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refractive

Examples

  • Definition of refractive in the Online Dictionary. Meaning of refractive. Pronunciation of refractive. Translations of refractive. refractive synonyms, refractive antonyms. Information about refractive in the free online English dictionary and. — “refractive - definition of refractive by the Free Online”,
  • For patients undergoing refractive surgery with surface ablation techniques, postoperative examination, including slit-lamp biomicroscopy of the cornea, is advisable on the day following surgery and every 2 to 3 days thereafter until the epithelium is healed. [ A:III]. — “Refractive errors and refractive surgery”, guideline.gov
  • Information for doctors and patients regarding refractive surgery. Includes benefits, risks, alternatives, and more. — “Refractive Source”,
  • Millions of Americans have had corneal refractive surgery. As these people age, they are beginning to develop cataracts. These are patients who previously took steps to reduce the use of optical devices, so their postoperative cataract surgery. — “Review of Optometry > When Cataract Develops Long After LASIK”,
  • Refractive surgery is an eye care specialty for reducing Refractive Error and Presbyopia without using glasses or contact lenses. The term, "refractive surgery" refers to several procedures, including LASIK, PRK, Intacs, LTK, AK, RK, and. — “Refractive Surgery”,
  • Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. Next Word in the Dictionary: refractive index. — “Refractive - Definition and More from the Free Merriam”, merriam-
  • I Know Why Refractive Surgeons Wear Glasses is a consumer health site dedicated to educating consumers to the risks of refractive surgery procedures such as RK, PRK, and LASIK. — “I Know Why Refractive Surgeons Wear Glasses - EyeKnowWhy”,
  • A simple, mathematical description of refractive index is as follows: Hence, the refractive index of water is 1.33, meaning that light travels 1.33 times as fast in a vacuum as it does in water. — “Refractive index - Wikipedia, the free encyclopedia”,
  • Four common refractive errors are. Myopia, or nearsightedness - clear vision close up but blurry in the distance. Hyperopia, or farsightedness - clear vision in the distance but blurry close up. Presbyopia - inability to focus close up as a result of aging. — “Refractive Errors: MedlinePlus”, nlm.nih.gov
  • Refractive Dialer is the first and only multi-line dialing system with zero delay. Using Refractive Dialer will dramatically increase the number of live people your agents speak to. — “Refractive Dialer”,
  • The idea of offering surgical refractive correction to some pediatric patients has received increased attention in the ophthalmic community, but. — “Questions remain about use of refractive surgery in pediatric”,
  • Refractive Eyecare® is a publication for ophthalmologists and optometrists that provides practical, "how-to" information on growing an eyecare practice. — “Refractive EyeCare: How to Grow an Eye Care Practice”,
  • During refractive cataract surgery, the cataract is removed and the natural lens is replaced with a special lens to eliminate your glasses. Read more. — “Refractive Cataract Surgery - Eliminate Cataracts and Your”,
  • The official bimonthly publication of the International Society of Refractive Surgery. — “Journal of Refractive Surgery”,
  • Clinical and practice management information on cataract and refractive surgery. — “American Society of Cataract and Refractive Surgery”,
  • The goal of refractive surgery is to reduce or eliminate nearsightedness (myopia), astigmatism, or farsightedness (hyperopia) and lessen a person's dependence on eyeglasses and contact lenses. There are several refractive procedures being performed today. — “Encyclopedia - Refractive Surgery”,
  • Refractive Eye Disorders. Many people are affected with at least some form of refractive eye disorder at some point of life that prevents them to see clearly. Accommodation is the ability of an eye to change it's refractive power. — “Refractive Eye Disorders”,
  • Without a doubt, refractive surgery has revolutionized vision correction. Yet one aspect has continued to frustrate James J. Salz, MD, over the years: High myopes, the "people who need LASIK the most," are at highest risk for problems with this surgery. — “Refractive:Clinical Update”,
  • refractive index Measure of the bending or refraction of a beam of light on entering a denser medium (the ratio between the sine of the angle of. — “Refractive index: Definition from ”,
  • Refractive surgery encompasses a variety of technologies and procedures for correcting several common eye conditions such as myopia (nearsightedness) and hyperopia (farsightedness). The surgery changes the focusing characteristics of the eye to achieve a clearer image. — “Refractive Surgery - General Information”,
