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Published on: October 21, 2022
Granular-lattice (Avellino) corneal dystrophy
S Akiya1, H Takahashi, N Nakano
1Department of Ophthalmology, University of Occupational and Environmental Health, Kitakyushu, Japan.
Summary
Granular-lattice corneal dystrophy, a rare condition combining granular and lattice patterns, was identified in Japanese patients. This rare dystrophy has a broader geographic distribution than previously thought.
Area of Science:
- Ophthalmology
- Corneal Diseases
- Histopathology
Background:
- Granular-lattice (Avellino) corneal dystrophy is a rare inherited eye condition.
- It presents with overlapping clinical features of both granular corneal dystrophy and lattice corneal dystrophy.
- Previous reports on this condition are limited, with few documented cases.
Observation:
- Histopathologic examination of a corneal button from a Japanese patient revealed features of both granular and lattice corneal dystrophy.
- This patient underwent keratoplasty due to decreased vision, initially diagnosed with granular dystrophy.
- Two additional Japanese patients presented clinically with combined granular and lattice corneal dystrophy features.
Findings:
- The histopathology confirmed the co-existence of granular and lattice deposits in the cornea.
- Clinical observations supported the diagnosis of combined granular-lattice corneal dystrophy in multiple individuals.
- The geographic distribution of granular-lattice corneal dystrophy appears wider than previously documented.
Implications:
- This study expands the understanding of granular-lattice corneal dystrophy's presentation and pathology.
- It suggests that the condition should not be exclusively associated with a specific geographic area.
- Further research is warranted to elucidate the genetic and clinical spectrum of this rare dystrophy.
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