Hello,
first of all, I should say that English is not my native language, so
please forgive me and take it into account if I write something wrong.
My little son doesn't see as good as he was supposed to. He just turned
4 months old, and he has been diagnosticated with a nystagmus of the
horizontal symmetric pendular variant, and a "rarefaction of the retinal
pigment" (is it the same as saying hypopigmentation of the retina?). He
has no strabism, no photophobia, nor iris translucency. He will go through
other examinations in the next days and months, for many of them it's
still too early (e.g. Visual Evoked Potential) and we've to wait until
he's 6 months old at least.
I ask you, is it probably Ocular Albinism or it can be already excluded,
due to the absence of photophobia and iris translucency, let away of the
strabism? Neither I nor my wife are albin, we're just a bit myopic, but
apart that we both have an excellent visual acuity. As memory serves, we
have no albin relatives in either families, nor any cases of nystagmus.
We also have a daughter, 2 years old, and she has an excellent visual
acuity and no eye problems whatsoever, not even any myopia (she can say
who's coming from a hundreds meter distance!).
Anyway, what else could it be, in case it was not Ocular Albinism?
Is there anything I can do at least to improve the clinical situation?
I would want to also ask: the rarefaction of the retinical pigment causes
the loss of stereoscopic vision (abnormal chiasm) only in case of Ocular
Albinism, or whatever is the cause of rarefaction of the retinical
pigment?
In other words, I mean, is this abnormal chiasm development linked to OA
directly, or any rarefaction of the retinical pigment in the absence of OA
would cause it as well?
At which age does the (abnormal or not) development of the chiasm
completes?
To someway oppose the evolution of the nystagmus, that I reckon has been
caused not by brain damage but by the bad visual acuity, I have thought
about making a video with images (lines, grids, points, etc.. moving on
screen) with high contrast, coloured and non, to someway help my baby's
brain to "link" the images on the retina, by optimizing to the maximum his
visual acuity (thanks to the high contrast, geometrically simple images),
in the hope that this could train the arcaic (I've read the mesencephalon
is involved) and subconscious of the eye muscles coordination that
nystagmus
shows to not be working.
At which age does the retina and the visual apparatus in general conclude
its development?
Thank you very much,
Fabio
elektronix <chiocciola> infinito.it
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