[Measurement of coaxial position in lens implants]

Intraocular lens implantation occasionally causes binocular diplopia resistant to prismatic correction. Present methods of examination cannot determine the cause of this incurable diplopia. Therefore, a new method based on keratometry has been invented to allow qualitative and quantitative analysis of biomicroscopically undetectable decentration of intraocular lens implants producing asthenopic complaints. The present study investigates the type and frequency of intraocular lens decentration relative to the visual axis.