date, known as the cost of carry.

Your eye shape is unique to you and you alone; this means that your lenses, whether aspheric prescription or non-prescription, must be customized to your unique eye shape. An experienced optometrist can assess your vision needs and recommend the most appropriate and flattering lenses for you. Get in touch with our team today to discuss your interest in aspheric lenses!

Arbitrageurs essentially remove all price differences arising from imperfect trading conditions, as they change the demand and supply patterns to arrive at equilibrium.

While futures contract holds the same rules for both buyers and sellers of a contract, an options derivative can be divided into two types. Individuals entering an options contract to sell a particular asset at a pre-asserted price on a future date can do so by signing a put option contract. Similarly, individuals aiming to purchase a particular asset in the future can enter into a call option to lock in the price for future exchange.

With the advancement of aspheric lens technology, we now have more glasses frame styles available to more people than ever, with significantly less bulging of the lens and a lightweight feel for comfortable wear. These advanced lenses are cut to a slimmer profile, with much flatter curves that are strategically shaped depending upon the wearer’s prescription. This slim profile means that the glasses frames can sit closer to the face for a much more natural, streamlined look. This is a big advancement for folks with especially high prescriptions. If you’re in the market for aspheric lenses, limited frame materials, shapes, and sizes are no longer an issue, either.

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Aspheric lenses are slimmer, flatter optical lenses compared to traditional prescription lenses. These lenses are available in both glasses and contacts, making more stylish options available to prescription lens wearers than ever.