Being Shortsighted
One of the most usual grounds for needing spectacles is shortsightedness
For a bundle of reasons, a person might become short sighted. The offical term for this is nearsightedness. When somebody is myopic, they can’t focus well into the distance, on the other hand they can see fairly distinctly, when looking up close at things.
The degree to which one is nearsighted depends on the powers of the cornea and the lens of the eye and the length of the eyeball. In a normal eye the incoming visual images meet on the retina in the back of the eye. If these visual images converge in front of the retina instead of on the retina, then one is nearsighted.
In General, shortsightedness gets better with age. It is not clear why this happens buy may well be something to do with the aging process. The thinking is that they lens becomes weaker or stiffer with age and doesn’t focus the light so quickly. Eventually, the light rays may even focus on the retina!.
nearsightedness affects about 25% of Americans.
shortsightedness is diagnosed by discovering a child’s unaided vision and is confirmed objectively by the eye practitioner with various techniques, including retinoscopy and refraction.
To work out how badly myopic you are and the specific nature of your myopia, more tests will need to be conducted. This will help to determine the type of eye glasses that you will need. The optician will assess visual acuity, visual movements and the ability to focus on nearby targets. They may need to dilate the pupil to see if there are any rare or alarming complications.
The optician may deliberately choose to dilate a child’s pupils to prevent their natural tendency to over focus confuse the prescription generation process. .
shortsightedness is most commonly treated with spectacles or specs. myopia in preschool children does not need to be corrected with specs, unless either anisometropia, a condition in which there is a difference of more than 1.00 diopters between the two eyes, or amblyopia, a condition in which a child cannot be corrected to 20/20 with spectacles, is present.
For learning to take place at school, it is vital that they can focus on far away targets. So, if your child has shortsightedness, make sure that they have their eyes formally assessed every 6 months or so to ensure that they have the correction spectacles that they require.
Spectacles will commonly need to be worn all the time. There are a few children who have a rare problem with converging their eyes and they may need to actually remove their eyeglasses for when they need to do close up work.
