Ophthalmology Terminology S
Schnyder’s Crystalline Dystrophy. Type of corneal dystrophy in which there is lipid deposition in the cornea.
Schwalbe Line. It is anatomical line that represents the junction of Descemet Membrane and the trabecular meshwork.
Scleral Buckle. Inward indentation of the sclera by a special silicon material that is called explant. This inward indentation will help to close retinal breaks by apposing the retina with the underlying Retinal Pigment Epithelial layer.
Scleritis. Inflammation of the sclera.
Sclerocornea. A condition in which there is opacification and vscularization of the peripheral part of the cornea in which the cornea is look like sclera.
Scleromalacia Perforans. is a condition comprising of severe thinning of the outer white layer of eye sclera.
Scotoma. Area with decrease in retinal sensitivity in visual field that is surrounded by areas of normal retinal sensitivity.
Senile Cataract. Lens opacity that is related to age.
Serpiginous Choroidopathy. Recurrent inflammatory condition of the choroid which is characterized by yellowish lesions at the level of inner choroid that start around the optic disc and spread in a snake-like manner towards the periphery of the retina.
Shallow Anterior Chamber. The depth of the anterior chamber which lies between the cornea and the iris is smaller than normal. This can be a predispose factor for angle closure glaucoma.
Silicone Oil. A special Oil that is used instead of Gas in vitrectomy.
Simultaneous Bifocal Contact Lenses
Stereoacuity. Measurement of the threshold of disparity that required to perceive stereopsis.
Stereopsis. Binocular perception of depth which occurs when separate but slightly dissimilar objects are seen by the two eyes as one.
Steroid Induced Glaucoma
Stickler Syndrome. It is a hereditary disease that affects the collagen fibers. It has both ocular and systemic manifestations. This disease can be diagnosed during childhood.
Strabismus. Abnormal deviation of the globe which can be inward, outward, up or downward.
Stromal Herpetic Keratitis
Sturge Weber Syndrome. A neurocutaneous syndrome that has systemic and ocular manifestations such as glaucoma and choroidal hemoangioma.
Subluxated Lens. Displacement of the lens from its origin place.It occurs due to weakness of the zonules.
Subretinal Neovascular Membrane. Abnormal fibrovascular membrane that grows underneath the retina. This abnormal membrane usually arises from the choroid and can penetrate the retina.
Superior Oblique Palsy. Paralysis of the Superior Oblique muscle.
Suprachoroidal Hemorrhage. A hemorrhage that occurs in the space between the choroid and the sclera.It is a serious painful condition that can occur spontaneously, as a cataract complication or after trauma.
Sympathetic Ophthalmia. A type of autoimmune inflammation that occurs in both eyes after trauma to one eye.This autoimmune inflammation is against melanocyte cells which present in the uvea tract. Uvea tract includes choroid and iris.
Synchysis Scintillans. Brown opacities with liquefied vitreous that occurs in patient with chronic vitreous hemorrhage.
Synechia. Abnormal adhesions that occur between the pupillary margin of the iris and the lens ( Posterior synechia ) or occur between the peripheral margin of the iris and the trabecular meshwork ( anterior synechia ). The main cause of it is chronic inflammation of the anterior chamber.
Synoptophore. A test for binocular single vision.