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Why is contact lens care important?

Many contact lens user are either ignorant or didn't do the right things when comes to caring contact lens. Depending on the type of lens you are wearing, there are many different options for cleaning and disinfecting your lenses. Like all synthetic materials, contact lenses are subject to a buildup of micro-organisms and deposits. If not removed, these deposits and absorbed materials can build up on the lens surface which over time may result in the reduction of comfort and vision as well as an increased risk of contamination.

This is why lenses need to be cared for on a regular basis using various types of solutions, which are not only compatible with the lens materials but also with the eye itself.

Why can't water be used for rinsing contact lenses?

Tap water contains chlorine, minerals and metal particles, which can damage both the lenses and the eye. Among other things, water contains organisms, which can lead to serious infections of the eye through microbial contamination. Home made saline, purified or distilled water does not disinfect contact lenses and should not be used for rinsing the lenses. Saline are manufacture in a controlled environment and invloves designated amount of recipes of ingredients. As such home made saline, purified water from home tap should not be used to rinse contact lens.

The Right Cleaning Solutions For You.

Some lens care solution allows your eyes to stay better protected and hence healthier. The moisturizing effect of the solutions locks in moisture and prevents lens dehydration for enhanced levels of lens comfort. Some peroxide-based lens care solution comes without the preservatives found in many all-in-one solutions. Peroxide provides unsurpassed disinfecting efficacy and cleaning for improved lens comfort. If you have sensitive eyes, you need to choose those that is suitable for people with sensitive eyes. Generally it can be used with gas permeable lenses, soft contact lenses and disposable contact lenses.

In short, you should choose a suitable solutions that will: 1. lubricates contact lenses and re-wets dry and irritated eyes.

2. Relief from dry and irritated eyes. Specially formulated to lubricate and moisten your lens to help relieve irritation from dirt, smoke and dryness.

3. Enhance lens movement for comfortable lens wear.

4. Formulated for sensitive eyes as it does not contain thimerosal or chlorhexidine, preservatives to which some people are sensitive.

5. Suitable for all types of contact lenses including silicone acrylate rigid gas permeable lenses.

6. Outstanding protein removal performance for all contact lenses. Triple action formula: removes proteins, prevents calcium deposits, kills germs. Excellent antimicrobial properties: proven to kill 99% of acanthamoeba spores.

7. Preservative and enzyme free.

You should adhere to 3 Important Things on contact lens care.

1. Cleaning and Disinfection

Cleaning and disinfecting is an important step to kill micro-organisms responsible for eye infections.

2. Storage

Contact lenses must be stored in approved saline solutions.

3. Re-wetting

Use as needed to alleviate symptoms of lens dryness. This is not an actual lens care step, but can be used for extra comfort.

How about the lens case?

The lens case itself must also be cleaned and replaced regularly. After inserting lenses, rinse out lens case with saline solution, leave open to dry.

Will medicated eye drops affect my contact lens?

Medicated eye drops often have preservatives, which can penetrate the lens structure. Lenses should always be removed before inserting drops, unless they are designed for contact lenses. Certain medications transform the tear film both qualitatively and quantitatively. This can lead to temporary or even permanent incompatibility of the lenses.

Antihistamines (for hay fever), high blood pressure medications, laxatives, hormone preparations (pills), sedatives, sleeping pills, acne and rheumatism preparations, and pregnancy can alter the tear film structure.

Nicotine can tint the lenses; alcohol leads to dry eye.

Summary

Depending on the type of lens you are wearing, there are many different options for cleaning and disinfecting your lenses. Some lenses, such as daily disposable lenses require little to no lens care - they are simply thrown away after each use. However, if you wear lenses that your eye care professional has recommended that you take out and re-insert into your eye, they should be cleaned and disinfected after each use. Proper care for your lenses can help your lenses stay clean and comfortable for you to wear. Your eye care professional can help you decide what lens care solutions are best for you.

If you experience any problems with your contact lenses, please remove your lenses and consult your eye care professional right away. Discomfort can be an early sign of a more serious complication, and early treatment can have a significant impact on overcoming problems.

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At What resolution our Eyes see, Megapixels, Frames per Second, read on...?

