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Special Senses
Published in Pritam S. Sahota, James A. Popp, Jerry F. Hardisty, Chirukandath Gopinath, Page R. Bouchard, Toxicologic Pathology, 2018
Kenneth A. Schafer, Oliver C. Turner, Richard A. Altschuler
Miscellaneous conjunctival alterations include amyloidosis, squamous cell metaplasia, epithelial neoplasia, microgranuloma, and pseudopterygium (Ackerman et al. 1998). Conjunctival microgranulomas often occur when lipid-containing substances are deposited beneath the bulbar conjunctiva, and pseudopterygium is a flap of bulbar conjunctiva that extends over the cornea (Dubielzig et al. 2010). It occurs spontaneously in rabbits and is not associated with irritation or inflammation but may grow back after removal.
Polymorphous Light Eruption, Hydroa Vacciniforme, and Actinic Prurigo
Published in Henry W. Lim, Herbert Hönigsmann, John L. M. Hawk, Photodermatology, 2007
Herbert Hönigsmann, Maria Teresa Hojyo-Tomoka
Conjunctivae are affected in 45% of the patients in whom it manifests at the beginning with conjunctivitis, photophobia, watery eyes, and pruritus; after some years patients develop pigmentation and finally pseudopterygium, which in severe cases may even impair vision (Fig. 10) (96).
The association between primary pterygium and corneal endothelial cell density
Published in Clinical and Experimental Optometry, 2020
Yijun Hu, Alp Atik, Wei Qi, Ling Yuan
The retrospective study reviewed the medical records of patients who were referred for cataract surgery between 2014 and 2016. A total of 1,565 patients with primary pterygium and 3,448 patients without pterygium were identified pre‐operatively for analysis. Inclusion criteria were untreated primary pterygium and age greater than 51-years. To exclude possible co‐existing corneal endothelial pathology and ECD measurement bias, we only included patients with a pre‐operative ECD between 1,800 and 3,500 cells/mm2.2011 Other exclusion criteria included patients with pseudopterygium, recurrent pterygium, corneal dystrophy or corneal degeneration, history of corneal infection, glaucoma, uveitis, ocular trauma or intraocular surgery. According to previous literature, ECD data are not significantly different between the right eye and left eye. Therefore, in the retrospective study we have only included the ECD data of the affected eye (unilateral pterygium) or the randomly chosen eye (bilateral pterygium or without pterygium) for analysis.2000
When to use anterior segment optical coherence tomography
Published in Expert Review of Ophthalmology, 2020
Eray Atalay, Daryle Jason Yu, Monisha Esther Nongpiur
AS-OCT may be useful in differentiating pseudopterygium from pterygium whereby the former appears nonadherent to the underlying cornea [94]. Documented AS-OCT findings suggestive of pterygia/pinguecula are slightly thickened epithelium with normal reflectivity and an underlying thick hyper-reflective tissue in the subepithelial space (Figure 8) [95]. AS-OCT may help visualize remnant pterygia tissue despite successful total excision evidenced by clinical examination [94]. Furthermore, it may allow monitoring of pterygia and the conjunctival graft after pterygium surgery [96,97].
Conjunctival Melanoma in Asian Indians: A Study of 42 Patients
Published in Seminars in Ophthalmology, 2019
Swathi Kaliki, Varshitha Hemanth Vasanthapuram, Dilip K Mishra
Surgical excision of conjunctival tumors can be associated with complications such as partial or total limbal stem cell deficiency, conjunctival scarring, symblepharon, or pseudopterygium. In our study, partial limbal stem cell deficiency was seen in two patients and symblepharon in one patient. Descematocele and subsequent corneal perforation were seen in one patient.