  • In many of these cases there is some other sort of visual limitation besides refractive error (e.g., corneal warpage from contact lens wear, keratoconus of the cornea, or some other disease state) and/or expectations for a refractive surgical procedure are too high. — “Eye surgery options”,

Videos

  • Advances in refractive surgery over the last 25 years Located in London's Harley Street, AVC is he UK's leading independent corrective eye clinic, specialising in laser eye correction, and a range of specialist treatments. With world-renowned surgeons and the highest quality patient care, AVC believe that you won't find better treatment anywhere else
  • Piggyback IOL Implantation to correct Refractive Surprise Dr Suresh K Pandey.mpg In this video, Dr Suresh K Pandey and Dr Vidushi Sharma demonstrate management of refractive surprise (minus 5 diopter, operated elsewhere) by implantation a minus 6 diopter Sensar IOL in ciliary suclus of 48 years old male at Suvi Eye Institute and Research Center, Kota, India. First reported by Johnny Gayton, MD, in 1993, piggyback placement of an IOL can be a successful strategy for correcting residual refractive error. Placing an additional IOL in the eye is an effective way to correct a residual refractive error, particularly high degrees of refractive surprise. With the original IOL placed in the capsular bag, the piggyback IOL is traditionally placed in the ciliary sulcus to avoid interenticular opacity. These IOLs can be implanted during cataract surgery or clear lens extraction and IOL insertion (primary piggyback implantation) or as a secondary procedure following the initial IOL implantation (secondary piggyback implantation as in this case). IOL Power calculation for piggyback IOLs is based on residual refractive error and can achieve highly accurate outcomes. For minus (myopic) refractions, multiply the spherical equivalent by 1.2 to determine the piggyback IOL power. For plus (hyperopic) refractions, multiply the spherical equivalent by 1.5 to determine the piggyback IOL power. Complications, of the procedure include interlenticular opacification (ILO), pigment dispersion, iridocy***is, glaucoma, and hyphema, can be avoided with proper preoperative planning ...
  • 067 mib refraction index
  • Cataract and Refractive Center of Ohio Alice Epitropoulos, MD
  • Refraction Through a Prism Check us out at Prism is a transparent optical element with flat, polished surfaces that refract light. The exact angles between the surfaces depend on the application. The traditional geometrical shape is that of a triangular prism with a triangular base and rectangular sides, and in colloquial use "prism" usually refers to this type. Some types of optical prism are not in fact in the shape of geometric prisms. Prisms are typically made out of glass, but can be made from any material that is transparent to the wavelengths for which they are designed. A prism can be used to break light up into its constituent spectral colors (the colors of the rainbow). Prisms can also be used to reflect light, or to split light into components with different polarizations. Light changes speed as it moves from one medium to another (for example, from air into the glass of the prism). This speed change causes the light to be refracted and to enter the new medium at a different angle (Huygens principle). The degree of bending of the light's path depends on the angle that the incident beam of light makes with the surface, and on the ratio between the refractive indices of the two media (Snell's law). The refractive index of many materials (such as glass) varies with the wavelength or color of the light used, a phenomenon known as dispersion. This causes light of different colors to be refracted differently and to leave the prism at different angles, creating an effect ...
  • Experimental Refractive Light Eye Surgery in Victoria VICTORIA - There is a new developement in light adjustable lens implants for your eyes. Patients of a Victoria surgeon say they are seeing brighter colours, more distinct hues, and faces in focus like never before. The new technology is still being studied but will hit the market soon. Follow Erin Glazier on Twitter -
  • Index of Refraction: Disappearing Glass and Disappearing Gel, 2010 UW-Madison Chemistry Prof. Bassam Z. Shakhashiri does a science demonstraiton during the 41st annual "Once Upon a Christmas Cheery, In the Lab of Shakhashiri" in December of 2010. Bassam makes glass and gels disappear in demos from his newest book, Chemical Demonstrations: A Handbook for Teachers of Chemistry, Volume 5, available February 2011 from the University of Wisconsin Press. See for more information.
