English to Italian Medical Medical: Instruments Distance chart

Establish a method of communication such as naming (signing) or pointing (matching).
Decide with the child which names will be used to identify the symbols.
When needed, train with the LEA Puzzle, **Response Key Card**, or Flash Cards.
Briefly point to the first symbol in each line in descending order when testing binocularly.
Do not leave the pointer close to the symbol because it makes fixation easier, especially in case of amblyopia, lazy eye.
If the child seems to have difficulties in knowing which line to look at, cover the line above the line to be read with a white card leaving a little of the upper line visible.
Move down until the child hesitates or misidentifies a symbol.
Move back up one line and ask the child to identify all the symbols on that line.
If the child identifies all symbols correctly go to the next line with smaller symbols and ask the child to identify all symbols on the line.

That sentence depicts the difficulty in keeping the details apart from each other when the posterior pathways are damaged.
Single symbol acuity may be normal or near normal.
Visual acuity measured with crowded symbols approximates the smallest text size that the child will be able to read.
It is NOT equivalent to the print size used in learning because nobody likes to read at the level of threshold.
We usually read texts that are 3-10 times larger than the threshold size.
The test is supplied with training cards and a response key.
For convenience, the test has a **response key** line at the bottom.

Avevo pensato di lasciarlo in inglese, ma poi ho trovato 'response key line' e quindi penso proprio che vada tradotto.
Ottotipo chiave di risposta/reazione? Riga chiave di risposta/reazione?