2020–2021 BCSC Basic and Clinical Science Course™
11 Lens and Cataract
Chapter 7: Preoperative Considerations for Cataract Surgery
This chapter includes a related video. Go to www.aao.org/bcscvideo_section11 or scan the QR code in the text to access this content.
When choosing the power of the intraocular lens (IOL) for a cataract surgery, important considerations include axial length, anterior and posterior cornea power, and effective lens position.
Informed consent is important; it includes the indications for surgery, the surgery’s potential risks and benefits, any alternatives to the surgery, the surgical technique, and the IOL options.
Recent studies have demonstrated that optical coherence tomography (OCT)–based IOL calculations and the Haigis-L and Barrett True-K No History formulas offer the lowest rate of error for postrefractive surgery IOL calculations. Intraoperative aberrometry has been shown to have similar accuracy.
The Hill-RBF method for calculating IOL is unique because it uses adaptive learning to update its database and continually improve its IOL power predictions.
Antimicrobial prophylaxis with intracameral antibiotics has been shown to reduce the rate of endophthalmitis.
Excerpted from BCSC 2020-2021 series: Section 11 - Lens and Cataract. For more information and to purchase the entire series, please visit https://www.aao.org/bcsc.