The Contact Lens When the contact lens was invented, the world of vision correction was altered forever. No longer were those people lacking perfect 20/20 vision forced to look any different than everyone else. Both discrete and revolutionary, the contact lens provided a brand new, viable, alternate solution to an age-old problem. After centuries of engineering and discovery the contact lens has evolved greatly. Presently contact lenses are made hard or soft, for daily or continuous wear, gas permeable, and even providing ultraviolet protection. A properly fitted pair of today’s discrete, convenient, versatile, and inexpensive contact lenses provide the best form of vision correction available in today’s market. The creation of the first wearable pair of eyeglasses is credited to Salvino D'Armate in Italy around the year 1284 (Bellis). Despite numerous improvements made to this original model, the eyeglasses remained an elementary piece of technology that provided the sole form of vision correction at that time. This was the case century after century. Leonardo da Vinci left us with the first sketches and descriptions of contact lenses in 1508 (CLC). The credit for developing the first corneal contact lens is given to Dr. Thomas Young in 1801. He created a one quarter inch long glass tube filled with water which had a microscope lens fitted on the end (Hartstein). It wasn’t until the late 19th century, however, that the first crude, but tolerable pair of contact lenses were introduced (CLC). Since this first medieval pair, the contact lens has been improved upon time after time. From the introduction of using plastics in contact lens production to the soft, gas permeable, daily wear, disposable lens... ... middle of paper ... ... they will continue to be the leader in the market for vision correction. Works Cited Bellis, Mary. “Glass, Mirrors, Eyeglasses, Sunglasses, Contact Lens.” About. PRIMEDIA. 4 Nov. 2004 bleyeglass.htm> CLC. “The History of Contact Lenses.” Contact Lens Council. 4 Nov. 2004 www.contactlenscouncil.org/history.htm> Davis, Robert A., Arnold Semel, and James E. Morris. “Clinical Evaluation of the Sportsoft Contact Lens.” Contact Lens Spectrum August (1993): 41-43. Gambino Eye Associates. “Non Surgical Alternative To Lasik Eye Surgery.” See Better Dallas. Dr. Mike Gambino. 9 Nov. 2004 lasikcomparison.html> Hartstein, Jack. Questions and answers on contact lens practice. Saint Louis: C.V. Mosby, 1968.
Vistakon should target 1-Day Acuvue to the part-time user segment (use lenses <5 days per week); these customers do not use contacts daily so would be less cost-sensitive. Furthermore, these individuals may not wear contacts daily due to discomfort or other ocular symptoms so may be willing to pay more for a high-quality lens. Also, these consumers are not specifically catered to at this time so Vistakon could gain new consumers in addition to minimizing cannibalization from other Vistakon products. 1-Day Acuvue may also appeal to contact lens dropouts (18% of eyeglass wearers), as it provides a more comfortable option that is low commitment.
Countless people with glasses or contacts may think, “Will I ever not need to wear these things to help me see?” And the answer is YES, because of a newer form of surgery called LASIK eye surgery. This surgery revives peoples sad glasses eyes and give you new happy eyes, that can help you see without a hunk of metal or a piece of plastic. LASIK eye surgery is another option to retain people's vision. In my speech I will talk about what LASIK eye surgery is, some of the risks with this surgery, and the aftermath of the surgery.
4. In the early 1670’s Anton van Leeuwenhook, a Dutch fabric-store owner, began to grind lenses as a hobby. He used handheld microscopes to examine materials such as pond water and blood.
I’ve worn glasses ever since I was in the 5th grade, up until now. I only had three pairs of eye glasses throughout the years. I really didn’t like wearing my glasses because they had glare on them when I took pictures. I felt left out because most of my friends didn’t wear glasses. Now that I’m older and mature, I decided that I should get contact lenses.
Contact lenses were first introduced during the Renaissance by Leonardo Da Vinci. Da Vinci was interested in the human eye as well as the human body. His purpose for contact lenses was not to help a person with vision problems, instead, Da Vinci was looking for a way he could manipulate the cornea’s power (Swaby, 2011). Through Da Vinci’s experiment, placing his face into a bowl filled with water, he discovered that he was able to see clearly for the first time (Siviglia, 2010). Da Vinci then created a “contact lens with a funnel on one side so water can be poured in...
