How many letters does the top answer for “pertaining to a kind of visual impairment without apparent organic pathology” have?

The most common answer is amblyopic (9 letters).

Crossword clue: pertaining to a kind of visual impairment without apparent organic pathology

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

amblyopic 9 letters wn-def

pertaining to a kind of visual impairment without apparent organic pathology