Archive for March, 2007

Adnkronos, be wary of low-quality sunglasses

Saturday, March 31st, 2007

Be wary of low-quality sunglasses

“Cheap” sunglasses can hide a double snare. Beside of not protecting for UV rays, and in some cases even impair your eyesight, they can create skin problems.

In most cases these are products from the Asian countries where the materials and the applied colourations do not satisfy the safety norms. Often cases of allergy and skinrash are encountered, most often with metal frames. The colouration of the plastic may be irritating and the lenses may cause rash and burning eyes, with the allergy reddening, soreness and itch may appear. These inconveniences don’t appear with good-quality glasses because, for example, the industry does not use risky metals in the alloys for the frames.

Source: Adnkronos Salute of 24 May 2006

Christian Dior, the focus on some models

Saturday, March 31st, 2007

Black Tie 50S

BLACK TIE 50/S
Acetate sunglasses - Lenses base 8, scar in metal that enunciate from the temples - Logo “Dior Homme” engraved on the temples. Available colours: black with dark-grey lenses, black with grey graduated lenses, havana with grey brown fumé lenses, blue with blue lenses, maroon with brown graduated lenses, red with gray graduated lenses.

Christian Dior model 00888S

DIOR 0088/S
Sunglasses in metal, drop-shaped with a wrapped and sportman design. “Cut Dior” glazed in contrasting colours at the front. Holes at the side that remind of the rings of photocameras, “Dior Homme” engraved on the temples. Available colours: military green with graduated brown lenses, graduated gray and opaque maroon with graduated brown lenses, black opaque with fumé lenses, palladio with gray graduated lenses, palladio with bordeaux lenses.

Dior eyeglasses: 0085

DIOR 0085
Eeyglasses frame in metal and acetate; rectangular front and smoothened thicknesses with “Cut Dior” interpreted as a hole along the split temples. Logo “CD” engraved on the temples. Available colours: black opaque-havana, opaque maroon, rutenium-beige, rutenium-red, rutenium-gray, palladio-black, palladio-white, black.

Examine the Christian Dior catalogue.

Nearsightedness

Thursday, March 29th, 2007

The definition of nearsightedness.One defines nearsightedness as a condition caused by age, in which the accomodation becomes insufficient to give a sharp and comfortable vision at a short distance, normally called “reading distance”. In technical terms nearsightedness is defined when the distance is between 25cm and 2.5 meters..

If we want to discuss accomodotive diopters we can say that the nearsightedness begins when the accomodotive capacity of the crystal is less than 4 D (Diopters). A simple mathematical calculation considering a minimum distance of 25 cm gives a result of 4 D. The calculation is made using the inverse of the minimum reading distance expressed in meters and thus the inverse of 0.25 meters (25 cm) gives us 4 D.

This last definition deserves important considerations: in order to avoid eye fatigue one should use only 2/3 of the accomodation capacity (4 D) and leave 1/3 in reserve so that the minimum reading distance is 37 cm, i.e., 2/3 of 4 D is 2.66 D. Obviously reading at a distance of 37 cm may be OK for some but surely this distance cannot be the same for everybody. There are people with long arms and others with short arms.

Related articles: The classification of hypermetropy

Oculists: The patient is always at the center of our attention

Sunday, March 25th, 2007

The ophtalmology confirms itself as one of the most fermenting medical branches, not only for the always higher attention dedicated to prevention of visual pathologies during all ages, but also for the innovative technology, the instruments and the therapies that offer patients, with a good eyesight, a higher quality of life. This is important when one thinks that the average age is increasing and of the right of senior citizens to preserve independency as long as possible but also to lead a socially and culturally gratifying life.

Between the major novelties at the “Convegno Nazionale della Societá Oftalmologia Italiana” in Milan, which had 4,850 presences (a success without precedents), innovations were presented that bring the treatment of eye pathologies closer to the patient’s requirements, at a greater precision, avoiding complications.

During the convention there was a great interest for the, so called, intravitreal medicines, i.e., those substances able to increase the effects of photodynamic therapy, the treatment employed of the macula cornea, which according to estimates, affect more than 80% of the people which are 80 years or older.

