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Explain the use of CAT scans.
Explain the use of ultrasound.
Describe the use of ultrasound.
Describe the use of endoscopes.
Explain the use of endoscopes.
State the uses of non-ionising radiation in medicine.
State the uses on ionising radiation in medicine.
Define the term myopia.
Define the term hyperopia.
Explain the use of laser eye surgery.
Define the term radiation.
State two factors that can affect the intensity of radiation.
State the equation linking intensity, power of radiation and area.
Explain what causes the refraction of light.
Describe the relationship between the power of a lens and its shape.
State the main feature on the diagram of the eye.
State the parts of the eye involved with focusing the light onto the retina.
State the near point and the far point of the average adult human eye.
Explain the symptoms and cause of short sight.
Explain the symptoms and cause of short sight.
Describe how short sight can be corrected.
Describe how long sight can be corrected.
Describe the law of reflection.
Explain the cause of refraction.
State the equation for calculating critical angle.
Describe the term critical angle.
Explain why total internal reflection occurs.
