June 2023
Volume 64, Issue 8
Open Access
ARVO Annual Meeting Abstract  |   June 2023
Topographical Characteristics of Patients with Ocular Surface Disease Successfully Fit in Custom Scleral Lenses
Author Affiliations & Notes
  • Hannah H Yoon
    Illinois Eye and Ear Infirmary, Department of Ophthalmology and Visual Sciences, University of Illinois Chicago College of Applied Health Sciences, Chicago, Illinois, United States
  • Jennifer S Harthan
    Illinois College of Optometry, Chicago, Illinois, United States
  • Amy Catherine Nau
    Korb and Associates, Boston, Massachusetts, United States
  • Jennifer Swingle Fogt
    The Ohio State University, Columbus, Ohio, United States
  • Cherie B Nau
    Ophthalmology, Mayo Foundation for Medical Education and Research, Rochester, Minnesota, United States
  • Muriel Schornack
    Ophthalmology, Mayo Foundation for Medical Education and Research, Rochester, Minnesota, United States
  • Ellen Shorter
    Illinois Eye and Ear Infirmary, Department of Ophthalmology and Visual Sciences, University of Illinois Chicago College of Applied Health Sciences, Chicago, Illinois, United States
  • Footnotes
    Commercial Relationships   Hannah Yoon None; Jennifer Harthan Essilor, IKA, Metro Optics, Synergeyes, Code C (Consultant/Contractor); Amy Nau None; Jennifer Fogt Nevakar, Eyenovia, Alcon, Code C (Consultant/Contractor); Cherie Nau None; Muriel Schornack None; Ellen Shorter None
  • Footnotes
    Support  NIH Grant P30EY001792, Research to Prevent Blindness Unrestricted Departmental Grant
Investigative Ophthalmology & Visual Science June 2023, Vol.64, 3538. doi:
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      Hannah H Yoon, Jennifer S Harthan, Amy Catherine Nau, Jennifer Swingle Fogt, Cherie B Nau, Muriel Schornack, Ellen Shorter; Topographical Characteristics of Patients with Ocular Surface Disease Successfully Fit in Custom Scleral Lenses. Invest. Ophthalmol. Vis. Sci. 2023;64(8):3538.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : The corneo-scleral profilometry (CSP) module on the Oculus Pentacam (Wetzlar, Germany) allows for the measurement of the corneal and scleral surfaces. This CSP data can also be utilized to create a data-designed, custom scleral lens (SL). The purpose of this study is to describe the corneal and scleral topographies of eyes successfully fit in custom SLs, as well as the SL fitting process.

Methods : In this IRB-approved, prospective single visit study, patients being fit into scleral lenses (SLs) were identified as potential subjects. Demographics, indication for lens wear, topographical information from the CSP data report, and the scleral lens fitting process (ie. number of visits, fitting duration lenses ordered) were recorded for each subject.

Results : Image-based SLs were successfully fit for 8 of 9 patients (13 eyes). One eye of one subject was unable to tolerate SL wear. Ocular surface disease (OSD) was the indication for scleral lens wear for all subjects: keratoconjunctivitis sicca (6 patients, 11 eyes), neurotrophic keratitis (1 patient, 1 eye), and limbal stem cell deficiency (1 patient, 1 eye). 7 eyes exhibited scleral toricity in the oblique orientation (vs. 4 eyes ATR vs. 2 eyes WTR). There was no association between the orientation of corneal astigmatism and scleral toricity in this OSD population with low corneal astigmatism (0.99 ± 0.99 D). Mean scleral toricity was highest at the 17 mm chord (295.73 ± 176.37 um) compared to the 15 mm (136.55 ± 134.74 um) and 16 mm (202.18 ± 160.23 um) chord lengths. The mean maximum measurable anterior ocular surface diameter the CSP module could capture was 17.30 ± 0.29 mm.

The mean SL diameter ordered was 17.32 ± 0.27 mm. A mean of 3.15 ± 0.80 total visits over a period of 76.55 ± 0.28 days were required to complete SL fitting, with a mean of 2.38 ± 0.87 lenses ordered.

Conclusions : In this study, eyes with OSD exhibited low levels of corneal astigmatism with scleral toricity increased as a function of increasing distance from limbus. There was no association between the orientation of corneal and scleral toricity. There were no appreciable differences in efficiency of the fitting process between CSP-assisted lens designs and previously reported parameters for diagnostic SL fitting.

This abstract was presented at the 2023 ARVO Annual Meeting, held in New Orleans, LA, April 23-27, 2023.

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