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2019年04月25日

高度近視的人不應該吃辣椒和喝酒

高度近視是指以退行性疾病為特征的屈光不正,如近視超過400-600度、眼軸延長、視網膜和脈絡膜萎縮。高度近視的病因、發病機制、治療和預防與一般近視不同。


新鏡片設有用作矯正近視及散光的「中心光學區」,並於圍繞中心光學區伸延至鏡片周邊加入小區域離焦度數,令眼內形成「近視離焦」,令小童的眼軸生長會趨向變短,有效抑制配戴者近視 加深

高度近視是遺傳的


在我國,高度近視是常染色體隱性遺傳。主要表現為學齡期(學齡前)近視,近視度進行性增加,眼底視網膜脈絡膜病變逐年加重,導致嚴重並發症。因此,高度近視又稱為病理性近視、惡性近視、退行性近視、進行性近視和遺傳性近視。


高度近視對健康有害。


高度近視患者的患病率非常高,約為1%。高度近視可引起許多嚴重並發症,其中大多數可引起失明。它是成人失明的常​​見原因之一,在中國失明疾病中排名第六。主要的並發症是:


兒童近視控制鏡片MyoSmart將於12日起在全港約150間眼鏡分銷商率先發售。

1。後鞏膜葡萄腫:發生率分別為77%和1%。主要表現為眼球後極擴張,視神經萎縮,視網膜周圍變性,矯正視力下降。近視程度越高,後鞏膜葡萄腫發生率越高。


視網膜萎縮、出血和撕裂:由於眼的軸較長和後鞏膜葡萄腫脹,高度近視患者易發生視網膜退化、撕裂,造成出血和視網膜脫離,導致失明。


3。視網膜下新生血管:發生率為5%,≤為40%。表現為後極部視網膜下新生血管形成,導致出血,影響視力。


4。視網膜脫離、白內障和青光眼:由於鞏膜擴張和視網膜變性,高度近視患者發生視網膜脫離的機會是非高度近視患者的7~8倍。高度近視也比正常人更容易並發白內障和青光眼。


自2012年起,Hoya Vision Care就著兒童近視問題,與香港知名大學合作研發,經6年時間設計出採用革命性D.I.M.S.技術的MyoSmart兒童 近視 控制 鏡片。鏡片用了創新先進的生產技術,外觀與一般的鏡片無異,但其實暗藏乾坤。鏡片表面平均佈滿了近視離焦區域,透過於眼內造成「近視離焦」來控制近視。

高度近視不僅影響日常生活,而且給患者帶來許多並發症,如視網膜脫離、白內障、黃斑出血、黃斑變性、玻璃體液化變性、青光眼等,且程度越高,並發症發生的可能性越大,導致失明和眼球萎縮的可能性越大。


根據劇烈沖動的頭部運動,如足球、籃球、跳水、舉重和刹車,視網膜可能發生脫離。如果你不注意吃辛辣的食物,喝酒會引起黃斑眼底反複出血。


相關文章:

近視的常見原因


青少年多屬假性近視


是否需要注意高度近視


近視的主要原因


近視常見並發症

  


Posted by lshds at 15:51Comments(0)

2019年04月04日

The bag male returns to make feeling of bags brands

After i to start with became a repeated flyer pretty much forty many 


years back, I believed Boyt Luggage was very hot stuff. Samsonite owns the

name now.


Once i began making more than enough revenue to order superior luggage, I

switched to Hartmann. Samsonite owns the name now.


Recently, Tumi has become the model that motivated business travelers to

pay for a tiny bit a lot more. Samsonite bought Tumi previous month inside a

deal valued at $1.8 billion.


With $2.five billion in profits, Samsonite owns many luggage brands whose

names you could vaguely figure out. American Tourister is Samsonite. So is

Superior Sierra, which has an effect on an outdoorsy image. The French

manufacturer Lipault markets mainly to gals, but it also belongs to

Samsonite. Speck, which makes protecting covers for electronics, is

Samsonite, also. Ditto Gregory, whose backpacks are large plenty of to stash

your whole worldly merchandise.



tumi briefcase is the best briefcase

My place? Only that luggage by another title generally arises from

Samsonite, the industry's foremost player, or 1 with the many hundreds of

anonymous Chinese producers you discover on Alibaba. All people would seem

to slap their identify on vaguely generic luggage, which include car or

truck makers Bugatti and Ferrari; Coleman, most effective identified for

beverage coolers and camp stoves; fashion designers Nicole Miller and Tommy

Hilfiger; and in some cases New Balance and Below Armour, the sporting-goods

firms.


