Eagleview Eye Clinic

Tag refractive Errors

REFRACTION

🔍 Refraction is the bending of light as it passes through different mediums (e.g., air, lens, cornea). In the eye, it focuses light onto the retina.

Types:

  1. Emmetropia: Normal vision.
  2. Myopia (nearsightedness): Blurred distance vision.
  3. Hyperopia (farsightedness): Blurred near vision.
  4. Astigmatism: Distorted vision.
  5. Presbyopia: Age-related near vision loss.

Tests:

  • Visual acuity: Snellen chart.
  • Autorefraction: Objective measurement.
  • Subjective tests: Lens power adjustment.

Corrections:

  • Glasses/contact lenses: Adjust refractive power.
  • Surgery: LASIK, PRK, etc.

HYPEROPIA


Hyperopia, also known as farsightedness, is a common vision condition where distant objects are seen clearly, but nearby objects appear blurry. This occurs when the eyeball is too short or the cornea is too flat, causing light to focus behind the retina instead of directly on it.

Symptoms


1. _Blurry near vision_: Difficulty seeing objects up close.


2. _Eye strain_: Discomfort or fatigue after reading or other near-work activities.


3. _Headaches_: Frequent headaches due to prolonged eye strain.

Correction


1. _Glasses_: Convex lenses to converge light rays.


2. _Contact lenses_: Convex lenses to correct vision.


3. _Refractive surgery_: Procedures like LASIK to reshape the cornea.

If you’re experiencing symptoms, consult an eye care professional for a comprehensive eye exam and personalized guidance.

TYPES OF LENSES ACCORDING TO REFRACTIVE ERROR.

These includes:

a. CONCAVE LENSES: They are known also as Minus lenses, they are used to correct shortsightedness or myopia.


b. CONVEX LENSES: They are also known as plus Minus and are used to correct hyperopia or Long sightedness.


c. CYLINDRICAL LENSES: They are lenses used to correct astigmatism.

SOME CAUSES OF NIGHT VISION PROBLEMS

Night blindness (nyctalopia) is a condition that can be caused by series of conditions and these conditions includes;

  1. Myopia
  2. Retinitis pigmentosa
  3. Vitamin A deficiency
  4. Cataract
  5. Horner’s syndrome.

Treatment of this condition largely depends on the cause

EYE CONDITIONS THAT CAN BE DISCOVERED IN YOUR CHILD BY TAKING THEM FOR COMPREHENSIVE EYE EXAMINATION

These conditions includes

  1. Retinoblastoma
  2. Refractive Errors
  3. Congenital cataract
  4. Congenital glaucoma
  5. Strabismus
  6. Amblyopia
  7. And many more…….
EYE CONDITIONS THAT CAN BE DISCOVERED IN YOUR CHILD BY TAKING THEM FOR COMPREHENSIVE EYE EXAMINATION

These conditions includes

  1. Retinoblastoma
  2. Refractive Errors
  3. Congenital cataract
  4. Congenital glaucoma
  5. Strabismus
  6. Amblyopia
  7. And many more…….
EYE CONDITIONS THAT CAN BE DISCOVERED IN YOUR CHILD BY TAKING THEM FOR COMPREHENSIVE EYE EXAMINATION

These conditions includes

  1. Retinoblastoma
  2. Refractive Errors
  3. Congenital cataract
  4. Congenital glaucoma
  5. Strabismus
  6. Amblyopia
  7. And many more…….
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