On this Wikipedia the language links are at the top of the page across from the article title. Pure alexia, also known as agnosic alexia or alexia without agraphia or pure word blindness, is one form of alexia which alexia fries up “the peripheral dyslexia” group.

Pure alexia is also known as: “alexia without agraphia”, “letter-by-letter dyslexia”, “spelling dyslexia”, or “word-form dyslexia”. Pure alexia results from cerebral lesions in circumscribed brain regions and therefore belongs to the group of acquired reading disorders, alexia, as opposed to developmental dyslexia found in children who have difficulties in learning to read. The patient can still write because the pathways connecting the left-sided language areas to the motor areas are intact. However, many people with pure alexia are able to identify and name individual letters over time as well as recognize sequences of letters as words.

Studies have shown that pure alexia may be a result of a disconnection syndrome. Pure alexia exhibits some unexpected residual abilities despite the inability to read words. For instance, one patient had preserved calculation capabilities such as deciding which number was greater, and whether a number was odd or even with greater than chance probability. The study showed that the patient was also able to calculate simple arithmetic tasks such as addition, subtraction, and division, but not multiplication, even though the patient could not read the numbers.