Posts Tagged ‘eye structures’

Multiple Layers of Eye Protection

WHEN we think of sunglasses, with their respect to eye protection, we think first of UV protection. The Suns’ Ultra Violet Rays have both positive and negative effects on the human condition. As an example of one of the positive effects of the suns’ rays is that they induce the production of Vitamin D in the human skin. This is easier for some people than drinking milk! Obviously, this is only a positive effect when the exposure is limited , with respect to the the sun bathers’ skin pigment, and at the proper time of day. Over, or improper exposure can cause sunburn and other skin maladies.

HOWEVER, it is the UV rays’ effects on the eyes that concerns us. According to Wikipedia, when the eyes are exposed to excessive amounts of UV light, eye structures such as the retina, cornea, and lens can be damaged. WIKIPEDIA further states “Protective eyewear is beneficial to those who might be exposed to UV radiation, particularly short wave UV’s. Mountaineers are exposed to higher than ordinary UV radiation, both because there is a loss of atmospheric filtering, and because of reflection from snow and ice.”

MOST Important to this discussion of eye protection is the following information from Wikipedia. “Ordinary untreated eyeglasses give some protection. Most plastic lenses give more protection than glass lenses, because glass is transparent to UVA, and the common acrylic plastic used for lenses is less so. Some plastic lens materials, such as POLYCARBONATE, inherently block most UV. There are protective treatments available for eye glass lenses that need it, which give better protection. BUT, even a treatment that Completely Blocks UV, Will Not Protect the Eye from Light that Arrives Around the Lens.”

So POLYCARBONATE lenses seem to be a natural solution to eye protection from UV rays. IN particular, the Dry Eye series of polycarbonate,polarized, sunglasses, by Wiley X Co., give even more protection. The Dry Eye Series, also known as Climate Control Sunglasses have a removable inner Facial Cavity Seal(tm). This comfortable, ergonomically designed foam seal fits the Universal Adult Face. The Dry Eye Series of Sunglasses, with Polarized Polycarbonate Lenses give the eyes multiple layers of protection in the following ways:

1-The Facial Cavity Seal blocks out harmful UV Rays from the sides, as well as the top and bottom of the sunglasses.

2- The Facial Cavity Seal blocks out wind which can cause eye strain and dry out the eyes. This Can cause symptoms of Dry Eye Syndrome, particularly in older adults.

3-The Facial Cavity Seal has a patented top down(tm) ventilation system, which keeps the eyes cool and comfortable, while keeping the lenses fog free.

4- The Polarized, Polycarbonate lenses block out, not only 100% of Harmful UV rays, but also contain 99.9% Polarization, which virtually eliminates harmful glare, resulting in clear, sharp, unstrained vision.

5- The Facial Cavity Seal also blocks out airborne debris, such as sand and pollen.

6- Last, But Not Least, the patented(tm), State of The Art, Polycarbonate,Polarized Lens surpasses ANSI Z87.1-2003 High Velocity and Ballistic Safety Standards, and are worn by many of US Military personnel in the most Extreme Hazardous Conditions. They are virtually in a word, (Shatterproof).

When All of the above stated features are combined with various, stylish,wrap around,functional, durable, frames that are virtually indestructible the result is a pair of versatile protective sunglasses with Multiple Layers of Eye Protection.

James zay is the CE?O and head of research at Zioty Marketing Unlimited, Inc., and lives in Florida, where he is an avid surfer, fisherman, and golfer and has recently developed a website for sunglasses with active, outdoor people in mind. www.protectionsunglasses.com

Article Source:http://www.articlesbase.com/vision-articles/multiple-layers-of-eye-protection-1364821.html

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Lasik Eye Surgery: Before & After Lasik Eye Operation