  • Index of REFRACTION
  • Cataract and Refractive Center of Ohio Alice Epitropoulos, MD
  • REFRACTIVE LENS EXCHANGE WITH TECNIS MF IOL DR SURESH K PANDEY SUVI EYE INSTITUTE KOTA INDIA In this video, Dr Suresh K Pandey demonstrates non-dominant hand phacoemulsification with Sovereign WhiteStar ICE technology to perform refractive lens exchange and implantation of Tecnis Multifocal IOL in a 45 years old female at Suvi Eye Institute, Kota, Rajasthan, India. Elimination/reduction of preexisting corneal astigmatism is absolutely necessary to get successful visual outcome after implantation of Multifocal IOL. In this case of unilateral high myopia (minus 14 D Sph with minus 0.75 D Cylinder) refractive lens exchange of the right eye was performed and Tecnis Multifocal IOL of 9.50 Diopter was implanted. Based on keratometry, phaco incision was planned at steep axis (30 degree). As Dr Suresh Pandey is left handed surgeon, he decided to perform phacoemulsification surgery using his right hand under topical anesthesia. About Dr Suresh K Pandey- A medical graduate of Rani Durgawati University, Medical College, Jabalpur, MP, India; Dr. Pandey completed his residency in Ophthalmology from prestigious Postgraduate Institute of Medical Education and Research, Chandigarh, India. He worked in University of Utah, USA & University of Sydney, Australia from1998 to 2006. Dr. Pandey returned to India in 2006 to establishSuVi Eye Institute and Research Center at Kota, Rajasthan, India (). Dr. Pandey has presented more than 150 scientific papers in various international ophthalmological meetings and authored more than 100 scientific papers/communications, 50 ...
  • Snell's law of Refraction An experimental demonstration of Snell's law of Refraction. Light is shone through a glass block at various angles. A calibrated paper template allows the angles of incidence and refraction to be determined. (The angle of incidence is also spoken out during the experiment).
  • TOP DOCS OF DFW - Dr. Ivan Bank - Post Refractive Surgery As seen on the television program, "Top Docs of DFW" Dr. Ivan B. Bank, OD, FAAO, Optometrist, discusses a patient condition Keratoconus and treatment with ClearKone contacts. Synergeyes ClearKone: Utilizing revolutionary hybrid technology, SynergEyes® has developed a family of lenses that provide patients with the all-day comfort of soft contact lenses and the excellent visual clarity of rigid gas permeable lenses. Our contact lenses for keratoconus truly offer the best of both worlds. These features and benefits are not available in any other product on the market for the treatment of keratoconus. We offer two different lens designs, SynergEyes® KC, and ClearKone®, to address all stages of keratoconus. The staff and doctors at Insight will provide their patients with the highest level of personalized care and utilize state-of-the-art technology in vision care services and products. The practice strives for excellence by continually educating themselves so they may better serve their patients; always attempting to excel beyond all patient expectations in the diagnosis and treatment of eye disease, the specialty of contact lens care, innovative eyewear, and ophthalmic specialty prescription lenses. Helping their patients is always being the priority. They serve them promptly with undivided attention. The doctors are available 24 hours a day, every day of the year, to meet the needs of patients in the event of an ocular emergency. They emphasize the need and reasons for ...
