Optic Nerve Sheath Tethering in Adduction Occurs in Esotropia and Hypertropia, But Not in Exotropia

Partial PHA Total PHA Strabismus: Exotropia LE Hypertropia LE Hypertropia RE Esotropia RE Hypertropia LE Esotropia RE

Effect of scuba-diving on optic nerve and sheath diameters

  Background :There is not any data available about the effect of high bar pressure condition on intracranial pressure. In this study, the effect of diving on the optic nerve and sheath diameters as non-invasive markers of intracranial pressure has been investigated.   Methods : Twenty professional male divers from twenty one volunteers were chosen for this cross-sectional study. Only one perso...

Optic Nerve Sheath in Rats

Fuciis.-Textbook of Ophthalmology (Duane). 1923. Arch. f. Ophrhal., Bd. LXXXVI, S. 155. GILBERT.-Arch. f. Augenheilk., Vol. LXXXVIII, S. 143, 1921. TREACHER COLLINs.-Roy. Lond. Ophthal. Hosp. Reps., Vols. I-XII, p. 273. COLLINS and MAYOU.-Pathology of the Eye, p. 18. PARSONS.-Pathology of the Eye. Vol. I Part I, p. 322, MORAX.-Bull. de la Soc. Fran9. d'Ophtal., Vol. XLIV, p. 365, 1931. HOUWER.-...

Optic nerve sheath meningocele

A 53-year-old man presented with a 5-month history of visual loss in his left eye. Visual acuity could be corrected to 20/20 with an increased hyperopic correction. Dilated funduscopy showed faint choroidal folds and elevation of the left optic disc. The coronal view of T2-weighted magnetic resonance imaging demonstrated a fluid-filled dilated sheath surrounding normal optic nerves. General phy...

Optic nerve sheath fenestration in cryptococcal meningitis

A patient with acquired immunodeficiency syndrome (AIDS) developed crytpococcal meningitis, complicated by papilledema and severe progressive visual loss despite medical therapy. Bilateral optic sheath fenestration resulted in significant improvement in vision and resolution of papilledema. Histopathologic evaluation of the optic nerve sheath demonstrated numerous cryptococci. Optic nerve sheat...