眼睛總是“飛蚊”?這種情況通常出現眼此問題

王先生今年45歲。雖然他已經中年,但他仍然覺得自己很年輕,一點也不同意老人的意見。

但是最近,他的視力突然變差了。 每當他看到什麼東西,他就覺得有一只蟲子在他眼前飛。 他不能碰它。

這只眼睛怎麼了?

龍廈愛爾眼科醫院眼底科主任陳忠平,王症狀,是在一個非常特殊的眼病是典型的“漂浮物”是很常見的一種。

病人眼睛前方會出現黑點,它們會隨著眼球的轉動而四處飛行,就像飛蚊一樣,它們的形狀是圓形、橢圓形、點狀、線狀等。常見的情況是,當病人看到藍天、白牆等明亮的背景時,更容易發現它的存在。

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飛蚊症最常見於40歲以上人士、高度近視、白內障手術,以及眼睛發炎或視網膜血管疾病等其他疾病。

蚊子也可分為生理和病理條件。如果病人的自我陳述能看到細小的黑影飄浮,客觀的檢查就不會發現是一只生理性的飛蚊。

相反,如果飛蚊症突然,如飛蚊症,飛蚊症或他們的身影視力突然增加,視力差,視野缺損的突然出現前的現象,重要的是要注意不祥。

惡性浮球病是一種嚴重威脅眼球的疾病,一般由嚴重疾病引起。這是由於玻璃體附近的大網膜、視神經、睫狀體等結構的病變,需要及時治療。

雖然飛蚊是一種常見疾病,但不能排除少數飛蚊是嚴重疾病的症狀。 需要認真對待,因為惡性腫瘤可能對眼睛造成威脅,並有嚴重的並發症:

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1. 視網膜裂孔、視網膜脫離

因為玻璃體後脫離等原因,可能會出現在視網膜上孔玻璃體液化貫通孔,可引起視網膜脫離。視網膜脫離的早期症狀是在數量立即急劇增加“浮動”。

如果你放手,你會失去你的視力。一般來說,激光可用於視網膜孔周圍的凝結(激光凝固法),可在門診部進行治療。如果發生視網膜脫離,必須住院手術。

2. 玻璃體出血

糖尿病、高血壓和外傷可引起眼底出血,一旦血液進入玻璃體,就會突然出現蒼蠅症狀。 由於出血量和部位不同,可引起不同程度的視力喪失。 在這種情況下,如果出血少可以自愈,常用止血藥和促進血液吸收的藥物來治療。 根據情況,激光和手術也可以使用。

3. 葡萄膜炎

一旦細菌或病毒在VEA中,眼睛由於過敏反應而發炎,此時,白細胞和滲出物將從血管進入玻璃體,由此產生飛蚊的症狀。當炎症增加時,»中上層»增加,視力下降。

因此,如果發現有飛蚊症舞蹈前,首先要根據情況做專科檢查,治療後檢查,如視網膜病變不能采取玻璃體激光燒蝕處理。

如果飛蚊太小,可以被藥物吸收,也可以逐漸適應,而不會產生太大的張力。同時,我們需要時刻確保安全。一次檢查的結果並不意味著永遠不會有問題。一旦出現閃光,飛蚊突然增多,或者視線受阻,我們需要立即接受詳細檢查。

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王先生的案子對我們來說是個警鍾。 健康不是理所當然的。 在我們的日常生活中,我們應該多注意自己的健康,多注意眼睛是否合理使用,眼睛是否健康。

在正確維護的前提下,積極面對疾病、早期發現和早期治療,有一對清晰的眼睛。

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Electrical power monitoring in DC techniques

Electricity checking and management are crucial for transportable, battery operated units, however the process has become increasingly essential in more and even more applications. There are several means to watch power, but shunt resistors are generally cheaper than other implementations, and much more effective power management could be achieved by combining shunt resistors with microprocessors.