  • Physics with MicroStation Refraction of Light - I Created in MicroStation MicroStation for basic, intuitive understanding of Refraction of light and related terms and concepts. Click on the time stamp to go to a topic- 0 Terms: Incident Ray, Refracted Ray, Normal 0:55 Terms: Angles of incidence and refraction 1:10 Terms: Refractive Index 1:48 Interactivity: changing incedent ray 2:12 Optical density 2: 35 Ray from denser to rarer medium 3:00 Critical angle 3:14 Total Internal Reflection 3:35 Snell's window 4:15 Application: Optical fibers, Diamonds, double Rainbow
  • Refractive Lens Exchange For Hyperopia Under Topical Anesthesia Dr Gimbel performs and narrates a refractive lens exchange on a hyperope under topical anesthesia; clear corneal incision and Arshinoff Soft Shell technique
  • Laser Eye Surgery Testimonials, Refractive Lens Exchange (RLE) Watch the testimonial videos of RLE (refractive lens exchange) surgery patient by our Eye Surgeon, Dr. Captain at the Eye Center Bangkok Hospital Phuket, Thailand.
  • REFRACTIVE ERRORS Over 120 million people in the United States wear eyeglasses or contact lenses to correct refractive errors, such as nearsightedness, farsightedness, or astigmatism. For more information visit our program
  • Refractive Lens Exchange with Piggyback IOL Dr Suresh K Pandey Suvi Eye.mpg In this video Dr Suresh K Pandey & Dr Vidushi Sharma, eye surgeons of SuVi Eye Institute & Research Center, Kota, Rajasthan, India () share pearls & stretegies to manage high hyperopia using refractive lens exchage with primary polypseudophakia (AcrySof Toric IOL in capsular bag & Monofocal IOL in sulcus). This 45 years old patient presented to us with refractive error of +16 D Sph. +1.50 D Cyl. @ 170 degree (BCVA 6/12, due to amblyopia). IOL power calculation using Holladay 2 formula was 36 Diopter. The postoperative refraction was +0.25 D Sph (BCVA 6/12). We have planned to implant AcrySof Toric IOL (30 Diopter, T3 model, maximum power available) in the capsular bag and compansate 6 Diopter by implantation of a monofocal IOL (Flexifold) in the ciliary sulcus. While performing piggyback IOL implantation, the previous practice of stacking two acrylic lenses in the capsular bag has since been abandoned due to occasional problems with interlenticular opacification and reduced visual acuity. The residual IOL power originally calculated for placement in the capsular bag will need to be adjusted only if the IOL power of second IOL (intended for ciliary sulcus) is more than 8 Diopter. It is recommended that different IOL materials, in different locations, be used for the creation of a polypseudophakia lens pair. Though not shown in this video, for the ciliary sulcus lens, a large diameter, low profile, round edge, biconvex newer generation silicone IOL, such as ...
  • LV Prasad Eye Institute testing NETRA, MIT's Portable low cost mobile for refraction see for details
  • Refractive - Master Oogway A song by refractive and a video edited by refractive. all clips are taken from the film Kung Fu Panda. Thanks to Ollie for helping me with the samples and for the constructive criticism. hope you Enjoy :)
  • Refractive Lens Exchange Testimonial by a Clarivu™ Total Vision Correction Patient Clarivu™ Total Vision Correction Patient Maureen discusses her experience of refractive surgery and provides her review of this highly successful vision correction procedure.
  • CRT, CORNEAL REFRACTIVE THERAPY WITH DR. BRIAN BERLINER Dr. Brian Berliner and Associates CRT, Corneal Refractive Therapy
  • Refractive Lens Exchange with Multifocal & Accommodative IOLs Dr Suresh Pandey, Suvi Eye India In this video Dr Suresh K Pandey and Dr Vidushi Sharma, eye surgeons fromSuvi Eye Institute & Research Center, Kota, India, share pearls and pitfall of Refractive Lens Exchange (RLE) using Multifocal and Accommodative IOLs. RLE is the fastest growing type of refractive surgery in the US, with the growth rate doubling annually since 2005. Such growth is due largely to presbyopia correcting IOLs meeting the lifestyle needs of the patient. More early or pre-presbyopic patients will likely consider this technology as a "onestop" option to address their lifestyle needs. RLE: a win-win-win-win proposition: For patients -- by addressing their visual needs; For physicians -- due to decreased intrusion from government and private insurances; For ophthalmic Industry -- through return on investment translating into further advances in technology; For healthcare Financing -- patients opting for RLE with multifocal IOLs will be pseudophakic as they enter Medicare coverage, saving the government a huge expenditure. About Dr Suresh K Pandey- A medical graduate of Rani Durgawati University, Medical College, Jabalpur, MP, India; Dr. Pandey completed his residency in Ophthalmology from prestigious Postgraduate Institute of Medical Education and Research, Chandigarh, India. He worked in University of Utah, USA & University of Sydney, Australia from1998 to 2006. Dr. Pandey returned to India in 2006 to establish SuVi Eye Institute and Research Center at Kota, Rajasthan, India ( ...