In senior citizens, the aging process that involves, like all tissues, also the blood vessels, cause a reduction of oxygen and nourishment of the macula, the central and most sensitive part of the retina.
The organism, in order to compensate, creates new blood vessels that assure additional oxygen and nourishment. The risk is that the eye may be subject to hemorraghes that can damage the eyesight capacity more than the lack of nourishment.

One can add to the photodynamic therapy intravitreal medicines able to delay the vascular proliferation. Today there are specific therapies which do not cause the complications of the “old” treatments with cortison: very optimistic results are obtained with vascular growth inhibitors, that limit the process of growth of new blood vessels and are injected directly in the eye bulb. Other therapies will soon be available. The procedure for these injections, which are not painful and may be repeated as often as necessary till the pathology is stabilized, is today even safer due to the introduction of specific guidelines.

Speaking of pathologies of the third age one cannot not mention the cataract, which can affect also people of less than 50 years of age and even younger and children. The cataract intervention today is relatively simple, given the speed, execution and precision with which it is executed by the ophtamologists, but requires a sophisticated technology and a absolute control over the techniques and the instruments.

To limit the already minimal risk of complications and to offer the patient a security in legal terms, one cannot do without the presence of a anaesthetic, whose presence increases the safety margin and ensures the highest guarantee of success.

Even though the cataract therapy consists in the removal and substitution of the damaged crystal, there are always instruments that are more versatile and precise. Today the tendency is towards the substitution of the crystal with multi-focal lenses, able to simulate the crystal’s ability to focus on a nearby or far away object, permetting a fysiological accomodation and therefore a good eyesight in all situations.

This is a significant enhancement when one considers that, till some time ago, the patient had to chose, before the intervention, between being nearsighted or farsighted and to wear corrective glasses afterwards. These most recent lenses are also structured in such a way that they allow a natural vision at the center and in the perifery and also in low-light conditions, optimizing the capacity of the eye to control the amount of light from external sources. For this reason these “artificial crystals”, in all aspects similar to the naturals, may be applied also to younger people, guaranteeing a natural visual comfort in all situations.

Source: Health Europe of 05 december 2006 (in Italian)

The Oxydo eyeglasses collection

Saturday, March 24th, 2007

Occhiali vista Oxydo

The new eyeglasses frames distinguish themselves by the strong personality of the proposals in precious titanium, a very light, strong and analergic material, with a sophisticated line underscored by subtle temples and contrasting colours. The silhouette in acetate reveals instead an interesting workmanship of the material, creating pleasing sculpture effects and original chromatic nuances like red-black, gray-black, red-black-orange, on which the logo of this collection enunciates. The sunglasses collection and frames for eyeglasses, designed by Enzo Sopracolle, is manufactured and distributed by the Safilo group.

Oxydo eyeglasses catalogue

Source: Safilo press release.

Cause severe infections: homeopatic collyria withdrawn

Wednesday, March 21st, 2007

Homeopatic eyewashThe decision of the Italian Agency of Medicines to withdraw Revitorgan Conisan A (lot n. 1200 expiring June 2007) and Revitorgan Conisan B (lot n. 1260 expiring September 2007) :

ROME - The Italian Agency of Medicines (Aifa) has decided to withdraw from the market some homeopatic eyewashes because - as it informs in a press release - they may cause “severe eye infections”.

Revitorgan Conisan A (lot n. 1200 expiring June 2007) and Revitorgan Conisan B (lot n. 1260 expiring September 2007) “after an alarm that a severe infection of the eye bulb may occur after use of these eyewashes” have been withdrawn from the market. As precaution it is forbidden to use these products within Italy. Investigations are in progress - says the note of the Italian Agency of Medicine (Aifa) - to assert their security and sterility. Those who are in possession are invited not to use them and, if being used, to suspend their use and to consult their medical doctor. The Aifa, in order to inform Italian citizens, will provide correct and up-to-date information on the toll-free number 800 - 571 661.

Fonte: La Gazzetta del Mezzogiorno (in Italian) del 28/09/2006

The Oxydo eyewear collection

Tuesday, March 20th, 2007

Oxydo glasses

The new OXYDO sunglasses and eyeglasses collection, dedicated to the contemporary and trendy young, presents in the next months new models in line with the most recent fashion trends.
The female proposals enunciate the sunglasses fronts of a wrapping and rectangular style. The irresistable glamour of the acetate models — in decisive colours black, bordeaux, olive, hazelnut, crystal — is underscored with Swarovski crystals and the sparkling “X” icon which cannot be confused with other brands. The shapes in metal seduct with their profile entirely punctuated by sparkling strass and their chique metal colours: gunbarrel gray, black gold.

