Introducing Jimmy Choo at Solstice

Jimmy Choo, synonymous with beautiful and sexy shoes, is introducing a new collection of glamorous and sophisticated sunglasses. The iconic appeal of the designs make these sunglasses irresistible with their tactile finishes, bold color combinations and signature Jimmy Choo detailing. The contemporary designs are inspired by the '70's and '80's with heightened sex appeal seen in all Jimmy Choo designs.
Experience the eye-catching collection now at select Solstice Sunglass Boutiques.

Destin

Henry JULLIEN collection Homme
With its new DESTIN collection, Henry JULLIEN has decided to charm the active and modern man.
This metal and plastic model exists in 3 temple finishing touches: carbon, crystal and tortoise, and 5 front colours for a trendy look with black or khaki, or a more classical look with gold.

Évasion

Henry JULLIEN collection 2008
Henry JULLIEN presents EVASION, its new rimless collection in stainless steel.
Thanks to its many colours, this light model with a young and dynamic aspect will suit women who like matching their frame with their mood!
Contact: SAS Henry Jullien
Tél. 03 84 35 88 16
E-mail: direction@henry-jullien.com
www.henry-jullien.com

Rudy Project conquers South Pole with Zyon and Kalybro

Once again Rudy Project has overcome all obstacles and has achieved a truly memorable feat: the conquest of the South Pole.
Zyon Hi-Altitude glasses and Kalybro goggles by Rudy Project were chosen for the expedition that took 14 months to prepare. Starting off from Punta Arenas in Chile, the adventurous journey of 700 miles involved no less than 57 days in inhospitable Antarctica. The aim? A pioneering research project on how polar summer light affects vision, which could be useful in the development of new treatments for numerous vision disorders.
The new Hi-Altitude* lens was designed to provide protection from strong light and to transmit only 6% of light. It was specifically designed for activities at high altitudes, on glaciers and in all situations where reflected light is particularly annoying.
«We faced extreme conditions and our equipment played a crucial role” stated British optometrist and researcher Cameron Hudson, who took part in the expedition. Zyon glasses and the Kalybro goggles were a great help in coping with very tough weather conditions: hours and hours of strong winds, snow, very bright light, but also poor visibility and, of course, very low temperatures. Rudy Project provided us with optic support that performed exceptionally well: excellent ventilation, sharp images and materials of extraordinary quality and efficiency that demonstrated exceptional resistance to polar temperatures. But that’s not all. The special Hi-Altitude lenses protected our eyes from strong light thanks to the triple layers of anti-reflection coating. Extraordinary protection was also ensured by the attention to small details, such as Zyon’s side shields which protected our faces from injury normally caused by the cold, and the exclusive nose protector on the goggles which guaranteed easy breathing.»

Topcon releases new software for its fourier-domain oct/retinal camera

Topcon Medical Systems, Inc. has released Version 2.12 TrueMap Software for its 3D OCT-1000, the first Fourier-domain OCT combined with a color nonmydriatic retinal camera. The new software provides a three-dimensional OCT image of the retina and features PinPoint Registration that allows eyecare physicians to map the exact location of the OCT image with the fundus image. It allows the import of images from other instruments, giving the user the ability to view color fundus, 3D OCT and B Scan images on one screen. The new software version also includes an improved patient search and naming capability; a macro function that automatically registers, aligns and analyzes the results all at capture; a new four-layer retina module; and a new compare function for enhanced visualization of disease progression and comparison between patient visits. Fundus image enhancements and a new OCT AutoMosaic module allow the user to combine up to 16 images and automatically register them for a seamless wide-field view of the retina. All new 3D OCT-1000 software modules and upgrades are free of charge while under service contract.
For more information, go to: www.topconmedical.com/3doct.

Would you consider prescribing contact lenses to an 8-years-old?

In light of the findings from the recent Contact Lenses In Pediatrics (CLIP) Study—sponsored by VISTAKON®, a division of Johnson & Johnson Vision Care, Inc.—perhaps it’s time to consider it more often.
Researchers from three colleges of optometry concluded that eye care professionals should consider routinely offering contact lenses as a treatment option.
From now on, contact lenses could be a winning option for your younger patients.
To learn more about the CLIP Study at: www.ecp.acuvue.com

New from Mediakit!

