Nearsightedness and Farsightedness: Everything You Need To Know! 

The most common forms of visual problems are nearsightedness and farsightedness. And we are sure you have heard of these visual problems before, but do you know what they are? 

To put it simply, nearsightedness is when people can see close objects clearly, but farther objects blur away. Whereas farsightedness is the opposite of nearsightedness as people can see farther objects clearly, but closer objects appear to be blurry. However, these two common vision defects can be a little confusing for common people. 

In persuasion, we have explained the differences between nearsightedness and farsightedness and everything you should know about these defects beforehand. 

What is nearsightedness?

Nearsightedness, commonly known as myopia, is the most common vision condition in which a person can see nearby objects clearly, whereas distant objects appear blurry. 

This condition occurs when the eyes bend light rays incorrectly. Thus, the image is focused in front of the retina, not on the retina. 

You can confirm nearsightedness with a basic eye test. Further, this condition can be compensated with eyeglasses, contact lenses, or refractive surgery. 

Symptoms

Nearsightedness symptoms include:

  • Distant objects appear to be blurry, 
  • Need to partially close the eyelids to see clearly, 
  • Headaches due to eyestrain/ eye fatigue/ soreness, or
  • Difficulty seeing while driving a vehicle (mostly at night). 

This eye condition is more prominent in teens through their early childhood days. The different symptoms of myopia in children include:

  •  Squinting, 
  • Need to sit closer to T.V/movie screen/ the front of the classroom, 
  • unaware of distant objects, 
  • Excessive blinking, or
  • Rubbing eyes frequently. 

Causes

There are two main parts of the eyes for focusing image:

  • Cornea 
  • Lens

These image-focusing elements are of perfect curvature in a normal eye. It leads to correctly bending or refracting all incoming light to make an image directly on the retina (at the back of the eye). 

However, light rays fail to refract correctly when the cornea or lens isn’t smooth and evenly curved. It is known as a refractive error. This error leads to image formation in front of the retina; as a result, the formed image is of a blurry appearance. 

When to see a doctor

Visiting a doctor can determine the degree of nearsightedness and advise the right option to correct your vision. So, visit a doctor when:

  • You face difficulty in seeing distant objects clearly, 
  • You are unable to perform a task, 
  • When the quality of vision detracts, 
  • A curtain-like shadow forms over your visual field, or
  • You experience flashes of light. 

What is farsightedness?

Farsightedness, commonly known as hyperopia, is a common vision condition in which a person can see distant objects; however, the nearby objects appear to be blurry. 

You can confirm farsightedness with a basic eye test. Further, this condition can be corrected with contact lenses, eyeglasses, or surgery. 

Symptoms

Farsightedness symptoms include:

  • Nearby objects appear blurry, 
  • You need to squint to see clearly, 
  • You have general eye discomfort/a headache after doing close tasks (reading, writing, computer work/drawing), or 
  • You have eye strain/burning eyes/aching in or around the eyes.

Causes 

There are two main parts of the eyes for focusing on an image:

  • Cornea 
  • Lens 

Each element showcases an even and smooth curvature, such as the surface of a marble. Such a smooth surface bends or refracts all the incoming light directly on the retina (at the back of the eye) to make a focused image. 

However, when these elements aren’t smoothly or evenly curved, incoming light rays fail to refract correctly. It is known as a refractive error. 

Furthermore, a farsightedness vision condition occurs when the eyeball is shorter than normal, or the cornea is unevenly curved. Moreover, this vision condition is the complete opposite of nearsightedness. 

When to see a doctor

Visiting a doctor can determine the degree of farsightedness and advise the right option to correct your vision. So, visit a doctor when:

  • The degree of farsightedness hinders your day-to-day activities, or
  • The quality of vision detracts. 

Endnote 

Nearsightedness is a vision condition that means being able to see nearby objects, whereas farsightedness is the opposite of it. It means being able to see far away objects. 

So, if you have a vision problem, get in touch with a professional optometrist or ophthalmologist to get it checked at the earliest. They are highly trained professionals who can easily treat your vision condition by recommending the right corrective measures such as eyeglasses, contact lenses, or surgery. 

However, you must take preventive measures to maintain eye health as you age. So, protect your eyes from environmental factors, eat healthy food, and follow a physically active lifestyle.