Scheimpflug imaging for grading and measurement of corneo-scleral-profile in different quadrants

Bergmann, Benjamin; Wolffsohn, James S.; Bandlitz, Stefan

doi:10.1016/j.clae.2022.101753

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…The CSP software on the instrument allows for the measurement of sagittal height of the anterior ocular surface over a chord of up to 18 mm in diameter using 250 discrete images. 18,19 No fluorescein dye is required. The device automatically captures a tear film-independent image of the ocular surface when proper alignment is achieved.…”

Section: Methodsmentioning

confidence: 99%

Process and Outcomes of Fitting Corneoscleral Profilometry-Driven Scleral Lenses for Patients With Ocular Surface Disease

Yoon,

Harthan,

Skoog

et al. 2024

Eye &Amp; Contact Lens: Science &Amp; Clinical Practice

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Objectives: To assess the feasibility of obtaining cornea scleral profile (CSP) measurements using Scheimpflug imaging and report on the fitting process of free-form custom scleral lenses (SLs) for patients with ocular surface disease (OSD). Methods: This prospective study of patients fit with free-form SLs collected data on the following: demographics, indications for wear, corneal and scleral tomography, scan acquisition process, and SL fitting process. Results: Cornea scleral profile scans were acquired on 15 eyes of nine patients. Mean scan time for right eyes was 10.7, and 9.7 min for left eyes. A mean of 2.9 follow-up visits were required to complete SL fitting, with a mean of 2.1 lenses ordered. One eye did not tolerate lens wear, and one eye could not be fit using the CSP scan because of insufficient data. The initial lens ordered was dispensed at the first follow-up visit for seven of the remaining 13 eyes, all of which were ultimately fit successfully in free-form lenses. Conclusions: In this study of profilometry-guided SL fitting for eyes with OSD and low magnitude corneal astigmatism, the number of lenses and follow-up visits required were similar to outcomes of previous studies that described the diagnostic approach to SL fitting. In addition, imaging technology does not negate the need for skilled clinical observation while fitting SLs.

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Section: Methodsmentioning

confidence: 99%

Process and Outcomes of Fitting Corneoscleral Profilometry-Driven Scleral Lenses for Patients With Ocular Surface Disease

Yoon,

Harthan,

Skoog

et al. 2024

Eye &Amp; Contact Lens: Science &Amp; Clinical Practice

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“…We have also provided similar practical guidance on rigid corneal lens evaluation. 175,192 Advances in instrumentation have allowed us to better understand how soft contact lenses drape over the cornea and sclera (which is more of a tangent than previously thought), [193][194][195][196][197] the shape profile of contact lenses, 198 and the impact of lens design on its centration and mobility. 173,199,200 We developed a technique to compensate for image distortion due to the optics of the eye, 201 which had previously been overlooked, leading to the incorrect observation 202 that soft contact lenses significantly indent (embed into) the corneal epithelium.…”

Section: Impact Of Technological Advances In the Optics And Propertie...mentioning

confidence: 99%

2022 Glenn A. Fry Award lecture: Enhancing clinical assessment for improved ophthalmic management

Wolffsohn

2024

Optom Vis Sci

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Detailed clinical assessment is critical to allow sensitive evaluation of the eye and its management. As technology advances, these assessment techniques can be adapted and refined to improve the detection of pathological changes of ocular tissue and their impact on visual function. Enhancements in optical medical devices including spectacle, contact, and intraocular lenses have allowed for a better understanding of the mechanism and amelioration of presbyopia and myopia control. Advancements in imaging technology have enabled improved quantification of the tear film and ocular surface, informing diagnosis and treatment strategies. Miniaturized electronics, large processing power, and in-built sensors in smartphones and tablets capacitate more portable assessment tools for clinicians, facilitate self-monitoring and treatment compliance, and aid communication with patients. This article gives an overview of how technology has been used in many areas of eye care to improve assessments and treatment and provides a snapshot of some of my studies validating and using technology to inform better evidence-based patient management.

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“…This new edition gives special attention to scleral contact lenses, dividing the topic into general scleral lens considerations and post-keratoplasty lenses, emphasizing the unique features to consider in each patient population. Scleral lens fitting has increased significantly [ 12 , 13 ], thanks in part to new technology based on Fourier transform profilometry for measuring the anterior eye surface, encompassing the corneo-scleral area, such as Eye Surface Profiler (ESP, Eagle Eye, Houten, The Netherlands) [ 14 , 15 ], fluorescence-based structured light topographer sMap3D (Visionary Optics, Front Royal, VA, USA) [ 16 ], and the Scheimpflug imaging technology of the corneoscleral profile (CSP) module of Pentacam (Oculus, Wetzlar, Germany) [ 17 ]. The scleral shape is a potential factor causing inferior temporal decentration in spherical scleral lenses [ 18 ], which causes poor visual quality [ 19 ].…”

mentioning

confidence: 99%

Book Review: Efron, N. Contact Lens Practice; Elsevier Health Sciences: Amsterdam, The Netherlands, 2024; ISBN: 978-0-7020-8427-0

Erdinest

2023

Vision

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Scheimpflug imaging for grading and measurement of corneo-scleral-profile in different quadrants

Cited by 3 publications

References 14 publications

Process and Outcomes of Fitting Corneoscleral Profilometry-Driven Scleral Lenses for Patients With Ocular Surface Disease

Process and Outcomes of Fitting Corneoscleral Profilometry-Driven Scleral Lenses for Patients With Ocular Surface Disease

2022 Glenn A. Fry Award lecture: Enhancing clinical assessment for improved ophthalmic management

Book Review: Efron, N. Contact Lens Practice; Elsevier Health Sciences: Amsterdam, The Netherlands, 2024; ISBN: 978-0-7020-8427-0

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