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Classification of Visual Field Abnormalities in Highly Myopic Eyes without Pathologic Change
Fengbin Lin1, Shida Chen1, Yunhe Song1
1State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China.
Ophthalmology
|March 15, 2022
Summary
A new classification system for visual field (VF) abnormalities in high myopia was developed. This system accurately categorizes VF defects and aids in understanding their association with age and axial length.
Area of Science:
- Ophthalmology
- Visual Science
Background:
- High myopia presents unique challenges in visual field (VF) assessment.
- Distinguishing glaucoma-related VF defects from those specific to high myopia is crucial for accurate diagnosis and management.
Purpose of the Study:
- To develop and validate a classification system for visual field abnormalities in highly myopic eyes.
- To differentiate between glaucoma-like defects and high myopia-related defects.
Main Methods:
- A classification system was developed based on 1893 VF tests from 1302 eyes of 825 individuals.
- The system defined 4 major VF pattern types: normal, glaucoma-like, high myopia-related, and combined defects.
- Interobserver and intraobserver agreement were assessed, demonstrating high reproducibility (κ ≥ 0.86).
Main Results:
- Normal VF patterns were most prevalent (74.1%), followed by high myopia-related defects (15.0%) and glaucoma-like defects (10.8%).
- Both defect types were significantly associated with older age and longer axial length.
- Longer axial length had a greater impact on glaucoma-like defects compared to high myopia-related defects.
Conclusions:
- A novel, reproducible classification system for visual field abnormalities in high myopia is proposed.
- This system enhances the ability to communicate and compare findings across studies.
- The classification aids in understanding the distinct and overlapping features of VF defects in high myopia and glaucoma.
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