How to refract

Apr 27, 2017 by in OPHTHALMOLOGY Comments Off on How to refract

Figure 4.1 Correct fitting of a trial frame with each pupil in the centre of each aperture, both horizontally and vertically. Back vertex distance Place a lens (of any value)…

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What does refractive error mean?

Apr 27, 2017 by in OPHTHALMOLOGY Comments Off on What does refractive error mean?

Figure 3.1 Emmetropia: light from a distant object forms an image on the retina Refractive error (ametropia) ‘Refractive error’ (ametropia) means that an eye does not allow light from a…

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How to use a focimeter

Apr 27, 2017 by in OPHTHALMOLOGY Comments Off on How to use a focimeter

Figure 6.1 A focimeter Recording distance prescription Turn the focimeter on and set the focusing wheel to zero. Then turn the viewing eyepiece fully anticlockwise and look down the eyepiece,…

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The Refraction Certificate Examination

Apr 27, 2017 by in OPHTHALMOLOGY Comments Off on The Refraction Certificate Examination

Room 2 Station 4: Cycloplegic retinoscopy 3 – first eye of a patient. Station 5: Cycloplegic retinoscopy 4 – second eye of the same patient. Station 6: Lens neutralisation with…

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