Light Therapy

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LIGHT THERAPY

Meaning
Light therapy sometimes called phototherapy involves exposing the patient to an artificial  light source during winter months to relieve seasonal depression.The light source must be very bright, full spectrum light
Mechanism
·         Blood levels of hormone melatonin is high during certain parts of day. This can be reduced by exposure to light
·         When bright light is presented, body's internal clock which controls daily rhythm will shift ahead or delayed when stimulated by light.
·         This physiological time shift may be basis for therapeutic response.
Process of therapy
·         Simply sitting close to light box, with lights on and eyes open.
·         Looking at lights is not necessary, can engage in activities like reading, writing.
·         Session can last from 15 min to 2 hours, usually one day. Can be split into sessions.
Indications
·         Bulimia
·         Sleep maintenance insomnia
·         Seasonal depression
Contraindications
·         Glaucoma
·         Cataract
·         Use of photosensitizing medications
Nurse's role

The patient is instructed to sit in front of the light at a distance of about 3 feet, engaging in a variety of other activities, but glancing directly in to the light every few minutes The duration of administration is 1-2 hours

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notes.nursium.com: Light Therapy
Light Therapy
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