  • Advantages of Femtosecond Laser in refractive surgery Spokesperson from Abbott Medical Optics discusses the benefits of the Femtosecond Laser in laser eye surgery, particularly in creating the corneal flap. About Advanced VisionCare: Located in London's Harley Street, AVC is he UK's leading independent corrective eye clinic, specialising in laser eye correction, and a range of specialist treatments. With world-renowned surgeons and the highest quality patient care, AVC believe that you won't find better treatment anywhere else
  • Dis-satisfied patients after Refractive Surgery (Reasons & Managment) Refractive surgery (RS) is elective type of ophthalmic surgeries. It is used to correct the error of refraction in patients with normal eyeballs. Reasons of dissatisfaction are plenty and need special care (both pre & postoperatively).
  • Refractive Lens Exchange
  • IBI 11-13-00 Quandary about Index of Refraction Upload to 2011/06/10
  • Refractive lens exchange - Dr Sajid Ahmed hyderabad Clear lens extraction(CLE) for high myopia is a viable option since you have latest IOL technologies to replace crystalline lens with excellent out come. in this video i implanted sensor IOL(Amo) with optiedge technology. I have a series of 20 cases of CLE(Refractive lens exchange) with sensor IOl all of them improved over their best spectacle or CL corrected visual acuity and none of them had RD for about 3 years follow up period
  • ICEE - World Congress on Refractive Error, Durban Commitment 2010 Healthy communities and economies are at risk until the lack of vision care, a global health crisis, is addressed by governments, industry and communities, according to world leaders in vision health and development who met at the World Congress on Refractive Error in Durban, South Africa. The Durban Commitment 2010 -- Vision Health and Development; Enhancing our Commitment to the Durban Declaration on Refractive Error, is set to be delivered to governments and peak health care and development agencies worldwide in an attempt to raise awareness to the global shortfall in care.
  • AVC Dr. Helgason on Refractive Lens Exchange Dr Goran Helgason is a member of the AVC medical advisory board, and performs Implantable Contact Lens procedures, Lens Exchange procedures and Cataract Surgery with multifocal IOL Located in London's Harley Street, AVC is he UK's leading independent corrective eye clinic, specialising in laser eye correction, and a range of specialist treatments. With world-renowned surgeons and the highest quality patient care, AVC believe that you won't find better treatment anywhere else
  • Refractive Lens Exchange in Thailand (RLE) by eye specialist | Watch the testimonial videos of lens exchange surgery patient at the Eye Center Bangkok Hospital Phuket, surgery by Dr. Captain Wiriyaluppa.
