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Blindness and vision impairment: Refractive errors

Refractive errors are common eye disorders. In simple technical terms, Refractive error refers to the eye’s inability to reflect light properly. In turn, this causes the eyesight on that side to become hazy. Because it is a regular symptom of the sickness, which eventually causes total blindness, most people often ignore this symptom. A straightforward diagnostic can aid in identifying this issue, but according to the WHO, uncorrected refractive defects affect almost 153 million individuals globally, leaving them without vision. To treat it, let’s learn about its causes, symptoms, and treatment.


Avoid staring at your phone for too long and avoid sitting too near to the TV,
Have your parents ever told you this? We bet you did. To protect your eyes, there is a compelling justification. Long-term use of digital screens puts tension on the muscles surrounding the eyes, which can cause headaches and refractive errors. Genes are another factor that can be controlled to lessen its effects.

What are the signs of refractive errors?

Vision blur is the most prevalent symptom. Additional signs comprise:

  • seeing double
  • Unclear vision
  • Observation of a halo or glare surrounding bright lights
  • Squinting
  • Fatigued eyes (when your eyes feel tired or sore)
  • Inability to concentrate while reading or using a computer

The signs of refractive defects may go unnoticed by some people. For an eye doctor to ensure that you are seeing as clearly as possible, it is crucial to receive frequent eye exams.

If you wear contacts or glasses and are still experiencing these symptoms, you may require a new prescription. If you’re suffering visual issues, consult our best eye doctor in Patel Nagar and schedule an eye exam.

What types of refractive errors exist?

Refractive error, a change in the shape of the eye that results in blurry vision, is a condition that ophthalmologists and optometrists at Bharti Eye Foundation may diagnose. You can see because of refraction, which is just the bending of light.

The light rays that an object reflects are refracted onto an inner lens when you look at it via the cornea, the transparent outermost layer of the eye. The retina, a layer of light-sensitive tissue at the back of the eye, is the object of the lens’s subsequent light focus.

Refractive errors often fall into 4 categories:


Nearsightedness or myopia is the inability to clearly view distant objects. It is challenging to read street signs and blackboards because distant objects appear blurry. Myopia occurs when light that has been refracted is focused in front of the retina rather than onto it. The cornea’s excessive curvature or an enlarged eyeball may both contribute to this.

Myopia typically first manifests in early childhood. Myopia frequently worsens while a person is in school or going through adolescence and stabilizes in their 20s.


Faraway objects are easier to see clearly than close-up objects, a condition known as hyperopia or farsightedness. Vision may be hazy at any distance if hyperopia is severe. When light is refracted in front of the retina instead of onto it, hyperopia results. If the cornea has too little curvature or if the eyeball is too short, this could happen.

At any age, hyperopia can develop. Some kids suffer a little hyperopia, but it goes away by the time they’re teenagers.


Vision blur caused by astigmatism is a result of an oddly shaped cornea. The cornea is less spherical and more resembling a football or an egg in astigmatic individuals.


You could find that as you get older, it gets harder to focus up close, especially when reading. Presbyopia is the term for the condition that affects the majority of people after the age of 40 when the lenses in your eyes, which concentrate light, gradually lose their capacity to change shape to enable you to focus on close objects.


Wearing glasses serves as a medium to shift the location of the light’s point of contact with the eyes, resulting in a crisp, clear image. This course of action can only assist in halting the error’s growth. For people who dislike wearing glasses, contact lenses have emerged as an improvement over glasses. We can fix the refractive error by covering them with the eye’s surface. They do have a few restrictions, though.

A Lasik procedure is the most effective technique to permanently correct refractive problems. At Bharti Eye Foundation, our success with Lasik procedures is pretty impressive.

For enhanced visibility, we can alter the shape of the Cornea using LASIK surgery. The post-operative circumstances for this operation are simple and cause little discomfort.

We anticipate that this blog will provide you with a general overview of refractive defects, their causes, and effective treatments. Doctors with extensive knowledge are on hand and prepared to provide the finest remedy. Please schedule a consultation with one of our experts if you have any eye-related discomfort.


Other Eye-Related Problems:










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