Before laser eye surgery, an interview is carried out to determine your personal suitability for eye surgery and to determine which type of operation may suit you and give an idea of the likely results. The next stage is to carry out a thorough eye test to determine a current up to date eye prescription and to take precise measurements of the eye structures.
It is normally recommended that a friend for this examination accompanies you as part of procedure involves using eye drops which dilate your pupil and blur your vision for upto 18 hours. Also it is advised to carry a pair of sunglasses on this day,as bright lights and dilated pupils can cause discomfort. If you normally wear contact lenses these can affect the corneal curvature and consequently it is necessary if you wear soft lenses to discontinue wear for at least one week prior to,and on the day of consultation, and with hard and gas permeable lenses to discontinue wear at least four weeks prior to and on the consultation day. Normally you need to complete a general health questionaire.You are then normally given a complete eye examination. Based on the result of these examinations your eye surgeon will advise you about the most suitable procedure for you,discuss the risks and also the alternatives. You also have the opportunity to ask any further questions you may have.
You can then decide whether or not to proceed to a surgical appointment.The advantages resulting from laser eye surgery are ability to see immediately on waking up, no more fumbling for your glasses in the dark, not having to wear glasses or contact lenses saving time and lots of money on opticians visits as well as trouble in maintenance and upkeep, improved self confidence in appearence (hopefully!), easier participation in sports leading to an overall improvement in feeling of personal well being. Most of the patients, who undergo laser eye surgery claim that they are satisfied with procedure and it has improved the quality of their life significantly and often state that they regret not having it sooner.
Lasik eye surgery is a laser surgery procedure for vision correction.The technique involves using a laser which is controlled by a computer to reshape the front surface of the eye(cornea). As with all surgery a pre-op consultation is required to ascertain the best eye surgery for the individual.In normal vision light enters the eye and is bent by the cornea and focussed to produce a sharp image on the back of the eye the retina. When a person has a refractive/visual error like short or long sight the light is bent such that a blurred image is produced.
Lasik eye surgery can be used to correct short sight, long sight and stigmatism (correct spelling astigmatism).Older patients who have presbyopia/age related near vision problems cannot have their vision improved with this procedure. The cornea has an alcohol solution applied to help lift the epithelial flap which is then cut(a fine layer about 50 microns thick ) with a Trephine blade (ALSO CAN BE CUT WITH A LASER BUT AGAIN IT IS A SIMILAR PROCEDURE ) , but not completely removed and remains hinged on one side allowing it to be replaced inthe same position. The surgeon raises the flap, and an excimer laser shapes the the cornea to the dimensions determined at the pre op consultation.The eye surgeon replaces the epithelial corneal flap, within minutes, natural forces hold it in situ, and the eye surgery is finished.The surgery as with LASIK takes approximately 15 mins each eye. However recovery normally takes a bit longer approximately one week and there is usually some discomfort for the next 48 hours.
This is just a general outline of the what happens after laser eye surgery procedures following refractive surgery (as there are wide variations depending on individual needs and surgery techniques).Patients are normally provided with antibiotic eye medication and lubricating eye drops to be used in the days immediately after surgery. It is common and good procedure for the eye surgeon who performed your operation to exam your eyes the day immediately after any eye surgery. Further appointments are then generally advised at the desired intervals. In the first few days and hours after surgery it is important to refrain from touching or rubbing the eyes and to try and rest as much as possible and to use any medication prescribed.Protective eye shields are normally provided to prevent rubbing of eye during the night whilst sleeping.Within 3-4 days most normal day to day activities like housework,driving and shopping can be resumed. After 2-3 weeks Most sporting activities can be resumed ,however hard contact activities such as boxing,football martial arts are best left for 3 months or more to ensure the best chance of full recovery.Following the post operation laser eye surgery aftercare program advised by your eye surgeon is very important in the overall.
Dr. Ajay Khanna who heads the Refractive Surgery & Vitreo Retinal Services at Dr. Om Parkash Eye Institute India has been performing Laser correction for specs since 1997.Dr. Ajay Khanna has been the earlier ones in the country to start with Thin Flap Lasik to treat patients with high myopia & thin corneas. This eye hospital was the first in the country to use for laser correction of specs, the state-of-the-art, Customized Lasik using NAVEX Quest -NIDEK CX III with Pentacam and OPD Scan.

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Lasik Eye Surgery: Before and After Lasik Eye Operation

