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Visual Fields

Visual Fields. Constrictor pupillae muscle. Damage to Right CNII: Right direct response Left consensual response Left direct response Right consensual response Damage to Right CNIII: Right direct response Left consensual response Left direct response Left consensual response.

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Visual Fields

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  1. Visual Fields

  2. Constrictor pupillae muscle • Damage to Right CNII: • Right direct response • Left consensual response • Left direct response • Right consensual response • Damage to Right CNIII: • Right direct response • Left consensual response • Left direct response • Left consensual response

  3. Damage to Right CNII: • Right direct response: Absent • Left consensual response: Absent • Left direct response: Present • Right consensual response: Present • This occurs as the right eye cannot sense any light but still has CNIII innervation. • Damage to Right CNIII: • Right direct response: Absent • Left consensual response: Present • Left direct response: Present • Left consensual response: Absent • Here the side that is damaged lacks the ability to activate constrictor pupillae but can still sense light.

  4. Clinical Point: Argyll-Robertson Pupil • Seen in tertiary neuro syphilis • Get no pupillary light reflex but still have accommodation. • Mechanism to produce it is unclear.

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