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Physiotherapy > Light Therapy > Flashcards

Light Therapy Flashcards

1
Q

What is the DEFINITION of LIGHT THERAPY?

A
  • Use of light (electromagnetic wave) for therapy
  • AKA Phototherapy
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2
Q

What are the WAVELENGTHS on the ELECTROMAGNETIC SPECTRUM?

A
  • Infrared Light = 760 - 10,000 nm
  • Visible Light = 380 - 760 nm
  • UV Light = 180 - 380 nm
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3
Q

What are the Wavelengths of the DIFFERENT Ultraviolet Light (UV) and their functions?

A
  • UVA = 315 - 380 nm - causes PIGMENTATION
  • UVB = 280- 315 nm - causes ERYTHEMA
  • UVC = 180 - 280nm- it is BACTERICIDAL
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4
Q

What do the EFFECTS of Light, depend on?

A
  • Amount of Light Absorbed
  • Intensity of Exposure
  • Duration of Exposure
  • Type of Radiation
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5
Q

What is INFRARED Light?

A
  • Type of EXOGENOUS Heat
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6
Q

What are the PROPERTIES of IR?

A
  • Wavelength = 760 - 10,000nm
  • Penetration = 1 - 2cm
  • NOT permeable thru WATER
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7
Q

What are the PHYSIOLOGICAL EFFECTS of IR?

A
  • THERMAL Effect = Exogenous Heat
  • Trophic / Anti-inflammatory / Analgesic / MM Relaxation Effect = Hyperaemia / Peripheral Nerve Irritation
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8
Q

What are the THERAPEUTIC EFFECTS of IR?

A
  • INCREASED Extensibility of CT = MM Relaxation
  • Trophic Effect = Stimulates Metabolism
  • Analgesic
  • Anti-inflammatory
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9
Q

What are the CLINICAL APPLICATIONS for IR?

A
  • TROPHIC Effect = Wound / Bell’s Palsy
  • ANALGESIC Effect
  • Musculoskeletal Disorders = Osteoarthritis
  • ANTI-INFLAMMATORY Effect = ENT Disorders
  • INCREASED Extensibility of CT = MM Spasm / Joint Stiffness / Spasticity
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10
Q

What are the CONTRAINDICATIONS of IR?

A
  • Thermal-Sensitivity Disorders
  • Malignancies
  • Acute Inflammation = As heat INCREASES Oedema
  • Bleeding / Haematomas
  • PURULENT Inflammation
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11
Q

What is VISIBLE Light?

A
  • Type of EXOGENOUS Heat
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12
Q

What are the PROPERTIES of Visible Light?

A
  • Wavelength = 380 - 760 nm
  • Penetration = 1 - 2mm
  • CAN PASS thru Water + Glass
  • NOT Opaque Objects
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13
Q

What are the PHYSIOLOGICAL EFFECTS of VISIBLE Light?

A
  • CNS = Improves mood
  • Endocrine System = The Hypothalamus + Pituitary Gland
  • THERMAL Effect = Since it’s Exogenous
  • BLUE Visible Light = Affects Bilirubin levels
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14
Q

What CLINICAL APPLICATION is Visible Light used for?

A

JAUNDICE of the new-born

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15
Q

What are the PROPERTIES of UV Light?

A
  • Wavelength = 180 - 380 nm
  • Penetration = 0.5mm

THRU QUARTZ / Glass / Clean air
** NOT ORDINARY** Glass

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16
Q

What are the CLINICAL APPLICATIONS of UV Light?

A

SUBERYTHEMAL Doses

  • Locally = Rhinitis / Pharyngitis / Wounds
  • Generally = DM / Obesity / Allergies / Rickets

ERYTHEMAL Doses = Neuritis / Neuropathy / Joint Inflammation / Rhinitis

SEGMENTARY / REFRACTORY Doses = Erythemal Collar

17
Q

What are the PHYSIOLOGICAL Effects of UV Light?

A
  • PHOTO-ELECTRIC Effect
  • PHOTO-CHEMICAL Effect = Causing Protein Denaturation / DNA Destruction
18
Q

What are the CONTRAINDICATIONS of UV Light?

A
  • Area around eyes = WEAR GOGGLES
  • Skin Tumours
  • HIGH Skin Sensitivity Disorders = Lupus / Thyrotoxicosis
19
Q

What are the TYPES of SKIN SENSITIVITIES to UV-B (Erythema)?

A
  • SEASONAL = Sensitive in Winter
  • REGIONAL = Diff Parts of Body such as - Abdomen / Lumbar / Chest / Back
  • INDIVIDUAL = Depends on Age / Gender / Race
20
Q

What is the DEFINITION of BIODOSE?

A
  • It’s the MINIMAL TIME used for UV Light to cause SLIGHT ERYTHEMA with CLEAR MARGINS
  • AFTER EXPOSURE from 50cm Distance
21
Q

What is PUVA Therapyand it’s CLINICAL APPLICATION?

A
  • Form of UV-A (Pigmentation) Therapy
  • Used to treat PSORIASIS = Using a drug called, PSORALEN (oral)
22
Q

What is the DEFINITION of LASER LIGHT?

A
  • Light
  • Amplification

by

  • Stimulated
  • Emission

of

  • Radiation
23
Q

What are the PROPERTIES of LASER Light?

A
  • Monochromatic (1 wavelength)
  • MINIMAL Divergence of waves
  • Polarised + Parallel
  • Coherent
24
Q

What are the PHYSIOLOGICAL Effects of LASER Light?

A
  • Trophic = For HEALING
  • Pain-relief
  • Anti-inflammatory
  • Thermal
25
Q

What are the TYPES of Lasers?

A

1) PULSE Mode

2) CONTINUOUS Mode*

3) Upto 10 mW = Laser Puncture

4) Upto 25 - 75 mW = Laser Treatment

26
Q

What are the CLINICAL APPLICATIONS of Laser?

A
  • Musculoskeletal = Fracture Healing
  • Neurological = Neuritis / Herpes Zoster
  • Inflammatory = RA
  • Dermatological
27
Q

What are the CONTRAINDICATIONS of Laser?

A
  • Eye Area
  • Tattoos / Freckle = They absorb light differently
  • Endocrine Glands
  • Malignancies
  • Metal Implants
  • Epilepsy
  • Pregnancy
28
Q

What are the SKIN REACTIONS for IR, Visible and UV Light?

A

IR Light = Erythema Caloricum (THERMAL)

Visible Light = Erythema Caloricum (THERMAL)

UV Light = Erythema Photoelectricum (UV Exposure)

Physiotherapy (23 decks)

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