Definitions for long-sightedness
long-sight·ed·ness

WikipediaRate this definition:0.0 / 0 votes

1. long-sightedness

   Far-sightedness, also known as long-sightedness, hypermetropia, or hyperopia, is a condition of the eye where distant objects are seen clearly but near objects appear blurred. This blurred effect is due to incoming light being focused behind, instead of on, the retina wall due to insufficient accommodation by the lens. Minor hypermetropia in young patients is usually corrected by their accommodation, without any defects in vision. But, due to this accommodative effort for distant vision, people may complain of eye strain during prolonged reading. Some hypermetropes can see clear at distance, but near vision may be blurred due to insufficient accommodation. For this reason, this defect is referred as far-sightedness. If the hypermetropia is high, there will be defective vision for both distance and near. People may also experience accommodative dysfunction, binocular dysfunction, amblyopia, and strabismus. Newborns are almost invariably hypermetropic, but it gradually decreases as the newborn gets older.There are many causes for this condition. It may occur when the axial length of eyeball is too short or if the lens or cornea is flatter than normal. Changes in refractive index of lens, alterations in position of the lens or absence of lens are the other main causes. Risk factors include a family history of the condition, diabetes, certain medications, and tumors around the eye. It is a type of refractive error. Diagnosis is based on an eye exam.Management can occur with eyeglasses, contact lenses, or refractive corneal surgeries. Glasses are easiest while contact lenses can provide a wider field of vision. Surgery works by changing the shape of the cornea. Far-sightedness primarily affects young children, with rates of 8% at 6 years and 1% at 15 years. It then becomes more common again after the age of 40, known as presbyopia, affecting about half of people. Best treatment option to correct hypermetropia due to aphakia is IOL implantation.Other common types of refractive errors are near-sightedness, astigmatism, and presbyopia.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Long-sightednessnoun

   the state or condition of being long-sighted; hence, sagacity; shrewdness

2. Long-sightednessnoun

   see Hypermetropia

How to pronounce long-sightedness?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say long-sightedness in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of long-sightedness in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of long-sightedness in Pythagorean Numerology is: 6

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Long-Sightedness
2. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/long-sightedness