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Credit Designation Statement: Amedco designates these enduring material videos for a maximum of .25 AMA PRA Category 1 CreditsTM each. Physicians should claim only the credit commensurate with the extent of their participation in the activity.
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Target Audience: Ophthalmologists with an interest in cataract surgery.
Learning Objectives: To demonstrate the use of both wavefront and standard manifest refraction to assist in the determination of the desired IOL power in a highly myopic eye with increased axial length and posterior staphyloma.
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Episode 23: The Aphakic Refraction Technique
Determination of the correct IOL power for a highly myopic eye with posterior staphyloma is fraught with difficulty. Here I employ two methods that can permit measurement of both the spherical and astigmatic power of the desired IOL, including the degree of "retinal astigmatism" caused by the staphyloma. I demonstrate the use of both wavefront technology and the Aphakic Refraction Technique (manifest refraction) to calculate the power of the IOL that is then inserted on the day following cataract removal.
Richard J. Mackool, MD Financial disclosure: Consultant to Alcon, Diopsys. Proprietary interest in MST, Impex.