Publications by authors named "Manabu Koshimizu"
Article Synopsis
- A new method for calculating intraocular lens (IOL) power was created using paraxial ray tracing and was validated with postoperative data from 474 eyes, divided into training and validation sets.
- The training data led to a regression formula that predicts postoperative anterior chamber depth, while the validation data analyzed refractive values based on the structure of the cornea and lens.
- The new formula demonstrated a high accuracy rate (84.3% within ±0.50 diopters) for predicting postoperative refraction, making it suitable for eyes with various shapes and sizes.
Purpose: This study was performed to investigate the relationships among crystalline lens shape, actual intraocular lens (IOL) position, and crystalline lens thickness (LT), as measured by anterior segment optical coherence tomography (AS-OCT), and to determine anterior ocular segment parameters that predict postoperative IOL position.
Methods: Seventy-nine eyes of 79 patients who underwent uneventful cataract surgery were enrolled. For crystalline lens preoperative anterior segment data, the LT, and anterior, equatorial, and posterior surface depths (ASD, ESD, and PSD, respectively) of crystalline lenses were quantitatively determined.
Purpose: Pupillometry should be performed under conditions as close to natural viewing as possible. The present study aimed to determine whether pupil size in binocular open-view settings can be predicted based on pupil size measured using the CASIA2 device.
Methods: The present study included 61 participants (25 men and 36 women; mean age, 49 ± 15 years; age range, 22-69 years) with no history of ophthalmic disease other than refractive errors and cataract.