Accuracy of intraoperative aberrometry versus preoperative biometry for intraocular lens power selection in short and long eyes.

Background: To compare the accuracy of intraoperative wavefront aberrometry using the ORA VLynk system with different biometry-based formulas in short and long eyes after cataract surgery.

Methods: This prospective study considered 48 eyes with axial lengths of <22.1 mm and 48 eyes with axial lengths of >25.

Assessment of corneal epithelial thickness mapping by spectral-domain optical coherence tomography.

Background: To assess corneal epithelial-thickness (ET) mapping resulting from spectral-domain-optical-coherence-tomography (SD-OCT) by analysing its repeatability and reproducibility and its utility for screening corneal-refractive-surgery (CRS) candidates.

Methods: ET was measured in 25-sectors by two-operators. Intra-subject-standard-deviation, coefficient-of-repeatability (CoR) and coefficient-of-variability (CoV) were calculated to evaluate repeatability.

Axial length acquisition success rates and agreement of two swept-source optical biometers in eyes with dense cataracts.

Background: Swept-source optical coherence tomography-based (SS-OCT) biometers have been used in different clinical studies with the aim of assessing the accuracy of the technique, specifically in eyes with dense cataracts. Our objective is to evaluate the axial length acquisition success rates and agreement of two SS-OCT biometers when measuring axial length and biometric parameters in eyes with dense cataracts.

Methods: 46 eyes (46 patients) with dense cataracts (LOCS III grade ≥ 4) were measured 3 consecutive times using the Eyestar 900 and Argos SS-OCT biometers.

Recognition vs resolution charts for defocus curve determination in trifocal intraocular lenses.

Purpose: To determine the impact of optotype choice on the determination of defocus curve in patients with cataract implanted with presbyopia-correcting intraocular lens (IOL).

Setting: Oftalvist Alicante, Alicante, Spain.

Design: Observational case-control study.

Precision of a new SS-OCT biometer to measure anterior segment parameters and agreement with 3 instruments with different measurement principles.

Purpose: To evaluate the repeatability of a new swept source optical coherence tomography (SS-OCT)-based biometer to measure anterior segment parameters and to assess the agreement with 3 other imaging devices based on different measurement principles.

Setting: Unit of Eye and Vision, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden.

Design: Prospective, comparative case series.