Kimberly wrote:
My 2 year old son was recently diagnosed with a +7 in both eyes by an optometrist. My pediatrician wants a second opinion, as we do, and is sending us to a Pediatric Opthalmologist. My question is, would my son love to play with puzzles and read books all day long if his eyes were this bad?
We were shocked because he points out tiny details in all his books (in the dark!) before bedtime.
ANSWER
Dear Kimberly,
I am more than happy that you are concerned with your children vision. You are talking about important issues here. Your optometrist is surely more than competent but your pediatrician is right to send you for another opinion. My first recommendation would be do not delay this appointment (less than a month) since your children, based on the +7,00 findings, has to be corrected (visually speaking) as soon as possible. The development of each eye, separately, and of his binocular vision (coordination of the 2 eyes leading to 3D vision) are in play. Here is why…
At 2 years old, it is not rare to find children with hyperopia, which is the case of your child. However, +7,00 is a lot ! Too much for the system to handle by itself. Habitually, the level of hyeropia is around +2,00 or less at this age and fades away as the child is growing up. This is considered a normal evolution in the development of a normal visual system.
Hyperopia means that the images seen through the eye focus behind the back of the eye (retina). When they cross the retina, the images are blurred. More severe the hyperopia is, the more blurred are the images. When this blur is interpreted by the brain, the natural crystalline lens of the eye receives the signal to act like a zoom of a camera and to make appropriate adjustments to this image. This helps the children to see clearly. Consequently it is not surprising that your children seems to see weel. It is because his natural “focusing” reflex is working well. However, to compensate for a +7,00 instead of a +2,00 means the same thing that to ask him to raise a bar of 10kg above his head while is capacity does not exceed 3 kg. He can do that for short term period of time but not on a long term basis. This is why many high hyperopes patients can see well at far and at near but can not stand a near task for more than several minutes. They change their target most often: drawing for 3-4 minutes, looking at TV for 2 minutes, playing ball for 10 minutes. Habitually these patients are more active in sports and outdoors activities than at near, contrary to the myopes who are good and strong readers. Some hyperopic children are even considered hyperactive while their lack of attention comes only from their visual condition. Later, patients with uncorrected high hyperopia develops headache, malaise and can have strabismus also.
At this point, to make sure that your child will have all the tools necessary to fully develop his vision, it is important to confirm the level of hyperopia by performing an oculo-visual examination under cycloplegia. The eye doctor (your optometrist (more competent to evaluate that than a pediatrician) or an ophthalmologist) will instill some drops in the eye of the child. This product will sting a little bit but drops create, for 24h00, a paresis of the crystalline lens function (pupil is also dilated in the process). This is the goal of this procedure: to cancel the effect of the crystalline lens to measure accurately the full amount of hyperopia – This will determine the level of visual correction needed.
Visual system develops in the first 6 to 8 years of life. By the age of 6 months, each eye should be as developed as adult’s ones. Between 6 months and 6 years, the brain integrates the images coming from each eye and coordinates them in order to create 3D vision. At 2 y.o. a level of +7,00 is considered amblyogenic if not corrected. That means that even if the children seems to see well, his vision will never develop at its full capacity if the eyes remains uncorrected. The compensation for the blurring coming from +7,00 D hyperopia is too much for the system to handle. This is why your child needs a correction by glasses as soon as possible. Any delay creates can alter his visual development furthermore. It will be harder to fill in the gap in the future if a correction is not prescribed and worn sooner than later.
Consequently please make sure that your appointment with the ophthalmologist will be given in the following days or weeks (not months) and if the hyperopia is confirmed (I have no doubt about it- your optometrist cannot miss that) the prescription of glasses for a full time wear should be filled in rapidly. A close follow-up of the visual development will be mandatory.
In the future, the hyperopia will probably decrease but from +7,00 it is quite sure that the children will always have the need to wear visual correction, at least to read, do computer work, to study, etc. As soon as he will be able to collaborate enough to read some letters or pictures at far and at near (usually by the age of 3) the vision will be assessed. Any lack of development (amblyopia) will have to be addressed at this time- Orthoptics (visual exercices), penalization (to occlude one eye at the time to favour the development of the other) or other techniques could be proposed to improve the final outcome. By the age of 7-8 y.o. contact lenses can be considered. They provide sharp and clear vision without the burden of thick glasses. They are well accepted by the young patients but they involve some parents help for the cleaning and handling of the lenses. A new study done at Ohio State University proved that they are a safe alternative to glasses for higher prescriptions.
I am quite confident that with a proper prescription and follow-up your children will see well and will develop all his visual skills in order to be successful in life.
Best regards,
Langis Michaud