How to do spherocylinder Retinoscopy ?

How to do spherocylinder retinoscopy?

Retinoscopy is an objective refraction technique that can estimate a person’s refractive error without 
them needing to say anything to you. 
Retinoscopy should be done for every person that you examine as it gives you information that you 
cannot get any other way. It is also extremely useful for people who cannot communicate with you – 
such as young children or people with mental disabilities – because you can estimate their refractive 
error without needing to do a subjective refraction. 
Doing retinoscopy for every person that you examine will make your refraction faster, more efficient 
and more accurate.


How to perform retinoscopy:

Aim


This unit will teach you how to perform retinoscopy to measure a person’s refractive error objectively.

LEARNING OUTCOMES


When you have worked through this unit you should be able to: 
• explain why retinoscopy is a good refraction technique 
• describe the parts of a retinoscope and know how it works 
• describe the appropriate set-up for doing retinoscopy 
• use a retinoscope to scope the principal meridians of an eye 
• recognise “with”, “against” and neutral ret reflexes 
• neutralise the ret reflex using trial lenses 
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• explain what to do if you have problems seeing the ret reflex.