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. Author manuscript; available in PMC: 2019 Sep 18.
Published in final edited form as: Somnologie (Berl). 2019 Aug 20;23(3):147–156. doi: 10.1007/s11818-019-00215-x

Table 1. Relative contraindications to light therapy.(Modified from [22]).

Ophthalmological examination recommended in the following conditions
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    Pre-existing diseases of the retina or the eye, e.g. retinal detachment, retinitis pigmentosa, glaucoma

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    Systematic diseases affecting the retina, e.g. diabetes mellitus

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    Previous cataract surgery or lens removal

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    Elderly people (increased risk of age-related macular degeneration; AMD)
Caution needed by patients taking following photosensitizing drugs
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    Neuroleptics (phenothiazines)

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    Antidepressants (imipramine)

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    Mood stabilizers (lithium)

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    Diuretics (hydrochlorothiazide)

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    8-methoxypsoralen

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    Cardiac medications (propranolol, amiodarone)

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    Chloroquine

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    Antibiotics (tetracycline)

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    “Natural medicines” (melatonin, St. John’s Wort)