For men the new collection shows aggressive sunglasses masks, emphasized by small studs and extra-dark colours, like gray-black and opaque black. A strong personality also for the other masks with a front underlined with a profile in metal and the temples in injected plastic customized with a button with the “X” icon of this collection.
The sunglasses in thick, wrapping, acetate impose by their style and fascination: on the temples, characterized by a subtle line, appears the OXYDO logo in the tonalities of black-violet, black-bordeaux, black-green.
Have a look at the Oxydo catalogue

Source: Safilo press release.

Working at a PC strains the eyes?

Sunday, March 18th, 2007

Working at a video terminal worsens they eyesight?A question often posted to the doctor at work. The answer is loud and clear: No!

Shortsightness, longsightness, astigmatism do not become worse working many hours at a PC. This doesn’t mean that working at a video screen doesn’t cause any disturbancies. The disturbancies that appear are dryness, “sand in the eyes”, tears, “heavy” eyes, double vision, fuzzy vision, frontal headache, etc… all non-specific disturbancies but which become a nuisance at the end of the day. Let’s console ourself, they disappear after a decent rest: they are reversibile. These disturbancies are caused by a series of factors which can be contributary, i.e., inadequate furniture, blinding artificial light which reflects on the screen, wrong orientation of the video in relation to the windows, too much or too low light, bad microclimatic conditions: too dry air, too little air refreshment, cigarette smoke, new office furniture which release irritating substances, crowded space. But also too close protracted vision.

Also under perfect conditions, if a worker passes many hours in front of the video screen, inevitably he/she will will suffer of these generic disturbancies which may be summarized as “astenopia”: eye fatigue. Consider that, for example, the Italian norms require periodic visits by an eye doctor for those workers who spend more than 4 hours a day in front of a video screen: in these cases the employer is required to nominate a “work” doctor which will perform these periodic visits, provide education, etc…

Source: Super Eva of 1 ottobre 2006 by Cristiano Ravalli.

The classification of hypermetropia

Saturday, March 17th, 2007

Hypermetropia classification

After discussing the cause of hypermetropia and the eyesight of a hypermetric eye, see the post for “The hypermetropic eye”, it is useful to give an idea of the various types of vision of the hypermetropic eye and why this flaw may change over the years for various people. Hypermetropia may be manifested or be latent.

The manifested hypermetropia, which is measured by the oculist or optician simply by adding positive lenses in front of the eye, which is also the positive lens that corrects the ametropia. For young people, whose accomodation is very efficient, it is difficult to determine how much accomodation is applied also for far-away objects by an absolutely relaxed eye. It is therefore very difficult to establish how much manifested hypermetropia is present. The high capacity of accomodation causes an involontary compensation which, in turn, may cause fluctuations of the eyesight during the day.

The latent hypermetropia is the accomodation that the eye can compensate for with a lot of effort and which can be corrected with positive lenses. All hypermetropics, with the exception of very old people with very little accomodation, excercise the vision continually hiding or compensating the hypermetropia. This kind of hypermetropia can only be detected by a doctor with the help of eye drops (atropina, etc.) which inhibit the accomodation of the crystal.

Related articles: The hypermetropic eye

Porsche style eyeglasses

Thursday, March 15th, 2007

Porsche design model P8102

The new frames of Porsche Design Eyewear unite technological innovation of the materials with the exclusive design and the sportsman line for a decisive and full-of-energy look. Porsche Design is one of those brands of reference in this world of luxury. Leader in the male accessory sector of high quality, Porsche Design Eyewear is since 1972 the utmost expression of “luxury eyewear”.

Model P8102 - Eyeglasses of a particulary light frame weight, with temples in titanium and front in acetate which unite a sophisticated design with comfort.
Three bi-color variants: carbon front with opaque titanium temples / dark grey front with black opaque temples / black front with opaque grey temples.

Examine the Porsche Design catalogue.