Kor J Ophthalmol Vol.21, No.2, 2007 Fig. 2. (A) Intraoperative finding of cyst excision shows a gray white cystic mass is attached to upper palpebral conjunctiva with two fibrous pedicles. (B) A cross section of the cyst filled with cystic fluid shows an unilocular cystic mass which consists of a thin fibrous wall (×14). Hematoxylin and Eosin stain. (C) The luminal surface is lined by two layers of atrophic, non-keratinizing cuboidal or flattened cells; the innermost cells show apical expansions, granular, deeply eosinophilic cytoplasm and basally located round nucleus (×400). 122 Fig. 3. (A) There is no focal abnormal echogenicity in the left eye, which is rotated medially without movement during examination. (B) Post-operative photograph showing esodeviation. 30 PD esotropia was determined by the Krimsky method and an abduction limitation was found in both eyes. (C) Computed tomography scan reveal no eyeball deformity and normal extraocular muscles.