If our Vision were to be converted ito digital photography or a Video,
1) Wht is the Raw Resolution and megapixels our Eyes see at ?
2) How many Frams per Second
3) If one Frame of our Vision would be converted into a Digital photo, wht wud be the size of the file ?
4) If our eyes see at so high resolution, why can't we Zoom in, or must i say Like see some thing which is far very Clear, In more Detail ? Because in a Digital photo if when zoom in, we can see better if the Picture is of higher resolution.
5) By any Modification in the cells of the eyes, do u think in near future we are goin to get night vision if we want ?
6) why cannot a complete eye be transplanted from one person to another?
7) Suppose if we had black and white vision, wud u like it ?
8)if we cud see Ultra violet radiation or far infra red radiation, wht wud the colour be like?

~~~~~

1)The average human eye, in the fovea (the sweet spot) in bright light, can distinguish 1 arc minute (1 degree/60) in luminance (black/white) difference. About 2 arc minutes (1/30 degree) for a red/blue or other chrominance difference at roughly the same brightness.

If you sit 20" from monitor (I do), then your central vision can see two .006" black dots seperated by .006" of white. (your peripheral vision is nowhere near this good) A 19" monitor with 18" visible has a 14.4" horizontal viewable line. You could see about 2500 pixels across that screen, if they were black/white/black/white, and if your shadow mask allowed it, and if your convergence were good enough, etc. About 1250 colored dots.
2)Generally everyone agrees that it is not higher then 30 fps for the human eye.
3)The eye is not a single frame snapshot camera. It is more like a video stream. The eye moves rapidly in small angular amounts and continually updates the image in one's brain to "paint" the detail. We also have two eyes, and our brains combine the signals to increase the resolution further. We also typically move our eyes around the scene to gather more information. Because of these factors, the eye plus brain assembles a higher resolution image than possible with the number of photoreceptors in the retina. So the megapixel equivalent numbers below refer to the spatial detail in an image that would be required to show what the human eye could see when you view a scene.

Based on the above data for the resolution of the human eye, let's try a "small" example first. Consider a view in front of you that is 90 degrees by 90 degrees, like looking through an open window at a scene. The number of pixels would be
90 degrees * 60 arc-minutes/degree * 1/0.3 * 90 * 60 * 1/0.3 = 324,000,000 pixels (324 megapixels).
At any one moment, you actually do not perceive that many pixels, but your eye moves around the scene to see all the detail you want. But the human eye really sees a larger field of view, close to 180 degrees. Let's be conservative and use 120 degrees for the field of view. Then we would see
120 * 120 * 60 * 60 / (0.3 * 0.3) = 576 megapixels.
The full angle of human vision would require even more megapixels. This kind of image detail requires A large format camera to record.
4)because our brains are mostly wired for survival and part of that mechanism involves viewing many objects at once and distinguishing if they are a threat.
5)i dont think we will have that technology for at least 100 years so that does not qualify as the near future. and also when this is available, i would think that the government would make it only available to its own agencys.
6)the first successful human eye tranplant was completed on April 22, 1969
7)i know some color blind people, and they are all mentally derranged. im not being critical or mean, they just are seriously crazy. so no i dont think i would like it.
8)ultra violet light looks a desaturated (whiteish) blue. infra red vision would be like when the predator trys to kill danny glover.

hope that helps

La filosofia e l'arte di shinjo Ito

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Yasuhide Ito $58.94 High Quality Content by WIKIPEDIA articles Yasuhide Ito is a contemporary Japanese composer. Yasuhide Ito has earned much praise for his compositional endeavors. In all, Ito is credited for more than 130 musical works. This collection of musical works includes pieces for wind ensemble, orchestra, instrumental chamber ensembles, solo voice, various solo wind instruments, piano, solo percussion, solo string instruments, and various other instruments such as organ, cembalo, accordion, and harmonica. Ito is probably most well known as a composer of band music. Among his most popular works for wind ensemble are Gloriosa (Gururiyoza), which is among the most frequently played repertories in the world, and Festal Scenes, the piece which with Ito made his United States debut in 1987. This U.S. premiere took place during a joint convention between the American Band Association and the Japanese Band Association in Tennessee. Ito himself conducted the orchestra that premiered his piece. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 66 Publication Date: 2010/08/20 Language: English Dimensions: 6.00 x 9.02 x 0.16 inches

Yuna Ito $71.7 High Quality Content by WIKIPEDIA articles Yuna Ito (born September 20, 1983) is an American pop singersongwriter and actress who is active in Japan. She was born in Los Angeles and was raised in Hawaii. Ito made her musical debut with the single, Endless Story, which was used as one of the theme songs for the 2005 film Nana; she also starred in the film, portraying Reira Serizawa. In 2006, Ito reprised her role as Reira for the sequel of the film singing the theme song, Truth. In 2007, Ito released her debut album, Heart, which debuted atop the Oricon. In 2005, Ito was chosen to portray Reira Serizawa, the vocalist for rock band Trapnest in the film adaptation of Ai Yazawas popular manga series Nana. She released her debut single, Endless Story, under the name Reira Starring Yuna Ito ; the song was used as one of the theme songs for the film. Endless Story debuted on the Oricon chart at the #2 position. Following the release of Endless Story was her second single, Faith/Pureyes (2006), which debuted at #6 on the charts, failing to achieve the success that Endless Story had achieved. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 80 Publication Date: 2010/09/22 Language: English Dimensions: 6.00 x 9.02 x 0.19 inches

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