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| Author | Subject: dispensing |
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 bprajapati
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dispensing
Jun 20, 2007 17:51:37 I recently sat a CDM mock exam. In one of the senarios i was asked to work out what eye size I would dispense to a 5 year old child with a PD of 66mm. How do I work this out??? And what would the bridge size be? |
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Stephen Meynell
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RE: dispensing
Jun 22, 2007 20:49:29 -you can only guestimate this - a five year old child would not have a pd of 66 - so something is well wrong here. A typical man would be 64 and lady 62. # Say a five year old child has a pd of 55. and the bridge would be typically 14 - then the eye size would be 55 - 14 = 41mm - and that is all typical numbers. |