2 doctors weighed in:

My son have colour visiondeficiency although there is no history of inheritance from either side. His eye checkup is normal. Pl suggest?

2 doctors weighed in
Dr. Bruce Saran
Ophthalmology

In brief: Retest

Most color vision deficits are inherited through the mother. On the x chromosome.
Females of the family are carriers of the gene but only males are affected. Rarely a child can have a new genetic defect. The diagnosis is made by a trained pediatric ophthalmologist or retina specialist. Reading vision can be normal.

In brief: Retest

Most color vision deficits are inherited through the mother. On the x chromosome.
Females of the family are carriers of the gene but only males are affected. Rarely a child can have a new genetic defect. The diagnosis is made by a trained pediatric ophthalmologist or retina specialist. Reading vision can be normal.
Dr. Bruce Saran
Dr. Bruce Saran
Thank
Dr. Richard Bensinger
Ophthalmology

In brief: Maternal inheritanc

If you son has classic color deficiency, it is on his x chromosome which he got from his mother. She herself would probably be color normal and her abnormal x would have gotten to her from either parent - her mother (your son's grandmother) if that is the source, would also be color normal.
He will have normal sons but daughters who will all be carriers without color deficit themselves.

In brief: Maternal inheritanc

If you son has classic color deficiency, it is on his x chromosome which he got from his mother. She herself would probably be color normal and her abnormal x would have gotten to her from either parent - her mother (your son's grandmother) if that is the source, would also be color normal.
He will have normal sons but daughters who will all be carriers without color deficit themselves.
Dr. Richard Bensinger
Dr. Richard Bensinger
Thank
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