An individual who has a genetic deficiency of one or more type of cone cells has blindness.

Color blindness is caused by a deficiency or absence of certain types of cones in the retina. True False

When a person is considered to be legally blindGroup of answer choicesthey must be diagnosed by a doctor and the DMV.a vision test determines it, a birth defect or an accident must have caused it.there is a visual loss severe enough that it is not possible to read written materials.glasses cannot help, they are born with the condition and it cannot be reversed.

For about ½ of those children who are blind, it is associated withGroup of answer choicesgenetics.accidents that occur after birth.infections and fevers.Intellectual & Developmental Disabilities & Cerebral Palsy.

Ophelia has two types of cones: those sensitive to red light and those sensitive to green light. Ophelia hasa.normal vision.b.pot blindness.c.colour blindness.d.total blindness.

The condition is which a person is unable to distinguish among certain shades of colors, or even colors at all.Group of answer choicesColor Depletion DeficiencyColor Vision Deficiency or Color BlindnessVisual Acuity LossAll of the above