Live stream preview

Watch this video and more on EyeTools.Education

Watch this video and more on EyeTools.Education

Subscribe Learn more

Already subscribed? Sign in

PRE007 Prism cover test

Pre-refraction procedures • 21s

Up Next in Pre-refraction procedures

  • PRE008 Near point of convergence

    The near point of convergence is the point where visual axes intersect under maximum convergence effort while binocular single vision is maintained. Some practitioners measure the near point of convergence routinely, but especially when a patent presents with near vision symptoms.

  • PRE010 Amplitude of accommodation

    This is a measure of the maximum amount of accommodation an individual can exert. It can be described as the dioptric distance between the near and far points of accommodation and is usually measured using the RAF rule. It should be conducted monocularly and binocularly and may be repeated two or...

  • PRE011 TNO test

    The measurement of stereoacuity is important as it gives an indication of the integrity of the binocular visual system. When the level of stereoacuity is within expected ranges then normal motor and sensory function are present. It is particularly useful for evaluating binocular vision in childre...