Eye Anatomy Layes & Structure PDF

D LAYERS AND STRUCTURE OF EYEBALL ···· Actlvo space· - · · Basic Anatomy of Eyeball 00:01 :os Sho.pe : A...

D LAYERS AND STRUCTURE OF EYEBALL ···· Actlvo space· - · · Basic Anatomy of Eyeball 00:01 :os Sho.pe : AsphericoJ (Ablo..te spheroid) 12.o~ volwne: 1c, ml Site : Orbit (bo~ ~e) - - - medloJ wo.JI AxioJ len.9th!Anteroposterior d.io.meter: a4 mm (a.4crn)...t-- Floor Orbit contojnin3 e:ieboJ\ ~ers OJ..tenno!'>t mido.le : uveo.J ~r o.~ Innermost : \2.et,no... I Po.rts (Anterior ~ Posterior) IJeu.rosen-:,or:l ~ + o.. Ins o.:ier Anter,or 1/1cth : cornP.A L imhuc Posterior s/cieroJ White Copa.9Lte) c. Choroid postenor\:l Convex !°>ha.ped. junction Covered. b~ co~Ltnctiva.. vasc.ulo.r Lo..~er 12.e~a.ctive power (tr~o.rent mu.col,l!', present membrane) L.imbl,l!', Sciera. ,. \rlS } Seen below "--------► Pupil cornea. ,__ _ _ cornea. Arrter' µL/m,f)U\e o.as µLI m,n/mm H3 functlon : exer\s ln-\'ro..ocula.r - Vio.. o.n3\e ~ AC, - pre~ure (lop) Depfu: 3 mm (a.s mm - 4.4 mm) f=-' - meosured. b~ Tonometr~,.'fc _ measured b~ t onogrQfhg ~ (~\j1t ~ ~- crw,1=) Ophthalmology v 1.0 Marrow 8.0 2024  3 ANATOMY OF CORNEA, ANATOMY OF SCLERA -- - Active space ----- AND ITS PATHOLOGIES Neurovascular Supply of Cornea 00:00:30 e,lood suppl,:j : AvoscuJor - - - - - - - C.Omeo..: Trcmsporent '2.elo..tive index : I.31/o '2.e~a.c.tive power: +430 to +480 (c.orwer3il"'l,9 power) tJerve suppl::, (sensorf : Tri_3eminoJ - OphthoJmic. - Nosocilio..r,:1 - C.Omeo.. C.Omeo.l e,link '2.e~ex : Test ~ c.omeoJ senso..tion. Stimulus: Touch c.ornea.. u..frth c.otlon wisp. A~rent Csensor,:9 : Tri3eminoJ nerve (CN v) Tri3eminoJ nuc.leus t Fa..c.ioJ nuc.leus ~~rent : fo.cioJ nerve (CN.V\\) X ► 0ell's poJs.::j Cmotor) lna..bil~ to close e.::je : ~ophthoJmos ~~clor : OrbicuJoriS oc.uli t No blinkil"'l,9 C.OmeoJ cma..esthesio.. 12.esponse : 0linkil"'l,9. Co-uses : Herpes l"lera..hlis (m/c) Accmtho..moebo.. Kera..tms Oia..betes C.Onto..ct lens weo..r Lepros.::j sur3ic.oJ trauma.. Topic.DJ medica..tions (ex. Timolo\) Layers of the Cornea 00:15:00 suped\cioJ 1~er , Squrunou.s cells ho..ve microv,l\i - Adhesion o~ t ear \'ilm lJ - 1,.--1,~~:,.-...~.) middle lo..!:ler Wif'3-sho.ped cells ,...,....~...__,. ,,..(L ~ La:jer *~ ~~~~~ lJ Columnar cells - can under30 rn1\os,c.. / re.3enero.1e CorneoJ epithelioJ hlstolo.5.1j Ophthalmology v t.0 Marrow 8.0 2024  4 - Basic Anatomy of Eye Cp!IMlluffll50-«l ml~ __rf#I:. 1.4- -,--"'1 fplllelial _ _ _ _ _ - -...... -:-· Active space · ··._...,,...,., ,,_,. "''.. '.- - ". ,, J.. 0 '...... most meto.bolicoJI~ o..dNe l.o.:lers ~ cornea. 1. An-tenor (ou.-termos-0 l..°:jer - epifuelium : HiStolo~: tJon- 1 o-b',~s » > ex.ec.u.bve lenses. Power depend on o..3e. o) At 4-0 ~rs -+ +1 D reqwred b) eve~ a..dciitiona.l s ~rs - + o.s D a..dcied to pcwer. T~pes ~ ~cto..cles I t i ~ po..tiems onl~ need~ w po..tients oJreo..d.~ usirs neos v lSion lenses 3IOS!>es ~r ~os VlSion I Fos v,sion t e,i~coJs l\leos VISiOn rrosr~ive lenses Advo.nto.ses= 1. o-e,i~coJs Cos.mebcoJI~ o_ppeo.lirs d/t OiSa.dvo.nto.ses !Jo power in seo.ml~ tro.nsifon ~ lens - CosmeticoJI~ un per~ies eovers near, intermedioJe o_ppeoJirs o.ndwVlSion - tJo prov1Sion ~or intermedioJe vision Pou.>er restricted. to a. bcecutive b~coJs centre hou.r31o.s5 con½uro..fun Fos ViSion i t,,Jeos V1Sion Pupil biSecled. b~ line b/w lense Obsolete in most CAS.es except in pedio..tric o_pho.Kio.. SpoSm ~ o..ccommodo.-non : c.ontiru.ou.s sta..te ~ c.ontro..clion ~ c.ilio..r~ muscles i lo~ o~ ~o..r v·,sion (pseu.dom~opio) Trea±rnent: ~c.loplesia.. CRela.xo±ion ~ c.ilio..r~ muscles) oru.ss - m~dria..tics ~ c~clople3ics: - Atropine, Homa..tropine, ~clopentola..te. - Homo..tropine. - ~c.lopentolo±e. Ophthalmology v1.0 Marrow 8.0 2024 I 13 ANATOMY OF RETINA ----- Active space ----- Retina - Innermost Layer of Eye 00:00:20 Neuroser-60~ \0-.:}er. Ed2.O$S AtJATOm'/ ,. Optic Oise (oo) : AM ~\ind Spo{ ~ mo.rriot (R..ods ~ cones 0-bsenO. All 1°':1ers. ~ retino.. termin0-.te 0-.t OD (except nerve "bers.). ,~ port / On\~ visible port / 1ntr0-.-oc.ulo.r po.rt o~ ophc nerve (ON). Point in -fue retino.. wl.ere ON \eo__ves e~eboJI. Appeo.ro.nce : d(OD) = cCoptic cup) -t- Nl2J2 Weuro ret inoJ rim) Srope : vertic.oJI~ oval t Allows ve~els to tr0-.vel furnU3h L. Dio.meter: 1.smm / 1sooµm tJQQ fuic.Kne~ Nonno.l c./d r0-.tio : - 0.3 r- _ _ _ ln~erior 'J s uperior , tJo.soJ , TemporoJ t VISib\~ fuimer in 3\o.ucoma. Fo-.Jeo.. : Oiruneter 1.€5 mm t Fo-.Jeolo..: Hi3hest/best VISUDJ o..cu.~ : a. mo..culo.. Lu.tel>.. : -+---+- mru