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The cornea is the clear dome shaped transparent, outermost layer of the eye, about 12 mm in diameter. It serves as a physical barrier against dust, microorganisms and other harmful particles. The cornea also plays an important role in vision. It filters some amount of ultraviolet light and protects iris, pupil and anterior chamber.As light is refracted by the curvature of the cornea, it is focused on the object and forms a clear Image. Any infection, disease or trauma to the cornea can interfere with vision by blocking or distorting light as it enters the eye.
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Cornea Surgery in Ghatkopar From Cornea specialist in mumbai-Dr. JatinAshar CorneaSurgeryinGhatkopar The corneaisthe cleardomeshapedtransparent,outermostlayerof theeye,about12mmindiameter.Itserves asa physicalbarrieragainstdust,microorganismsandotherharmful particles.Thecornea also playsan importantrole invision.Itfilterssomeamount of ultravioletlight andprotectsiris,pupil andanteriorchamber. Aslightisrefractedbythecurvature of thecornea,it isfocusedontheobjectandformsa clearImage.Any infection,diseaseortraumatothecorneacaninterferewithvisionbyblockingordistorting light asit entersthe eye.Itcontainsspecializedtissuehavingnobloodvesselsandisnourishedwithyourtearsandaqueoushumor (behindthe cornea). Corneaismadeupofthreemajorcomponents. Epithelium –Corneahasnumerousnerve endings,that’swhyyouexperience painwhilerubbing youreyes.It absorbsoxygenandnutrientsfrom the tears.Epitheliumisconnectedwithstromawiththehelp of basement membrane. Stroma–Thestromaisthe thickestpart of thecornea andismade upof collagenandwater.Collagenfives elasticityandkeepscornea firm.Thesecollagenfibresarearranged instrictlyinaregular,geometricfashion. Thisarrangementisresponsible forclearcornea,whileincase oftrauma,collagenfibreslaiddownin repair, oftenleadstocloudycornea.Belowstroma isthe Descemet’smembrane,whichconnectsitwithendothelium. Endothelium -Theinnermostlayerofthecorneaismade up of endothelium.Functionof endothelium isto maintainfluidbalance byactingasa pump,expelling excesswaterasitisabsorbedintothe stroma.Withoutthis specialized function, the stroma could become waterlogged and hazy and opaque in appearance, also reducing vision. Symptomsofcornealconditions Minorinjuriesof corneaheal byitselfwhilemajorinjuriesmayresult inscarringand impairedvision.
Intensepain. • Blurredvision. • Doublevision • Tearing. • Redness. • Extremesensitivitytolight. • Cornealconditions • Injuries/Trauma • Eyeallergies • Keratitis. • Ocularherpes • Herpeszoster(shingles) • Dryeye. • NutritionalDeficiencies like VitaminA • Cornealdystrophies–Keratoconus,Map-dot-fingerprintdystrophy,Fuch'sdystrophy • Commondiseasesthatcanaffectthe cornea—Abnormalgrowths, autoimmunediseases,Stevens- Johnson syndrome, iridocornealendothelial syndrome andpterygium. • Treatment • Simplecornealconditions canbetreatedwithantibioticoranti-inflammatoryeyedropsorpills.Ifyouhave advancedcornealdisease,youmayneedanadvancedtreatment. • Laser treatment–InCornealdystrophies,doctorscanuseatype oflasertreatmentcalledphototherapeutic keratectomy(PTK)toreshapethe cornea,remove scartissue,andmake visionclearer. • Cornealtransplant surgery–Incasecornea isdamaged andcannotberepaired,doctorscan removethe damagedpartandreplace itwithhealthycorneal tissue from adonor. • Artificialcornea- Asan alternative to cornealtransplant,doctorscanreplaceadamagedcorneawithan artificialcornea,calleda keratoprosthesis(KPro).
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