Publications by authors named "Megumi Saiki"
Purpose: To evaluate the accuracy of intraocular lens (IOL) power calculations using ray tracing software in patients who had undergone phototherapeutic keratectomy (PTK).
Methods: In this retrospective case series, 37 eyes of 22 patients (mean age: 69.4 years; range: 56 to 85 years) who underwent cataract surgery after PTK were reviewed.
Purpose: To compare the accuracy of several methods of intraocular lens (IOL) power calculations used for cataract surgery in eyes treated with phototherapeutic keratectomy (PTK) that results in changes in the anterior corneal surface and axial length; these results make power calculations less predictable.
Methods: We evaluated the medical records of 23 eyes of 13 patients (mean age, 68.8 years; range 62-80 years) who underwent cataract surgery after PTK at Keio University Hospital, Tokyo, Japan.
Purpose: To evaluate the effect of neodymium:YAG (Nd:YAG) laser capsulotomy on the visual function in patients with posterior capsule opacification (PCO) and good visual acuity.
Setting: Keio University Hospital, Tokyo, Japan.
Design: Observational case series.
Purpose: To evaluate visual function in patients with early presbyopia using the functional visual acuity (FVA) test.
Methods: This study included 27 eyes of 27 healthy older volunteers (mean age, 44.1 ± 2.
Purpose: To study the changes in corneal aberrations after cataract surgery.
Methods: This study comprised 36 eyes of 36 patients (mean age, 67.3 years) who underwent cataract surgery through a 2.
Purpose: To assess the effect of laser in situ keratomileusis (LASIK) on near visual function in presbyopic patients.
Design: Retrospective cohort study.
Methods: Fifty-three eyes of 40 patients 45 years of age and older who had undergone LASIK for high myopia (-6 diopters [D] and over) were included.
Purpose: To evaluate the accuracy of intraocular lens (IOL) power calculations using ray tracing software in eyes after myopic laser in situ keratomileusis (LASIK).
Methods: Twenty-four eyes of 17 cataract patients who underwent phacoemulsification and IOL implantation after myopic LASIK were analyzed retrospectively. The IOL power calculation was performed using OKULIX ray tracing software.
Purpose: To evaluate surgically induced changes in corneal, internal, and ocular higher-order aberrations (HOAs) after phakic intraocular lens (PIOL) implantation and compare them between two PIOLs with different pupillary diameters.
Methods: Twenty-three eyes with an Artisan PIOL (Ophtec BV, Groningen, The Netherlands) (Artisan group) and 30 eyes with an Artiflex PIOL (Ophtec BV) (Artiflex group) were retrospectively evaluated. The corneal, internal, and ocular HOAs and refractive data were recorded preoperatively and 6 months postoperatively.
Purpose: To propose the new anterior-posterior method (A-P method) that does not require historical data to calculate intraocular lens (IOL) power after laser in situ keratomileusis (LASIK) and to compare the accuracy of the method with other IOL formulas after LASIK.
Setting: Keio University Hospital, Tokyo, Japan.
Design: Case series.
Purpose: To describe 3 cases with deep corneal stromal opacity that occurred several months after corneal cross-linking.
Methods: A 36-year-old man, a 19-year-old man, and a 14-year-old girl underwent corneal cross-linking for their progressive keratoconus. Corneal cross-linking was performed according to the Dresden protocol.
Purpose: To propose the central-peripheral (C-P) method, which requires no data history to calculate intraocular lens (IOL) powers for eyes that underwent laser in situ keratomileusis (LASIK), and compare the accuracy of the C-P method with other IOL formulas for eyes after LASIK.
Methods: Sixteen patients with cataract (25 eyes) who underwent myopic LASIK were analysed retrospectively. The C-P method is a modified double-K method using the SRK/T formula, in which the estimated pre-LASIK keratometric power calculated from the post-LASIK peripheral anterior sagittal power (also called the axial power) is used for the Kpre in the double-K method using the SRK/T formula, and the post-LASIK anterior sagittal power is used for the Kpost.
