Abstract

OBJECTIVE: To identify the importance of an accurate prediction of the pseudophakic anterior chamber depth (ACD) for the calculation of IOL power. STUDY DESIGN: Prospective follow-up after IOL implantation with measurement of the actual pseudophakic ACD 4–6 months after surgery. SETTING: Department of Ophthalmology, Vejle County Hospital, Vejle, Denmark. PATIENTS: 1000 consecutive cases receiving a posterior chamber implant. RESULTS: When the actual pseudophakic ACD was used in the ‘prediction' of the postoperative refraction, a mean error of 0.04 (±0.73 D) was found, which was not significantly different from zero ( P >0.05). The residual error did not show any correlation with the axial length, which ranged from 20.0 mm to 33.9 mm. CONCLUSION: An accurate and unbiased IOL prediction can be achieved with a formalism using theoretical physiological optics and an accurate prediction of the true ACD.

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