Changes in Symptoms of Midday Fogging with a Novel Scleral Contact Lens Filling Solution
| Autor: | Matthew Karres, Joseph T. Barr, Jennifer Swingle Fogt |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Adult
Male medicine.medical_specialty Fogging genetic structures Contact Lenses Visual Acuity Original Investigations Slit Lamp Microscopy law.invention Scleral lens law Ophthalmology Prosthesis Fitting medicine Humans Ocular Surface Disease Index business.industry Vision Tests Small sample eye diseases Prosthesis Failure Lens (optics) Contact lens Tears Female Contact Lens Solutions business Sclera Tomography Optical Coherence Optometry Test solution |
| Zdroj: | Optometry and Vision Science |
| ISSN: | 1538-9235 1040-5488 |
| Popis: | Significance Midday fogging of scleral contact lenses requires frequent lens removal and reapplication for a large portion of lens wearers. Using a lens filling solution that mimics the composition of tears is hypothesized to have an impact on the production of material trapped under a scleral lens. Purpose The purposes of this open-label study were to assess the safety of a scleral lens filling solution, which closely approximates the ionic concentration and pH of human tears, and to assess signs and symptoms of midday fogging with this formulation and with subjects' habitual sodium chloride solutions. Methods Existing scleral lens wearers with midday fogging (N = 22) were examined and completed surveys of symptoms. Subjects filled the concavity of their current lenses with test solution and were assessed immediately and approximately 4 hours later for safety monitoring. Test solution was dispensed and used for 5 to 9 days when subjects were reexamined and repeated the surveys. Biomicroscopy and anterior optical coherence tomography images were used to assess midday fogging objectively. Results The median (interquartile range) Ocular Surface Disease Index score decreased from 27.1 (21.7) U when using habitual filling solution to 9.1 (20.1) U when using the test solution (P = .006). Current Symptoms Survey findings with the test solution compared with habitual solution resulted in statistically significant decreases in burning/stinging (P = .04), grittiness/foreign body sensation (P = .01), dryness (P = .002), blurry/fluctuating vision (P = .002), and overall pain/discomfort (P = .006). Objective assessment of corneal staining and fogging revealed decreases that were not statistically significant in this small sample size. Conclusions This study establishes the safety and subject tolerance of a scleral lens filling solution that mimics the ionic composition of human tears. Significant improvements in subjective ratings, although likely biased in this unmasked trial, suggest that further studies of the effectiveness of this solution in reducing midday fogging are warranted. |
| Databáze: | OpenAIRE |
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