Before laser eye surgery, an inteview is carried out to determine your personal suitability for eye surgery and to determine which type of operation may suit you and give an idea of the likely results.The next stage is to carry out a thorough eye test to determine a current up to date eye prescription and to take precise measurements of the eye structures. It is normally recommended that you are accompanied by a friend for this examination as part of procedure involves using eye drops which dilate your pupil and blur your vision for upto 18 hours. Also it is advised to carry a pair of sunglasses on this day,as bright lights and dilated pupils can cause discomfort. If you normally wear contact lenses these can affect the corneal curvature and consequently it is necessary if you wear soft lenses to discontinue wear for at least one week prior to,and on the day of consultation,and with hard and gas permeable lenses to discontinue wear at least four weeks prior to and on the consultation day.Normally you need to complete a general health questionaire.You are then normally given a complete eye examination. Based on the result of these examinations your eye surgeon will advise you about the most suitable procedure for you,discuss the risks and also the alternatives.You also have the opportunity to ask any further questions you may have. Visit http://www.accuratesight.com for more information and answers to your queries. You can then decide whether or not to proceed to a surgical appointment.The advantages resulting from laser eye surgery are ability to see immediately on waking up, no more fumbling for your glasses in the dark, not having to wear glasses or contact lenses saving time and lots of money on opticians visits as well as trouble in maintenance and upkeep, improved self confidence in appearence (hopefully!), easier participation in sports leading to an overall improvement in feeling of personal well being. Most of the patients, who undergo laser eye surgery claim that they are satisfied with procedure and it has improved the quality of their life significantly and often state that they regret not having it sooner. Lasik eye surgery is a laser surgery procedure for vision correction.The technique involves using a laser which is controlled by a computer to reshape the front surface of the eye(cornea). As with all surgery a pre-op consultation is required to ascertain the best eye surgery for the individual.In normal vision light enters the eye and is bent by the cornea and focussed to produce a sharp image on the back of the eye the retina. When a person has a refractive/visual error like short or long sight the light is bent such that a blurred image is produced. Lasik eye surgery can be used to correct short sight, long sight and stigmatism (correct spelling astigmatism).Older patients who have presbyopia/age related near vision problems cannot have their vision improved with this procedure. The cornea has an alcohol solution applied to help lift the epithelial flap which is then cut(a fine layer about 50 microns thick ) with a Trephine blade (ALSO CAN BE CUT WITH A LASER BUT AGAIN IT IS A SIMILAR PROCEDURE ) , but not completely removed and remains hinged on one side allowing it to be replaced inthe same position. The surgeon raises the flap, and an excimer laser shapes the the cornea to the dimensions determined at the pre op consultation.The eye surgeon replaces the epithelial corneal flap, within minutes, natural forces hold it in situ, and the eye surgery is finished.The surgery as with LASIK takes approximately 15 mins each eye. However recovery normally takes a bit longer approximately one week and there is usually some discomfort for the next 48 hours. This is just a general outline of the what happens after laser eye surgery procedures following refractive surgery (as there are wide variations depending on individual needs and surgery techniques).Patients are normally provided with antibiotic eye medication and lubricating eye drops to be used in the days immediately after surgery. It is common and good procedure for the eye surgeon who performed your operation to exam your eyes the day immediately after any eye surgery. Further appointments are then generally advised at the desired intervals. In the first few days and hours after surgery it is important to refrain from touching or rubbing the eyes and to try and rest as much as possible and to use any medication prescribed.Protective eye shields are normally provided to prevent rubbing of eye during the night whilst sleeping.Within 3-4 days most normal day to day activities like housework,driving and shopping can be resumed. After 2-3 weeks Most sporting activities can be resumed ,however hard contact activities such as boxing,football martial arts are best left for 3 months or more to ensure the best chance of full recovery.Following the post operation laser eye surgery aftercare program advised by your eye surgeon is very important in the overall. Dr. Ajay Khanna who heads the Refractive Surgery & Vitreo Retinal Services at Dr. Om Parkash Eye Institute India has been performing Laser correction for specs since 1997.Dr. Ajay Khanna has been the earlier ones in the country to start with Thin Flap Lasik to treat patients with high myopia & thin corneas. This eye hospital was the first in the country to use for laser correction of specs, the state-of-the-art, Customized Lasik using NAVEX Quest -NIDEK CX III with Pentacam and OPD Scan. Dr. Om Parkash Eye Institute 117-A, The Mall, Amritsar-143001 (Punjab) INDIA Tel : +91-183-2221128, 2221132, 6531128, 6541132 Mob: +91-98158-15888 Fax: 0091-183-2220910

Before laser eye surgery, an inteview is carried out to determine your personal suitability for eye surgery and to determine which type of operation may suit you and give an idea of the likely results.The next stage is to carry out a thorough eye test to determine a current up to date eye prescription and to take precise measurements of the eye structures.

It is normally recommended that you are accompanied by a friend for this examination as part of procedure involves using eye drops which dilate your pupil and blur your vision for upto 18 hours. Also it is advised to carry a pair of sunglasses on this day,as bright lights and dilated pupils can cause discomfort. If you normally wear contact lenses these can affect the corneal curvature and consequently it is necessary if you wear soft lenses to discontinue wear for at least one week prior to,and on the day of consultation,and with hard and gas permeable lenses to discontinue wear at least four weeks prior to and on the consultation day.Normally you need to complete a general health questionaire.You are then normally given a complete eye examination. Based on the result of these examinations your eye surgeon will advise you about the most suitable procedure for you,discuss the risks and also the alternatives.You also have the opportunity to ask any further questions you may have. Visit http://www.accuratesight.com for more information and answers to your queries.

You can then decide whether or not to proceed to a surgical appointment.The advantages resulting from laser eye surgery are ability to see immediately on waking up, no more fumbling for your glasses in the dark, not having to wear glasses or contact lenses saving time and lots of money on opticians visits as well as trouble in maintenance and upkeep, improved self confidence in appearence (hopefully!), easier participation in sports leading to an overall improvement in feeling of personal well being. Most of the patients, who undergo laser eye surgery claim that they are satisfied with procedure and it has improved the quality of their life significantly and often state that they regret not having it sooner.

