Intraocular lens power calculation. A retrospective analysis of its practical value.
Two hundred and two consecutive intraocular lens (IOL) implantations, the lens power being predicted with the SRK-method, are retrospectively analyzed, and the factors possibly influencing the error in IOL power prediction are evaluated. The actual post-operative refraction is compared to the expected refraction for each IOL and to a hypothetical refraction that would have been obtained by a standard-power IOL implant. Axial length measurement and a high pre- and post-operative astigmatic error, along with low- and high power IOL predictions, are the factors that most influence the post-operative refractive error. A similar distribution of post-operative refraction could have been obtained by using a standard-power IOL instead of pre-operative calculation.
Department of Ophthalmology, University Central Hospital, Kuopio, Finland.
H J
HJ
Rouhiainen
D006801:Humans; D007910:Lenses, Intraocular / Q000009:adverse effects / Q000592:standards; D012029:Refraction, Ocular; D012189:Retrospective Studies