Clinical Report: Chinese Trial Validates Scleral Lenses
Overview
A multi-center clinical trial in China demonstrated that a four-zone scleral lens design provides visual rehabilitation for patients with irregular corneas. The study involved 138 adults and showed improvements in vision and comfort over three months.
Background
Scleral lenses are increasingly used for managing irregular corneas, yet most evidence comes from non-Asian populations. This study addresses the need for population-specific data, considering anatomical differences that may affect lens fitting and performance.
Data Highlights
| Outcome | Result |
|---|---|
| Successful visual rehabilitation (≥0.20 logMAR improvement) | 97.7% |
| Eyes gaining two or more lines of vision | 98.5% |
| Median improvement in vision | 0.30 logMAR |
| Average lenses required per eye for optimal fit | 1.5 |
| Participants wearing lenses ≥8 hours/day at 3 months | ~75% |
| Participants rating comfort and vision highly | ~90% |
Key Findings
- The study enrolled 138 adults with irregular corneas, primarily keratoconus (88%).
- 97.7% of participants achieved successful visual rehabilitation at one month.
- 98.5% of treated eyes gained two or more lines of vision with a median improvement of 0.30 logMAR.
- Fitting efficiency was high, requiring an average of 1.5 lenses per eye.
- No serious adverse events were reported, and safety findings were reassuring.
- 90% of participants rated comfort and vision highly after three months.
Clinical Implications
The findings support the use of scleral lenses for visual rehabilitation in Chinese patients with irregular corneas.
Conclusion
This study provides evidence for the efficacy and safety of scleral lenses in a Chinese population.
Related Resources & Content
- Chinese Trial Validates Scleral Lenses, Eye Discovery, 2023 -- Clinical outcomes of Chinese eyes with irregular corneas managed with a scleral lens
- Contact Lens Spectrum, CONTACT LENS CASE REPORTS, 2019 -- How Do Scleral Lenses Treat Ocular Surface Disease?
- Contact Lens Spectrum, Fitting Scleral Lenses, 2006 -- Scleral Lenses
- Contact Lens Spectrum, THE SCLERAL LENS VAULT, 2022 -- Scleral Fitting in a Keratoglobus Patient
- Keratoconus 7, NCBI -- Keratoconus
- contact lens spectrum — POINT/COUNTERPOINT: SCLERALS FOR HEALTHY EYES
- Keratoconus 7 (Concept Id: C3553308) - MedGen - NCBI
- Clinical outcomes of Chinese eyes with irregular corneas managed with a scleral lens - ScienceDirect
- Corneal and Intraocular Pressure Responses to Scleral Lens Wear: A Meta-Analysis - PMC
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