  • Implantation of iDIFF Refractive Diffractive Multifocal IOL Dr Suresh K Pandey SuVi Eye India.mpg In this video Dr Suresh K Pandey & Dr Vidushi Sharma eye surgeon of Suvi Eye Institute & Research Center, Kota, Rajasthan India () share pearls for implantation of Refractive-Diffractive multifocal IOL (iDIFF) manufactured by Intra Ocular Care Pvt. Ltd, India. Most people experience a change in their vision during their 40s that requires them to wear glasses for reading. This change in a patient's lens is known as "presbyopia". Traditionally a monofocal Intra-Ocular Lens (IOL) replaces a cataract patient's crystalline lens and provides good distance vision, but reading glasses would be necessary for near vision. The advantage of the new iDIFF multifocal refracive-diffractive IOL (Intra Ocular Care Pvt Ltd India) is that it is helpful to deliver near vision, distant vision and everywhere inbetween. Multifocal lens implants are proving to be so successful that people without cataracts are having multifocal IOLs implanted as a vision correction procedure. Dr Vidushi Sharma, MD (AIIMS), FRCS, Dr Suresh K Pandey, MS (PGIMER), ASF (USA) Directors, SuVi Eye Institute & Research Centre, C 13 Talwandi, KOTA, RAJ., INDIA Ph: +(91) - 744- 2433575, +(91) 93514-12449 (mobile) E-mail:suvieye @ Website:
  • Refractive and Reflective Glass Field: After Effects, Cinema 4D A small cluster of glass blocks, with a hidden message that is only visible when seen directly through one of the blocks. An interesting system and idea that was fun to make. The words say "TheOrangeMoose" which is my psn, "transfer8" which is this account and "Sir Tree" which is a one of my designations. A great tutorial by Nick Campbell from Grey Scale Gorilla, learned some cool techniques. Im starting to get the hang of C4D now. Esh. The video is a lot better in 720p HD, so try that out. SFX from Pro Scores, by Video Copilot. Clip made by me. GSG's site:
  • Refractive Errors Video Myopia causes distant objects to appear blurred. Hyperopia causes close objects to appear blurred. Astigmatism can cause both close and distant objects to appear blurred. Presbyopia starts around middle age, when the eye's lens becomes less flexible and less able to focus on near objects. Learn more at .
  • Alcon WaveLight Refractive Suite Overview
  • Refraction Of Light Check us out at In optics, refraction occurs when light waves travel from a medium with a given refractive index to a medium with another at an angle. At the boundary between the media, the wave's phase velocity is altered, usually causing a change in direction. Its wavelength increases or decreases but its frequency remains constant. For example, a light ray will refract as it enters and leaves glass, assuming there is a change in refractive index. A ray traveling along the normal (perpendicular to the boundary) will change speed, but not direction. Refraction still occurs in this case. Understanding of this concept led to the invention of lenses and the refracting telescope. Refraction can be seen when looking into a bowl of water. Air has a refractive index of about 1.0003, and water has a refractive index of about 1.33. If a person looks at a straight object, such as a pencil or straw, which is placed at a slant, partially in the water, the object appears to bend at the water's surface. This is due to the bending of light rays as they move from the water to the air. Once the rays reach the eye, the eye traces them back as straight lines (lines of sight). The lines of sight intersect at a higher position than where the actual rays originated. This causes the pencil to appear higher and the water to appear shallower than it really is. The depth that the water appears to be when viewed from above is known as the apparent depth. This is an important ...
  • Refractive Surgery News: Video Directory Male
  • Kate's Review of Refractive Surgery Clarivu™ Total Vision Correction Patient testimonials of refractive surgery provide an insight into the benefits of this effective vision correction procedure. Reviews of Clarivu Total Vision Correction refractive lens exchange can be found on .
  • Experiencing Refractive Eye Surgery Join Ann as she walks you through her recent refractive eye surgery at Davis Duehr Dean in Madison.
  • Refractive Surgery News Video Directory: Female
  • Elements of Refractive Cataract Surgery: ReSTOR with PCCC Specific elements of refractive cataract surgery are highlighted in this video and include precise CCC formation, curetting of the undersurface of the anterior capsule and creation of a PCCC to remove adherent plaque.
  • Real Time Bilateral LASIK Surgery with the Refractive Suite from Alcon WaveLight Real Time Bilateral LASIK Surgery with the Refractive Suite from Alcon WaveLight consisting FS200 and EX500 Dr. Arthur Cummings, Consultant Eye Surgeon Wellington Eye Clinic
  • Physics - Refraction Basics, Class X This lesson creates awareness about the phenomenon of refraction through real life examples. Animated ray diagrams provide an engaging mode of learning as the learner walks through laws of refraction, the concept of refractive index and Snell's law. The lesson also covers related concepts like critical angle, total internal refraction, and lateral and vertical shift due to refraction.