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ENGLISH TRANSLATION Book
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according Accordingly accurately determined Alhacen angle appear arrangement axes intersect brute sensation ceived center of sight centerpoint common axis common nerve cornea creates beauty dark deduction differentiation directly facing dispositio extend extremities eye directly faces the eye faculty of discrimination final sensor form of light form reaches forms of visible Furthermore glacialis Hence hollow Hunayn Ibn Ishaq ible object illuminated impressed ject judged lies light and color light shines line passing magnitude moderate distance Moreover motion moving oblique occurs opacity opaque Optics outer limit perceive the form perceived by sight perception perpendicular plaque portion Ptolemy radial lines rays reaches the eye recognition refracted respect Sabra sclera seen sensitive faculty shape sight perceives sight will perceive soul spatial disposition sphere straight lines subtended things tion transparent body tunics uvea viewer vision visual axis visual perception visual scrutiny visus vitreous humor X X X