ACADEMY

Posters

Two curves are better than one: Management of post-refractive myopia

Sheila Morrison, OD, MSc, FAAO, FSLS, Alia Cappellani, OD, FAAO, FSLS, Dipl. ABO; Vanessa Lin, OD; Andrea Lasby, OD, FAAO, FSLS

This novel custom soft, oblate, dual base curve lens design was effective for several post-refractive contact lens fittings. Further study will be needed to elucidate impact of other lens fitting parameters used in conjunction with custom-soft dual base curve designs.

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OC-SAG Values in 360 Degrees

Javier Rojas, Eef van der Worp, David Piñero

When looking at the anterior ocular surface in a 360-fashion – this study found that there are marked differences in OC-SAG values in different meridians.

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Elevating to the next level: A case series of dual sag scleral lens

Alia Cappellani, OD, FAAO, FSLS, Dipl. ABO; Sheila Morrison, OD, MS, FAAO, FSLS; Andrea Lasby, OD, FAAO, FSLS; Vanessa Lin, OD

Digital design is the way of the present and future, though currently trial lens fitting with dual sagittal height designs is relevant and useful in clinical practice and often necessary for power.

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Peripheral corneal data is highly relevant

Dr Rolando Ortiz, OD; Reinier Stortelder, BOptom ; Karin Brown Balvert, FBDO CL

Using real elevation data of the peripheral cornea can reduce the number of refits for the Paragon CRT orthokeratology lens and the chair time. This study could be repeated with larger sample sizes and involving multiple fitters to minimize fitter bias.

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Precise Empirical Scleral contact lens fitting designing utilizing Profilometry

Kyriakos Telamitsi, BSc (Optics), Optometry, Contact Lenses Practitioner, FSLS, ISCLS

Thanks to the accurate scleral data Profilometry assists designing empirical freeform scleral contact lenses fitting precisely and it may help to reduce chair time and refits, leading to happy patients.

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Visual Rehabilitation with scleral lens in a patient with corneal scarring and pinguecula

Karin Brown Balvert, FBDO CL, MBCLA; Joana Marta, Orthoptist, Contact Lens Specialist

With larger diameter scleral lenses, pingueculas can be hard to fit, but with the improving technology in the labs, and accurate measurements of the scleral surface, it was possible to get a good fitting lens.

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Profilometry Precision: A Scleral Lens Fit Utilizing Profilometry

Melanie Mae Patterson, Rebecca Simmons Brown, Samantha Myers (OD , FAAO), Renee Reeder (OD, FAAO , FBCLA , FSLS , FIACLE)

Scleral lenses are a great option for patients with ocular surface disease. A near perfect fit is often required in these patients in order to improve comfort and increase wear time.

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Comparison of sagittal height measurements with Fourier domain profilometry and with narrow cone corneal topographer

Javier Sebastián, GOO, MSc; Razvan Ghinea, PhD; David Piñero, PhD; Javier Rojas, MSc, FAAO; Julio Ezpeleta, GOO, MSc.

Values provided by both devices are no interchangeable and clinical significant differences were observed.

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Corneoscleral junction angle in healthy eyes assessed objectively

Javier Rojas, MSc, FAAO; David Piñero, PhD; Javier Sebastián, GOO, MSc; Julio Ezpeleta, GOO, MSc; Alejandra Consejo, PhD.

The corneoscleral junction angle influences sagittal height, a key parameter for ensuring a successful lens fit, especially in large-diameter lenses.

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A theoretical approach to estimate the impact of the corneo-scleral junction angle on ocular sagittal height

Reinier Stortelder, BOptom; Javier Rojas GOO, MSc, FAAO; David P. Piñero, PhD

A theoretical model was created to calculate the tangent angle at the end of an asphere of 12 mm.

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The Need for Speed

John Samssedi, OD, FAAO; Brian Tompkins, BSc (Hons), FCOptom, FBCLA

Both nystagmus patients showed toricity with the rule and the toricity increases as the chord length increases. As a result, the scleral lens approach for both these patients was the best approach.

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Incorporating a Bi-Elevation Design for Improved Scleral Lens Centration

Germán Aparicio, OD; Lindsay A. Sicks, OD, FAAO, FIACLE, FSLS

Scleral lens centration is influenced by several factors including the corneal sagittal height, limbal shape, and scleral shape. All these factors can be assessed using corneal and scleral Profilometry.

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Nomograms to use with Scleral Profilometry

Reinier Stortelder, BOptom

Scleral lens designs are currently updated rapidly offering more features, more parameters and finally more comfort to the patient. In this poster two guidelines are suggested to make it easier to combine Profilometry for scleral lens designing.

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HVID Measurements Utilizing Various Instrumentation

Jennifer Harthan OD, FAAO, FSLS; William Skoog; Xiaohua Zhuang, PhD, FAAO; Louise Sclafani OD, FAAO, FSLS

Horizonal Visible Iris Diameter and sagittal depth measurements are important when fitting specialty lenses as they assist with initial lens selection and can improve comfort and fit. The purpose of this study was to determine HVID measurements provided by different instruments.

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Optimizing Soft Lens Fitting: Importance of HVID Versus Corneal Curvature

Jason Jedlicka OD, FAAO; Joselyn Dlouhy, OD

In an effort to optimize soft contact lens fitting, we sought to determine which is the more valuable data parameter when selecting an initial lens, corneal curvature or corneal diameter, and the significance or impact of each.

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Not Just SAG, a Theoretical Model to Compare the SAG of Soft Lenses

Reinier Stortelder, BOptom; Giancarlo Montani OD, FIACLE, FBCLA; Javier Rojas OD, FAAO, FSLS

Over the last decade the soft lens market has learned that the dropout rate is not improving. The existing method of fitting soft lenses, based on the keratometry values of the eye and BC of the lens does not work. An easy-to-use calculation method is introduced.

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Considerations when comparing scleral shape differences

Reinier Stortelder, BOptom

Corneal difference maps are a popular method to track and trace the development of corneal diseases as well as the condition of the cornea post operative. In this poster a couple of considerations are discussed when comparing sagittal height (SAG) maps.

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A healthy post-graft with a unique scleral lens design

Barry Leonard OD; Reinier Stortelder, BOptom

Fitting scleral lenses on post graft patients is a tricky thing and often a smaller gas permeable lens is preferred to avoid oxygen issues. But obviously, a scleral lens has many things to offer to these eyes.

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Profilometry: The future of scleral lens fitting NOW #COVIDdriven

Brian Tompkins, BSc (Hons) FCOptm, FBCLA; Reinier Stortelder, BOptom

The advent of COVID-19 has led to many changes around the world including in the field of Optometry. However, new developments arising during this time within both, the scientific and medical fields, have been a silver lining.

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CASE REPORTS

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VIDEOS

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