The shadow on the eye when seeing is caused by the positioning of the light source in relation to the eye. When light shines on an object, it creates a shadow on the opposite side of the object. In the case of the eye, if the light source is coming from a particular angle, it can create a shadow on the eye, especially if the eye is recessed or has a prominent brow bone. This can be observed when the light source is coming from above or from the side, casting a shadow on the eye socket. **

The black shadow in the corner of the eye is often referred to as a floater. Floaters are tiny clumps of cells or material inside the vitreous, the gel-like fluid that fills the inside of the eye. They cast shadows on the retina, which is perceived as dark spots or lines in the field of vision. While floaters are usually harmless, they can sometimes be a sign of a more serious eye condition, so it's important to consult an eye doctor if you notice an increase in floaters or experience flashes of light along with them. **

No, a driver's license is not valid forever. In most countries, driver's licenses have an expiration date and need to be renewed periodically. The renewal process typically involves meeting certain requirements, such as passing a vision test or taking a written exam. It is important to keep track of the expiration date of your driver's license and renew it on time to avoid driving with an expired license. **

The main difference between "Oh my gosh" and "Oh my god" is the level of religious connotation. "Oh my gosh" is a more neutral expression that is used as a substitute for "Oh my god" in order to avoid taking the Lord's name in vain. "Oh my god" is a more direct expression that invokes the name of God and may be considered more religious or irreverent depending on the context and the beliefs of the speaker and the listener. **

No, the first aid course is not valid forever. Most first aid certifications expire after a certain period of time, typically 2-3 years. This is because first aid techniques and guidelines are regularly updated, so it is important for individuals to renew their certification to ensure they are knowledgeable about the most current practices. It is important to check the expiration date on your first aid certification and make sure to renew it before it expires. **

The phrase "the eye loves to be forever close to the heart" is a metaphorical way of expressing the deep emotional connection between two people. It suggests that the eye, representing one person's perception and understanding, longs to be intimately connected to the heart, representing the emotions and feelings of another person. This implies a desire for emotional closeness, understanding, and empathy in a relationship. The phrase captures the idea that true intimacy and connection come from not just seeing and understanding each other, but also feeling and empathizing with each other's emotions. **

No, the LBV personnel number does not remain valid forever. It is typically assigned to an individual for a specific period of time, such as during their employment with a company or organization. Once the individual's association with the company or organization ends, the LBV personnel number may no longer be valid. It is important for individuals to keep track of their LBV personnel number and update it as necessary when changing jobs or affiliations. **

No, a SIM card is not gone forever. If a SIM card is lost or damaged, it can be replaced by contacting your mobile service provider. They can deactivate the old SIM card and provide you with a new one with the same phone number and account information. It is important to report a lost or stolen SIM card as soon as possible to prevent unauthorized use. **