They both correspond to problems with vision that distort close-up observation of objects and observation of objects at a distance.
Medical advisor Martín Moreno
Ophthalmologist surgeon, refractive surgery and cataract specialist
If an individual feels he is expending a lot of effort to see and that he cannot see objects either near or far with enough clarity, he could be presenting with visual problems known scientifically as refractive errors. The National Eye Institute of the United States explains that normal vision presents when the light focuses directly on the retina and not in front or behind the retina. This is why when myopia presents, the light locates directly in front of the retina causing distant things to look blurry and close up things to look clear. Contrariwise with hypermetropy the eyes frame the image behind the retina. Both pathologies share symptoms such as fatigue, headaches and visual overexertion just to focus. Therefore, if they are not treated on time they could interfere with every day activities such as reading, writing, watching TV or driving. Regular eye check-ups with specialists are useful in detecting these and other visual deficiencies.
These visual problems are generally hereditary. Nevertheless, there are individuals who develop an accommodative myopia (avoidable) associated with the excessive use of electronic devices and visual effort in poor lighting conditions.
WHEN DO THEY INITIATE?
In the majority of cases myopia develops during childhood. Likewise, in general, children are hypermetropes (farsighted) a normal condition known as physiological hypermetropy that occurs because the eyes are small. This situation can be corrected around 7 years of age when these organs are fully developed.
80% of cases with deficient vision on a worldwide scale are considered inevitable, as indicated by the WHO.
1.300 million people in the world live with some type of visual deficiency according to estimates of the World Health Organization, WHO.
35% of adults have a 20/20 vision, as stated by the American Academy of Ophthalmology reason for which they need contact lenses, eyeglasses or corrective surgery.
HOW TO CORRECT THIS?
- With eyeglasses or contact lenses patients get to improve their vision. Nonetheless, these measures do not correct the problems.
- Between 18 and 20 years of age visual defects usually set in so that it is pertinent to consider undergoing refractive surgery. Success lies in stopping the advancement of the condition.
- There are situations in which pathologies continue their course and it represents a very high range of cases.
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