Lasik eye surgery is a laser surgery procedure for vision correction.The technique involves using a laser which is controlled by a computer to reshape the front surface of the eye(cornea). As with all surgery a pre-op consultation is required to ascertain the best eye surgery for the individual.In normal vision light enters the eye and is bent by the cornea and focussed to produce a sharp image on the back of the eye the retina. When a person has a refractive/visual error like short or long sight the light is bent such that a blurred image is produced.

Lasik eye surgery can be used to correct short sight, long sight and stigmatism (correct spelling astigmatism).Older patients who have presbyopia/age related near vision problems cannot have their vision improved with this procedure. The cornea has an alcohol solution applied to help lift the epithelial flap which is then cut(a fine layer about 50 microns thick ) with a Trephine blade (ALSO CAN BE CUT WITH A LASER BUT AGAIN IT IS A SIMILAR PROCEDURE ) , but not completely removed and remains hinged on one side allowing it to be replaced inthe same position. The surgeon raises the flap, and an excimer laser shapes the the cornea to the dimensions determined at the pre op consultation.The eye surgeon replaces the epithelial corneal flap, within minutes, natural forces hold it in situ, and the eye surgery is finished.The surgery as with LASIK takes approximately 15 mins each eye. However recovery normally takes a bit longer approximately one week and there is usually some discomfort for the next 48 hours.

This is just a general outline of the what happens after laser eye surgery procedures following refractive surgery (as there are wide variations depending on individual needs and surgery techniques).Patients are normally provided with antibiotic eye medication and lubricating eye drops to be used in the days immediately after surgery. It is common and good procedure for the eye surgeon who performed your operation to exam your eyes the day immediately after any eye surgery. Further appointments are then generally advised at the desired intervals. In the first few days and hours after surgery it is important to refrain from touching or rubbing the eyes and to try and rest as much as possible and to use any medication prescribed.Protective eye shields are normally provided to prevent rubbing of eye during the night whilst sleeping.Within 3-4 days most normal day to day activities like housework,driving and shopping can be resumed. After 2-3 weeks Most sporting activities can be resumed ,however hard contact activities such as boxing,football martial arts are best left for 3 months or more to ensure the best chance of full recovery.Following the post operation laser eye surgery aftercare program advised by your eye surgeon is very important in the overall.

editor, writer, http://www.accuratesight.com

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5 Lasers Commonly Used in Ophthalmology

When in 1946 a German ophthalmologist named Gerd Meyer-Schwickerath used the focused light beam from a xenon arc lamp to perform a retinal coagulation on a human eye, his procedure completely revolutionized the world of ophthalmology. Light is noninvasive when it comes to reaching internal eye structures. That’s why, when Theodore Maiman tested the first successful laser in 1960, the optometry industry quickly began to research and develop ways of using this new technology. The lasers used in optometry today are incredibly precise and sophisticated. Computer software has made them especially powerful and accurate. Here are five of the most commonly used lasers in the field.

Femtosecond laser

The microkeratome blade is an uber-precise mechanical shaver that cuts a thin flap of exterior cornea during laser surgery. The femtosecond laser performs the same task as the microkeratome blade, but without the risks inherent. All-laser surgery minimizes healing period and reduces post-surgical discomfort.

Nd: YAG laser

A solid state laser, the YAG laser is one of the most commonly used lasers in optometry and in other medical procedures as well. Its typical wavelength is around 1054 mm and it can be used in pulse as well as continuous mode. Cataract surgery and peripheral iridotomy use YAG lasers. At higher frequency, the laser can be used for photocoagulation.

Krypton laser

Krypton lasers are a type of gas laser that employ krypton ions as gain mediums. They are commonly used in the treatment of macular degeneration, a disease that often affects the elderly and results in a loss of one’s central field of vision due to retinal damage.

Excimer laser
The excimer laser is the most widely used laser in the field of ophthalmology. It is extremely precise and, rather than burn through matter, it creates enough energy to break the molecular bonds holding matter together, so that the tissue it targets literally disintegrates into the air without affecting the remaining eye tissue.  

Argon laser

Because it can be emitted at various different wavelengths in the ultraviolet spectrum, the argon laser is versatile in its uses. Discovered by laser technology pioneer William R. Bennett in the 1960s, it is commonly used in diabetic retinopathy, panretinal photocoagulation and open-angle glaucoma.

The history of ophthalmology has revolutionized since 1946, read about the ophthalmic equipment and the newest technology at Nidek.

Ryan Frank is a 23 year writer and blogger living in San Diego, CA

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