Purpose: To describe a new method of alignment of toric intraocular lenses (IOLs) and evaluation of their rotation errors using anterior segment optical coherence tomography (AS-OCT).
Methods: Twenty-nine eyes of 22 patients who had cataract extraction and implantation of an acrylic toric IOL were included. The new AS-OCT method was used for the alignment of toric IOLs and evaluation of their rotation errors.
Purpose: To evaluate the changes in functional visual acuity before and after neodymium:YAG (Nd:YAG) laser capsulotomy.
Setting: Keio University Hospital, Tokyo, Japan.
Design: Case series.
Purpose: To evaluate the predictability of total postoperative spherical aberration after aspheric intraocular lens (IOL) implantation using preoperative corneal spherical aberration.
Setting: Keio University Hospital, Tokyo, Japan.
Methods: Corneal and ocular higher-order aberrations (HOAs) were analyzed preoperatively and postoperatively in eyes having cataract extraction with aspheric IOL implantation.
Purpose: To evaluate the long-term efficacy of a biconvex accommodating intraocular lens (IOL) to restore near visual performance.
Setting: Department of Ophthalmology, Keio University Hospital, Tokyo, Japan.
Methods: This 4-year study comprised eyes that had cataract surgery with implantation of a 1CU accommodating IOL.
Effect of age on changes in anterior chamber depth and volume after laser in situ keratomileusis.
J Cataract Refract Surg
November 2009
Purpose: To evaluate the effect of age on anterior chamber depth (ACD) and anterior chamber volume (ACV) after laser in situ keratomileusis (LASIK) for myopia.
Setting: Department of Ophthalmology, Keio University School of Medicine, and a private clinic, Tokyo, Japan.
Methods: In this retrospective study, patients who had uneventful LASIK for myopia or myopic astigmatism were divided into 2 groups: younger (younger than 40 years) and older (40 years and older).
Purpose: To report the changes in functional visual acuity in cataract surgery patients with good pre- and postoperative visual acuity.
Methods: Functional visual acuity was evaluated in 13 eyes of 10 patients before and 1 month after phacoemulsification with implantation of acrylic intraocular lenses. Pre- and postoperative best spectacle-corrected visual acuities (BSCVA) were better than 20/25 in all patients.
Purpose: To evaluate the status of periglandular inflammation, ocular surface and tear function alterations in patients with obstructive meibomian gland disease (OMGD) by in vivo confocal microscopy before and after anti-inflammatory treatment, and to compare the results with patients receiving only topical non-preserved artificial tears and sodium hyaluronate eye drops without anti-inflammatory agents.
Methods: Thirty-two eyes of 16 OMGD patients receiving anti-inflammatory treatment (treatment group) and 22 eyes of 11 OMGD patients receiving only topical non-preserved artificial tears and sodium hyaluronate eye drops (control group) were recruited in this prospective study. All subjects underwent slit-lamp examinations, tear film break-up time (BUT) measurements, fluorescein and Rose-Bengal stainings, Schirmer test capital I, Ukrainian without anesthesia, transillumination of the lids (meibography), and in vivo laser confocal microscopy of the lids (HRTII-RCM).
Purpose: To evaluate the effect of spherical aberration on visual function under natural pupil conditions after cataract surgery.
Setting: Keio University Hospital, Tokyo, Japan.
Methods: This study comprised cataract patients who had cataract extraction with implantation of an acrylic intraocular lens.
Purpose: To evaluate anterior chamber angle alterations after phakic intraocular lens (pIOL) implantation using the Pentacam rotating Scheimpflug camera (Oculus) and the effect on intraocular pressure (IOP) and anterior chamber inflammation.
Setting: Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.
Methods: Twenty eyes of 11 patients with high myopia who had implantation of pIOLs (Artisan/Verisyse, model 204, Ophtec BV) were included.