isolation-of-retinal-pigment-epithelial-cells-from-guinea-pig-eyes

Isolation of Retinal Pigment Epithelial Cells from Guinea Pig Eyes

This protocol describes the isolation of cells of the retinal pigment epithelium (RPE) from the eyes of young pigmented guinea pigs for potential ...

University of California, Berkeley

Osaka University Graduate School of Medicine

National Hospital Organization

This study compared the optical axial length (AL) obtained by composite and segmental methods using swept-source optical coherence tomography (SS-OCT) devices, and demonstrated its effects on the post-operative refractive errors (RE) one month after cataract surgery. Conventional AL measured with the composite method used the mean refractive index. The segmented-AL method used individual refractive indices for each ocular medium. The composite AL (24.52 ± 2.03 mm) was significantly longer (P < 0.001) than the segmented AL (24.49 ± 1.97 mm) among a total of 374 eyes of 374 patients. Bland-Altman analysis revealed a negative proportional bias for the differences between composite and segmented ALs. Although there was no significant difference in the RE obtained by the composite and segmental methods (0.42 ± 0.38 D vs 0.41 ± 0.36 D, respectively, P = 0.35), subgroup analysis of extremely long eyes implanted with a low power intraocular lens indicated that predicted RE was significantly smaller with the segmental method (0.45 ± 0.86 D) than that with the composite method (0.80 ± 0.86 D, P < 0.001). Segmented AL with SS-OCT is more accurate than composite AL in eyes with extremely long AL and can improve post-operative hyperopic shifts in such eyes.

Comparison of composite and segmental methods for acquiring optical axial length with swept-source optical coherence tomography.

To compare the changes in axial length (AL) obtained after cataract surgery by partial coherence interferometry (PCI), swept-source optical coherence tomography with the composite method (SS-OCT/CM), and SS-OCT with the segmental method (SS-OCT/SM).

Change in optical axial length after cataract surgery: segmental method vs composite method.

To evaluate the performance of a new formula of intraocular lens (IOL) power calculation (the O formula) based on ray tracing without commonly used parameters, including ultrasound-compatible axial length, keratometry readings, and A-constant.

Article	Year
Comparison of composite and segmental methods for acquiring optical axial length with swept-source optical coherence tomography. Scientific reports\| PubMed ID: 32161358	2020
Change in optical axial length after cataract surgery: segmental method vs composite method. Journal of cataract and refractive surgery\| PubMed ID: 32358265	2020
Preliminary demonstration of a novel intraocular lens power calculation: the O formula. Journal of cataract and refractive surgery\| PubMed ID: 35642086	2022

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