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Long-term observation of the in vivo safety of a new design of phakic refractive lens.
BMC Ophthalmol
January 2025
Fudan University Eye Ear Nose and Throat Hospital, Shanghai, China.
Background: To evaluate the biosafety, reduction in anterior capsule opacification, and fluctuation in intraocular pressure (IOP) of a new phakic refractive lens (PRL) with a sinusoidal drainage groove design.
Methods: This self-controlled experiment was performed on eight eyes of four rabbits. Each rabbit was implanted with a sinusoidal PRL (PRL-S5) in the right eye and a conventional posterior chamber PRL (PC-PRL) in the left eye.
Characteristics and factors associated with diameter deviation of rhexis reference circle generated by an image-guided system in cataract surgery: a cross-sectional study.
Sci Rep
December 2024
Department of Ophthalmology, Fujian Provincial Hospital, Fuzhou University Affiliated Provincial Hospital, 134 East Street, Fuzhou, 350000, People's Republic of China.
More attention should be paid to the deviations between the actual diameter of the rhexis reference circle which projected by the Image-guided systems and its intended size, and assess the influence of ocular biometric parameters on the deviation. In this study, the Callisto eye image-guided system was employed to generate a digital rhexis reference circle (rhexis overlay) set at an intended diameter of 6 mm and a screenshot of the video was taken at the end of the cataract surgery, then to compare the deviation between the observed rhexis overlay diameter (ROD) and the optic diameter (6 mm). The factors influencing diameter deviation were identified with univariate and multivariate linear regression.
View Article and Find Full Text PDFFluctuations of Anterior Chamber Depth and Astigmatism in Pseudophakic Eyes.
Clin Ophthalmol
December 2024
Department of Refractive Surgery, Eye Clinic Sistina Oftalmologija, Skopje, 1000 Republic of North Macedonia.
Purpose: To explore the significance of changes in anterior chamber depth (ΔACD) and astigmatism between 4 and 8 weeks following uneventful phacoemulsification.
Patients And Methods: Anterior chamber depth (ACD, mm), autorefractometry and subjective refraction were monitored in pseudophakic eyes implanted with non-toric IOLs (group 1, SA60AT, n=36; group 2, SN60WF, n=34; group 3, ICBOO, n=16) and phakic control group (n=30, group 4a, for ACD and autorefractometry) over four weeks. Changes in subjective refractions were compared with repeatability in normal phakic eyes (n=30, group 4b).
Flipped implantable collamer lens causing angle closure and creating a unique challenge for intraocular lens calculation.
BMJ Case Rep
December 2024
Ophthalmology, Hospital CUF Descobertas, Lisboa, Portugal.
Extreme myopic laser-assisted in situ keratomileusis (LASIK) poses challenges regarding future intraocular lens (IOL) power selection. A male patient in his 40s complained of progressive right eye (OD) diminished visual acuity. He had a history of myopic LASIK in both eyes (OU) 20 years before, and implantable collamer lens (ICL) implant in OU 8 years before.
View Article and Find Full Text PDFThe variation in axial length in office hours causes a diopter change in the intraocular lens power calculation.
Eur J Ophthalmol
December 2024
Kenezy Hospital Department of Ophthalmology, University of Debrecen, Debrecen, Hungary.
Purpose: To investigate whether diurnal changes in biometric parameters at different times of the day are visible and to analyze whether the variations could have clinical significance in the process of intraocular lens (IOL) power calculation.
Methods: Phakic eyes measured by IOLMaster 700 above the age of 16 were included, with the exclusion of previous surgery. Measurements were taken between 7:00 and 15:00 and data were treated in hourly groups within this range.
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