Units as extensive as facts centers can be made noticeably additional energy-efficient and fewer high priced by very careful strength checking and management, though the target understandably remains on battery operated devices. Because the introduction of mobile phones 20 years back, the quantity of rechargeable battery powered units has greater exponentially. Tactics pioneered in mobile phones are at present getting adopted by laptop suppliers; we will overview a number of people efforts under.

Hardware builders are inclined to target a lot more plus more on low-power implementations, though expanding abilities and reducing dimension and price. Software developers also goal to lower electrical power consumption by researching and establishing new, power-aware approaches to older algorithms. That features equally working methods (energy-aware scheduling, as an example) and applications, which includes newer applications this sort of as machine finding out.

Energy compared to ability

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Energy may be the instantaneous intake of power. In electronics, electricity is the products between instantaneous voltage and existing (EDN visitors ought to discover the following equation familiar). The fundamental evaluate, the watt, can be a Joule for each next.p=V×I [W= J ?s]

Vitality is definitely the products between electrical power and time. It can be what circuits eat and what batteries keep. Taking care of electric power commonly implies running instantaneous currents and voltages to fulfill power transport abilities and loading circumstances. power monitoring usually offers info on electrical power use to help builders with battery management and in general electrical power benchmarking. Lively electricity management occurs when electrical power is monitored by program especially created to consider actions based on specific loads.

Active electricity management can be done both quickly, based on predefined configurations, or manually when the software program starts, to provide selected suggestions and solutions towards the user. For example, when most laptops run on battery in place of AC electrical power, the processor general performance may very well be immediately minimized and graphics may be switched towards the built-in graphics processor, which is lower electric power with significantly less general performance in comparison with the devoted processor. A few of the notebook peripherals is often switched off to achieve far better battery lifetime, or even the consumer can get notifications to lower monitor brightness or keyboard backlight.

Most smartphones have energy-saving options that happen to be advised from the lively vitality administration application in the event the battery drops beneath a specific amount. This involves turning off some energetic online connections, lowering monitor brightness, and other people.

The examples really do not end with battery-powered gadgets, however. Servers thoroughly keep an eye on electricity use and cargo amount to make your mind up if specific providers may be stopped or suspended. During the circumstance of digital servers in which an software can scale up and down depending on the complete existing usage and utilization predictions based on stats, hypervisors can absolutely shutdown a few of the digital equipment.

Yet another software in which active power management is often useful is in debugging. Checking electricity can provide effective info as to whether in general units, or elements of these, conduct in boundaries.

Summary

Depending on the need for electrical power monitoring, as well as other functions the method ought to accomplish, some methods could possibly be a lot more appropriate than others. The basic method could possibly be the winner in circumstances where an embedded process is built with its own function and it also ought to know its ability consumption or have an strength estimation. It will also be recommended the microcontroller has an inner ADC, so that the prices for vitality checking attributes could well be minimal. During this approach, just the external analog circuitry used for voltage and current sensing is needed. Other instances where the common solution is more ideal than the integrated one is when really significant accuracy is needed and BOM cost and electricity consumption will not be a problem.

The integrated solution is more ideal when power measurement is integrated in conjunction with an working procedure mainly because the integrated remedy is currently built for this. With suitable motorists, the procedure is aware what to do. This can be a benefit in scenarios in which, one example is, plenty of buses need to be monitored, for the reason that electrical power measurement ICs can ordinarily measure much more than a person channel (thus, more than just one bus). In addition, numerous ICs can be employed over the exact same communication bus (these as I2C or SpI).

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Yet another situation in which the built-in solution wins is when measuring electricity about for a longer time periods of time while having the method inside a really minimal energy sleep mode or fully shut down. This depends about the point the integrated vitality monitoring chips draw little or no electrical power and can make calculations and electricity accumulations around particular periods of time by on their own, with out any program intervention by any means.

Not to mention, when size matters in very built-in and dense pCBs, such as the mainboards of telephones, tablets or laptops, an built-in circuit generally occupies much less space than its equal discrete parts.

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positive aspects of energetic energy monitoring