Ebags, the web retailer, promises to hold about seven hundred brand names

of baggage. Yet in addition it feels compelled to market its personal

manufacturer, as well.


Offered that Babel of bags, how do you discover the proper 1 for you

personally? Very simple, honest respond to: How the hell do I realize? No

one sane would even attempt to match you with an "ideal" piece of

baggage.


"Luggage is this type of barrel of snakes!" admits Susan Foster, who

wrote a reserve around the topic - or, at the very least on how to pack the

baggage you do acquire. "people pack and journey so otherwise that it's

really hard to recommend" a one-size-fits-all remedy.



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What I offer here are some sane guidelines for refining your choices

and ferreting through the barrage of battling makes.


Rolling into history


As a frequent-flying dinosaur, not just one of my luggage have

retractable handles or wheels. (I continue to carry the amazing handmade

creations of Glaser Designs.) But I get that you'll probably want wheels on

your bag.


The question, however, is how many wheels are more than enough?


Until recently, the standard was two wheels, especially for baggage

considered carry-on compliant. But "spinners" - bags with four wheels - are

beginning to dominate. Spinners are extra stable and stand upright. They can

also be turned sideways and effortlessly wheeled down narrow aircraft

aisles. But pulling a two-wheeled bag is usually faster. Another concern:

Wheels are easily damaged. The much more wheels your bag has, the more

likely it's to get dinged.


Weights and measures


Measurement and weight are crucial for both carry-on and checked luggage.

The problem? The airline industry has no standard of weights and

measures.


An try to create an international carry-on baseline final year was met

with scorn. But I assume the abandoned global standard (21.5 x 13.five x

7.five inches) will eventually be adopted. Keep that in mind when you're in

the sector for a replacement. As for weight, U.S. carriers generally don't

impose a limit on carry-on baggage. But many international airlines do and

they often rigidly enforce a 15-pound maximum. purchase and pack

accordingly.


Bags you obtain to check must navigate a similar grid of conflicting

airline rules. Although most permit 50-pound luggage before imposing "excess

weight" fees, some surcharge any checked bag over 40 pounds. Dimensions

limits vary, too, although the U.S. industry has generally coalesced around

a maximum of 62 linear inches. (For a bag's linear dimensions, add the

length, width and height.) If you frequently journey with international

airlines, consult their checked-baggage rules for anomalies.


Material matters


The old argument - hard-sided or soft - is just that: old. It has little

relevance in a world of super-strength nylons and ultra-light composites. So

fret less about the challenging versus soft rule of olden days and focus

about the material used.


Ballistic nylon, a predecessor of Kevlar, is the current coin with the

realm in many in the best soft-sided luggage. It is actually tough and

durable. But it's heavier than Cordura nylon or polyester, the material used

in the the very least expensive soft baggage.


Leather is just about always heavier than nylon. It's virtually always

far more expensive, far too, and requires substantially more care. That's

why all-leather luggage has fallen out of favor. But I'll surrender my 15-

year-old Glaser Designs Transaction Bag when you pry it from my cold, dead

hand. It's my go-to carry-on and has weathered my life within the road much

much better than I.


Molded plastic luggage are the current rage, of course. ABS, an acronym

for acrylonitrile-butadiene-styrene, is an inexpensive thermoplastic. It

truly is light and inexpensive and dominates the lowest-priced segment.

polypropylene is the lightest of the polymers and tends to make durable

baggage than ABS, but they will cost additional. Meanwhile, polycarbonate is

light and strong and lends itself to a wide range of designs. polycarbonate

baggage will generally be the most expensive models in this category.


Aluminum cases, originally pioneered by Zero Halliburton, are a nearly

perfect combination of light weight, sturdy construction and jet-set style.

The problem: price. They are extremely expensive.



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Posted by lshds at 21:03Comments(0)