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Effect of chronic lithium on sensitivity to light in male and female bipolar patients.

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Department of Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada.


1. Sensitivity to white light was quantified in euthymic bipolar male and female patients maintained on long term lithium therapy and age and sex matched unmedicated controls. 2. The Dark Adaptation Threshold procedure was used to assess sensitivity of both the cone and rod photoreceptors to short pulses of light. 3. Male and female controls did not differ in sensitivity to light. 4. Male patients in comparison to both controls and female patients evidenced reduced sensitivity to light during the cone and rod portion of the dark adaptation procedure. 5. Female patients did not differ from controls on sensitivity to light. 6. Using these and other published data the results were interpreted as suggesting that lithium reduces sensitivity to light during adaptation to dark.

[Indexed for MEDLINE]

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