2. There are patients that have ocular hypertension which is high pressure in the eyes. When this ocular hypertension is left untreated, it can lead to glaucoma. Usually when people have glaucoma they have to treat it with eye drop frequently. ForSight Vision5 is a product for people that they can be put into their eyes as a replacement for eye drops that is a therapy for glaucoma and other eye diseases. When he passed around the product I was very intrigued how that ring can fit in your eye. Currently this vision 5 is still in clinical trials but have a lot of investors interested in their product. This product releases the drug slowly in a period of months.
Intraocular lens implants (IOLs) are used in both refractive lens change and cataract surgery to substitute the natural lens of the eyes and correct for refractive errors. Over current years, many improvements in intraocular lenses have approved for the development of a wide-spectrum of lenses beyond the conventional monofocal lens implants. These improvements include presbyopia-correcting IOLs which provide a treatment option for presbyopic patients who do not succeed for laser refractive surgery and do not want to rely on reading glasses. Presbyopia-correcting lens can be differed into two broad types: multifocal IOLs and accommodative IOLs. Near, immediate and far distances. That's what the U.S. Food and Drug Administration's (FDA's) recent
Cataract has been around for centuries, the earliest documented case was a small statue that has white patch carved into its pupil in Cairo around 2457-2467 B.C.E. Couching was the earliest procedure to treat...
Prescription eyeglasses practically always cost much more than reading glasses, thanks to the detailed manufacturing process that creates them for the individual’s specific needs and makes them durable enough for daily use.
Cataracts is described as a clouding of the lens and is the main cause of blindness around the world (estimated 17 million people). It is estimated that with a ten percent dr...
Farsighted people need a lens system that will converge the rays so that as it enters the cornea, it will refract light rays onto the fovea.
This simple, none invasive procedure is able to provide individuals with a cheaper opportunity than surgery or for those who do not wish to have surgery (Barrett, 2009). The more vision therapy is used, the more well-known this therapy will become and perhaps one day children and adults alike may not be misdiagnosed with a disease they do not possess (Boden and Brodeur, 1999). Although there are two major types of vision therapy, each session will differ between optometrists and ophthalmologists, but nevertheless the benefits will remain the same. These lasting benefits will have a tremendous impact in the daily lives of anyone who completes the therapy (Vision Therapy FAQ). Finally, if it was not for vision therapy’s use of physical as well as mental exercises, human’s poor vision would interfere with daily tasks and society could not function as efficiently as it does now (Krebs, W. and Krebs, P.,
Currently, 168.5 million US citizens use glasses or contact lenses, which means 75% of the adult US population has seen an optometrist (topoptometricschool.com). That’s a vast amount of people who have encountered in some aspect with the business of optometry. Before plunging into the vast history is optometry, it is first important to understand exactly where it originated from. The word, optometry, comes from the Greek language. Opto which means sight and metron which means measure are the two Greek words where it originates from. (topoptometricschool.com) Many ancient Greek philosophers like Ptolemy, Euclid, and Aristophanes wrote about the use of a sort of extremely simplified version of vision enhancement, but it was not at all very practical in use (Goss, David A).
The invention of the magnifying glasses inspired artisans to develop a pair that patients would be able to put on in front of their eyes. The first spectacles that were invented are believed to be invented between 1268 and 1289 in Italy. The small discs glass came from the idea of two glass balls, then punching out circles with cold copper pipes. Each of the pieces of glass was ground on the back surface, and then they were framed and given a handle. Glasses were formed when they had started to put a divider in between each of the glasses.
While glasses may be easier to put on, contact lenses allow for ease of use throughout the day; they don't smudge, fall down, or break. Because of this, they are useful for anyone who plays sports, exercises, or performs moderate to high physical activity throughout the day. Furthermore, contacts aren't usually affected by weather; no more foggy lenses!