Corneal ectatic disorders or corneal ectasia are a group of uncommon, noninflammatory, eye disorders characterised by bilateral thinning of the central, paracentral, or peripheral cornea.[1]
Keratoconus, a progressive, noninflammatory, bilateral, asymmetric disease, characterized by paraxial stromal thinning and weakening that leads to corneal surface distortion.[2]
Keratoglobus, a rare noninflammatory corneal thinning disorder, characterised by generalised thinning and globular protrusion of the cornea.[3]
Pellucid marginal degeneration, a bilateral, noninflammatory disorder, characterized by a peripheral band of thinning of the inferior cornea.[4]
Posterior keratoconus, a rare condition, usually congenital, which causes a nonprogressive thinning of the inner surface of the cornea, while the curvature of the anterior surface remains normal. Usually only a single eye is affected.
Usually diagnosed clinically by several clinical tests. Although some investigations might needed for confirming the diagnosis and to differentiate different types of corneal ectatic diseases.[citation needed]
^"Ectasia After LASIK". American Academy of Ophthalmology.
^"Terrien marginal degeneration". American Academy of Ophthalmology.
^Marsack, Jason D.; Parker, Katrina E.; Applegate, Raymond A. (December 2008). "Performance of Wavefront-Guided Soft Lenses in Three Keratoconus Subjects". Optometry and Vision Science. 85 (12): E1172–E1178. doi:10.1097/OPX.0b013e31818e8eaa. PMC2614306. PMID 19050464.
^Marsack, JD; Parker, KE; Niu, Y; Pesudovs, K; Applegate, RA (November 2007). "On-eye performance of custom wavefront-guided soft contact lenses in a habitual soft lens-wearing keratoconic patient". Journal of Refractive Surgery. 23 (9): 960–4. doi:10.3928/1081-597x-20071101-18. PMID 18041254.
^Avni-Zauberman, N; Rootman, DS (November 2014). "Cross-linking and intracorneal ring segments--review of the literature". Eye & Contact Lens. 40 (6): 365–70. doi:10.1097/icl.0000000000000091. PMID 25320956. S2CID 38858189.
External linksedit
International Journal of Keratoconus and Ectatic Corneal Diseases
January 01, 1970
corneal, ectatic, disorders, corneal, ectasia, group, uncommon, noninflammatory, disorders, characterised, bilateral, thinning, central, paracentral, peripheral, cornea, contents, types, diagnosis, treatment, references, external, linkstypes, editkeratoconus, . Corneal ectatic disorders or corneal ectasia are a group of uncommon noninflammatory eye disorders characterised by bilateral thinning of the central paracentral or peripheral cornea 1 Contents 1 Types 2 Diagnosis 3 Treatment 4 References 5 External linksTypes editKeratoconus a progressive noninflammatory bilateral asymmetric disease characterized by paraxial stromal thinning and weakening that leads to corneal surface distortion 2 Keratoglobus a rare noninflammatory corneal thinning disorder characterised by generalised thinning and globular protrusion of the cornea 3 Pellucid marginal degeneration a bilateral noninflammatory disorder characterized by a peripheral band of thinning of the inferior cornea 4 Posterior keratoconus a rare condition usually congenital which causes a nonprogressive thinning of the inner surface of the cornea while the curvature of the anterior surface remains normal Usually only a single eye is affected Post LASIK ectasia a complication of LASIK eye surgery 5 Terrien s marginal degeneration a painless noninflammatory unilateral or asymmetrically bilateral slowly progressive thinning of the peripheral corneal stroma 6 Diagnosis editUsually diagnosed clinically by several clinical tests Although some investigations might needed for confirming the diagnosis and to differentiate different types of corneal ectatic diseases citation needed Corneal topography Corneal tomographyTreatment editTreatment options include contact lenses and intrastromal corneal ring segments for correcting refractive errors caused by irregular corneal surface 7 8 corneal collagen cross linking to strengthen a weak and ectatic cornea 9 or corneal transplant for advanced cases References edit Corneal ectatic disorders keratoconus and pellucid marginal degeneration AAO ONE Network American Academy of Ophthalmology Weissman Barry A Yeung Karen K 2019 05 30 Keratoconus Medscape Wallang B S Das S 28 June 2013 Keratoglobus Eye 27 9 1004 1012 doi 10 1038 eye 2013 130 PMC 3772364 PMID 23807384 Rasheed Karim Rabinowitz Yaron 2018 12 24 Pellucid Marginal Degeneration Medscape Ectasia After LASIK American Academy of Ophthalmology Terrien marginal degeneration American Academy of Ophthalmology Marsack Jason D Parker Katrina E Applegate Raymond A December 2008 Performance of Wavefront Guided Soft Lenses in Three Keratoconus Subjects Optometry and Vision Science 85 12 E1172 E1178 doi 10 1097 OPX 0b013e31818e8eaa PMC 2614306 PMID 19050464 Marsack JD Parker KE Niu Y Pesudovs K Applegate RA November 2007 On eye performance of custom wavefront guided soft contact lenses in a habitual soft lens wearing keratoconic patient Journal of Refractive Surgery 23 9 960 4 doi 10 3928 1081 597x 20071101 18 PMID 18041254 Avni Zauberman N Rootman DS November 2014 Cross linking and intracorneal ring segments review of the literature Eye amp Contact Lens 40 6 365 70 doi 10 1097 icl 0000000000000091 PMID 25320956 S2CID 38858189 External links editInternational Journal of Keratoconus and Ectatic Corneal Diseases Retrieved from https en wikipedia org w index php title Corneal ectatic disorders amp oldid 1111222372, wikipedia, wiki, book, books, library,
