The Differences Between Nearsightedness and Farsightedness

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Like astigmatism, nearsightedness and farsightedness are both problems in how our eyes focus the light on the retina. Doctors call them refractive conditions that affect how the light enters the eyes will cause us to see the blurred objects in our surroundings. However, there is a difference in how we perceive objects at certain distances.

Nearsightedness or Myopia

Nearsightedness, also called myopia or shortsightedness, is a condition characterized by the ability to see objects at a closer proximity more clearly than objects that are placed further. To a person with myopia, the nearer objects appear normal because the eyeball is elongated, causing the light to form at the front of the retina instead of on it. Reading books will pose no problems, but you will have a difficult time making out what’s written on a billboard. Myopia also causes night blindness, meaning, you’ll find it more difficult to see objects in minimal lighting.

The condition may be caused by malformations in the eyes, aging, cataracts, or as a side effect of some drugs. Like all refractive problems, myopia is diagnosed by an ophthalmologist through extensive eye examinations. An individual is usually advised to wear corrective lenses to improve the vision.

Farsightedness or Hyperopia

Farsightedness, also called hyperopia or hypermetropia, is the opposite of myopia, which is characterized by the ability to see objects at a distance more clearly than those that are closer to you. The light coming through the eyes forms behind the retina instead of on it and is often caused by the shortness of the eyeballs, a flat cornea or the irregular curvature of the lens. These eye problems may be inherited or a consequence of injuries, migraine attacks, and even sinus infection.

Hyperopia is diagnosed by an ophthalmologist through an extensive eye exam and the individual may be advised to wear corrective lenses to improve vision. Some types of nearsightedness also need surgery, such as the removal of a layer of the cornea to correct the problem.

Astigmatism

Astigmatism is also a refractive error that prevents the eyes from focusing the light into the retina, causing multiple focal points. The result is a blurred vision regardless of the distance of the object. It could be a combination of myopia and hyperopia in some individuals.

The most common methods in testing a person’s vision is with a Snellen Test Chart, retinoscopy, and automated computerized tools. Besides prescription corrective lenses, the individual might also want to consider procedures designed to correct the curvature of the retina such as, radial keratotomy, automated lamellar keratectomy, excimer laser photo refractive keratectomy, and LASIK.

Kidney Damage Symptoms That You Should Watch Out

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Kidney damage is not new here in Singapore. Many people suffer from this and what is disturbing is that it could be less serious if the patient noticed the symptoms at the onset. It is important that you identify the signs at the onset so you can effectively describe it to the doctor. Remember that early detection can be the difference between life and death.

Do not underestimate kidneys. Kidneys are in fact one of the most important organs in the body. Doctors appreciate people who come early. If the signs are detected early, there is a big possibility of a successful treatment. You have to know that warning signs start to appear long before the development of the disease. This is the reason why detection for a successful treatment is imperative.

Do not let the kidneys get damaged because it can threaten your life at the end of the day. You have to keep your body healthy and strong. Here are the symptoms that you should watch out:

  • Low back pain: Low back pain signifies kidney damage. If you experience low back pain and is usually accompanied by aching urination, you should go to the doctor immediately. That is not normal. Do not risk it by simply ignoring it. Many people simply ignore it because the pain slowly eases after waking up in the middle of the night.

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  • Skin diseases: Some people see skin disease and immediately consult their dermatologist. That is good but the wisest thing to do is meet with your physician. If you are suffering from beyond-normal itching and dryness of the skin, you have to consult your doctor right away. Kidneys are capable of eliminating toxins. If the toxins are accumulated in the blood, it will make your skin dry and irritated.

 

  • Body swelling: No matter how hard you convince yourself that your swelling is normal, the body knows if there is something wrong with it. If kidneys do not remove the excess fluid in your body, it will lead to swelling of hands, feet, face, legs and ankles. This is surely a sign that wastes inside the body are starting to accumulate.

 

  • Color of the urine: Watch out for your urine too. When the kidney is damaged, the color of your urine will change. If the color is beyond normal, you should be concerned. It does not end there, if you notice that your urine become concentrated and foamy, it is time that you seek the help of doctors immediately. Do not delay it.

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