The days are getting longer, the trees are budding, the temperature’s rising and we’re already dreaming of strolling down the beach. Make the most of your first sunbathing opportunities with Clark glasses and their old-school style. This elegant, shapely model with its wide endpieces shot into the front is available in two forms: square and pilot. In the prescription range, Twilight lets the sunshine in with its translucent colours. It’s enough to put a sparkle in your eye all year round!
So dash off www.eye-dc.com on your keyboard and head for the Mediakit to click your merry way through the latest from Eye’DC and XIT.
Fasten your seat belt for take off!

The Triangular Prism
by Professor Leandro Rhein

The rays are shown that pass through the prism in a plane perpendicular to the refracting edge of the prism, and the prism angle is assumed to be 60°, which is often the case. Snell's Law is applied at the two faces crossed by the ray, sin i = n sin r, n sin i' = sin r, which are connected by the relation r + i' = A, the prism angle. Together with the geometry of the prism, this is enough to determine the ray path.When the incident ray approaches the first side at grazing incidence, the angle of refraction inside the prism will be about 42° for n = 1.5. At the second face, the angle of incidence will be about 18° for a 60° prism, and the angle of refraction about 27.6°, making a total deviation of the ray direction of 57.6°. If we consider the ray reversed, then any smaller angle of incidence than 27.6° will result in total reflection at the other face. When the ray passes symmetrically through the prism, so that it is parallel to the base of an isosceles prism, the total deviation of the ray will be stationary with respect to a change in the angle of incidence, and must be a minimum. In this case the deviation is given by 2 sin-1[n sin(A/2)] - A. For a 60° prism with n = 1.5, this is 37.2°.
In the animation, the angle of incidence is varied from the smallest angle that does not produce total reflection at the other face up to 90°, passing through minimum deviation. It can be shown that at minimum deviation, a homocentric bundle of rays (one which radiates from a single point) remains homocentric on refraction through the prism. This is not true away from minimum deviation. Minimum deviation in a prism explains several of the halo phenomena caused by ice crystals in the atmosphere, since the intensity of rays refracted in randomly oriented prisms is a maximum near minimum deviation.

Aniseikonia

Let's talk about this important condition of eye disorder. The Aniseikonia is a binocular condition in which left and right images differ in size or shape. There are two types of aniseikonia – static and dynamic aniseikonia. The first type is the classical aniseikonia, denoting a perceived image size difference with a fixed gaze direction. The second type of aniseikonia is also called induced anisophoria and denotes a perceived image size difference due to unequal prism effects when looking through different parts of the two (anisometropic) spectacle lenses. For clinical purposes, the two types of aniseikonia are often related. The static aniseikonia is typically (but not always) two thirds of the dynamic aniseikonia.
The symptoms more usual are: Headaches; Astenopia (fatigue, burning, tearing, ache, pain, pulling, etc); Photophobia; Reading difficulty; Nausea (more common in female); Motility (diplopia); Nervousness; Vertigo and dizziness; General fatigue; Distorted space perception.
The incidence of aniseikonia is often underestimated, mainly here in Brazil. The most well known patient group at risk is the anisometropes. For management of Aniseikonia, 3 basic steps of aniseikonia management are:
• Objectively measuring the aniseikonia;
• Subjectively verifying that the patient would be helped by prescribing iseikonic lenses;
• Determining a new spectacle prescription to correct for the aniseikonia.
Clinical management of aniseikonia used to be done only by a few specialists (strabismological, orthoptists). The main reasons for this lack of skill and knowledge among professionals are believed to be outdated and insufficient instruction, the lack of simple and accurate instrumentation, and the relatively complicated or time-consuming determination of iseikonic spectacles. On the other hand, the number of aniseikonia patients is substantial and growing, due to the ageing population and the increase in cataract and refractive surgery operations. Another reason, heard sometimes, for not managing aniseikonia, is that iseikonic prescription spectacles can be cosmetically unattractive. Of course, this depends a lot on the amount of aniseikonia to be corrected and the frame size. There might also be a trade-off to undercorrect aniseikonia to keep the spectacles attractive. The trade-off between appearance and correction will depend a lot on the patient and on the severity of the symptoms. Many aniseikonia patients would prefer to trade a reduction in good appearance for more visual comfort. Also, the patient might purchase two pair of spectacles – one for optimum visual comfort for daily routine and one for optimum appearance during social events.
Thanks for Dr. Gerard C. de Wit researcher at Optical Diagnostics in the Netherlands.
Leandro Rhein. Orthoptics Practice