Contemplating the end of "the arc of a love affair," working with his longtime New York studio musicians, Mr. Simon fell back on reflexes: light-fingered but familiar grooves and melodic turns, self-absorbed lyrics and only the pensively elegiac "Train in the Distance" to redeem it.
Despite clear pathophysiology and known etiologies, diagnosis of SFN in patients with pure SFN (no damage to the large nerve fibers) is challenging because motor coordination, reflexes, light touch, proprioception, and vibratory sensation often appear normal during examination [ 6].
Empiric evidence from the past three decades has confirmed that, relatively separate from vision and visual reflexes, light incident on the retina can be a potent biological, behavioral, and therapeutic stimulus in humans (Commission Internationale de L'Eclairage 2007).
Animal experiments have shown that, in response to environmental cues, they can repopulate damaged retinas, regrow neuronal axons, repair higher cortical pathways, and restore pupil reflexes, light responses and basic pattern recognition.
Rats that did not exhibit loss of consciousness, corneal reflex, pupillary light reflex, and righting reflex during ischemia were excluded from the experiment.
Eye examination included pupillary reflex to light and accommodation, visual acuity by Snellen chart, colour vision by Ishihara plates, visual fields by confrontation as well as direct and indirect ophthalmoscopy.
This is simply a light reflex event where shining light on the tympanic membrane produces a cone-shaped reflection of light to materialize in the anterior inferior quadrant.
To weight the rod-, cone-, and melanopsin-mediated activation of the retinal ganglion cells, which drive the pupil light reflex by varying the light stimulus wavelength, intensity, and duration.
The pupillary light reflex is tested by letting light fall on the eye and observing whether the pupil adapts to it.
Deep tendon reflexes and light touch sensation were normal.
As determined by the TCNS questionnaire, neuropathic symptoms included numbness, tingling, weakness, foot pain, or ataxia, and neuropathic signs included abnormal knee or ankle reflexes, temperature, light touch, monofilament, or vibration sensation (26).
