Publications by authors named "Beom-Jin Cho"
Multifocal intraocular lenses (MF-IOLs) are increasingly implanted as the need for good near- and intermediate-distance vision increases. Although retinal disease is known to be a relative contraindication for MF-IOL implantation, there are no detailed guidelines for MF-IOL implantation with respect to the type and severity of retinal diseases/statuses. In this study, because retinal diseases can affect the performance of MF-IOLs, we analyzed the opinions of 111 retinal specialists, who were members of the Korean Retina Society, on the implantation of diffractive MF-IOLs in eyes with 15 retinal diseases/statuses using a web-based survey.
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- - The study aimed to assess how well measurements of eye dimensions from the IOLMaster 700 (a type of optical biometry) compare to other devices in cataract patients, looking specifically at axial length, anterior chamber depth, keratometry, and white-to-white distance.
- - Results showed that the axial length measurements from the IOLMaster 700 were highly consistent with those from the IOLMaster 500 and A-scan, while the anterior chamber depth showed less agreement with the A-scan and variable results with Galilei G4.
- - The researchers concluded that while the IOLMaster 700 can generally be used in place of the other tested devices for certain measurements, some specific values (like ACD and
Purpose: To evaluate and compare visual acuity and reading speed for Korean language between a diffractive bifocal and trifocal intraocular lens (IOL) of the same material and haptic design.
Methods: We reviewed the medical records of the patients who had undergone bilateral cataract surgery with bifocal IOLs (AT LISA 801) on the both eyes (bifocal group) and trifocal IOLs (AT LISA tri 839 MP, trifocal group). The main outcome measures were the uncorrected distance, intermediate, and near visual acuity (uncorrected distance visual acuity [UCDVA], uncorrected intermediate visual acuity [UCIVA], and uncorrected near visual acuity [UCNVA]) and corrected distance, near, and distance-corrected intermediate visual acuity (corrected distance visual acuity [CDVA], corrected near visual acuity [CNVA], and distance-corrected intermediate visual acuity [DCIVA]) at last postoperative follow-up month.
Purpose: To report the development of an opaque bubble layer (OBL) during small incision lenticule extraction (SMILE) and analyze its potential risk factors and the clinical outcome.
Methods: A retrospective review of medical records was performed. The patients were divided into two groups in terms of OBL area following a posterior lenticule cut: OBL less than 5% of cornea and OBL greater than 5% of cornea.
Purpose: To assess the accuracy and validity of true net corneal power of the Pentacam system to provide a keratometry reading for calculating intraocular lens (IOL) power in postoperative refractive surgery eyes.
Methods: Refraction, an automated keratometry reading, and true net corneal power were measured for 30 eyes that required cataract surgery and had previously undergone refractive surgery. Target refraction values calculated with the SRK/T formula using true net corneal power were compared with postoperative manifest refraction values.
Purpose: To compare the accuracy of central true net corneal power (cTNP) and mean true net corneal power (mTNP) of the Pentacam system to give a keratometry (K) reading for calculating IOL (intraocular lens) power in eyes following refractive surgery.
Methods: Refraction, an automated K-reading (Km), cTNP and mTNP were measured for 15 eyes that required cataract surgery and had previously undergone refractive surgery. The difference between postoperative manifest refraction values and target refraction values calculated with the SRK/T formula using cTNP were compared with the one using mTNP.
Purpose: To evaluate the structure-function relationships between retinal sensitivity measured by Humphrey visual field analyzer (HVFA) and the retinal nerve fiber layer (RNFL) thickness measured by scanning laser polarimetry (SLP) with variable corneal compensation (VCC) and enhanced corneal compensation (ECC) in glaucomatous and healthy eyes.
Methods: Fifty-three eyes with an atypical birefringence pattern (ABP) based on SLP-VCC (28 glaucomatous eyes and 25 normal healthy eyes) were enrolled in this cross-sectional study. RNFL thickness was measured by both VCC and ECC techniques, and the visual field was examined by HVFA with 24-2 full-threshold program.
Purpose: The purpose of this study was to quantify the effect of mitomycin C on rabbit keratocytes, with a view to determining its potential in modulating corneal stromal wound healing. In addition, the pathway by which this regulation occurs was investigated.
Methods: Keratocytes were isolated from New Zealand White rabbits and cultured.
Purpose: To report a case of corneal co-infection of Stenotrophomonas maltophilia and Aspergillus fumigatus.
Methods: We describe a culture and biopsy proven infectious keratitis with a large, brown, round anterior chamber mass attached to the endothelium.
Results: Stenotrophomonas maltophilia was cultured from external scrapings of a corneal ulcer and septate hyphae were stained with Gomori's methenamine silver(GMS) stain along the wall of the excised intracameral mass.