Abstract
Purpose
In this study we investigated the histopathologic characteristics of conjunctivochalasis and its association with lymphangiectasis using impression cytology and conjunctival excisional biopsy in patients with conjunctivochalasis.
Methods
This prospective study included 14 outpatients diagnosed with conjunctivochalasis, and who had excisional bi-opsies performed between March 1, 2012 and November 30, 2012. Preoperative slit-lamp examination, dry eye diagnostic test and impression cytology were also performed. For histological analysis, conjunctival sections were stained with hema-toxylin and eosin (H&E), Verhoeff-van Gieson (VVG) elastic staining, and monoclonal antibody D2-40, a lymphatic endo-thelial marker.
Results
Tear break-up time and Schirmer’s value were decreased in patients with conjunctivochalasis. Impression cytol-ogy showed a decrease in goblet cell density and an increase in nucleoplasmic/cytoplasmic ratio. The patients’ con-junctival tissues exhibited an infiltration increase of chronic inflammatory cells on H&E stain, and a decrease in collagen density with degeneration of elastic fibers on VVG stain compared to tissues from the control subjects. D2-40 im-munohistochemistry revealed the dilated subconjunctival lymphatics in patients with conjunctivochalasis.
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Table 1.
Table 2.
Table 3.
Stain | Histologic analysis | Conjunctivochalasis | Control | p-value* |
---|---|---|---|---|
Impression cytology H & E | Goblet cell density Inflammatory cells | 42.1 ± 10.0 117.4 ± 45.6 | 89.1 ± 22.9 78.0 ± 14.6 | 0.020 0.042 |
H & E | Inflammatory cells | 117.4 ± 45.6 | 78.0 ± 14.6 | 0.042 |
Verhoeff Van Gieson | Elastic fiber degeneration Collagen density | 2.3 ± 0.7 1.7 ± 0.7 | 1.4 ± 0.6 2.8 ± 0.5 | 0.029 0.010 |
D2-40 | Collagen density Lymphangiectasis count | 1.7 ± 0.7 29.3 ± 11.0 | 2.8 ± 0.5 8.8 ± 2.2 | 0.010 0.001 |
D2-40 | Lymphangiectasis count | 29.3 ± 11.0 | 8.8 ± 2.2 | 0.001 |
Largest lymphatic vessel diameter | 286.1 ± 125.3 | 79.4 ± 27.5 | 0.001 |