16corneal degenerations

7/26/2019 16Corneal Degenerations

1/11

CORNEAL DEGENERATIONS

1. Age-relatedArcus senilis

Vogt wite li!"al girdle

#. Li$id %erato$at&

Crocodile sagreenCornea guttata

'ri!ar&

Secondar&

(. )and %erato$at&

*. S$eroidal degeneration

+. Sal,!ann nodular degeneration


2/11

Arcus senilisInnocuous and etre!el& co!!on in elderl&

Occasionall& associated wit &$erli$o$roteinae!ia

)ilateral circu!/erential "ands

o/ li$id de$osits Di//use central and sar$

$eri$eral "order

'eri$eral "order se$arated

/ro! li!"us "& clear ,one Clear ,one !a& "e tinned

0 senile /urrow


3/11

Vogt wite li!"al girdle Innocuous and 2er& co!!on in elderl& )ilateral

3ite crescentic line along nasal and te!$oralli!"us

T&$e 1 - se$arated /ro! li!"us "& clear ,oneT&$e # - not se$arated "& clear ,one


4/11

Crocodile sagreen4nco!!on and innocuous 4suall& "ilateral

'ol&gonal stro!al o$acities se$arated "&

clear s$ace5ost /re6uentl& in2ol2e anterior stro!a 0anterior crocodile sagreenOccasionall& in2ol2e $osterior stro!a

0$osterior crocodile sagreen


5/11

Cornea guttataCo!!on "ilateral and usuall& innocuousRarel& $rogression to 7ucs d&stro$&

Tin& dar% s$ots on central endoteliu!

Si!ilar $eri$eral lesions are 8assell-8enle "odies


6/11

Li$id %erato$at&

4suall& unilateral stro!al de$osits witout 2asculari,ation

Rare occurs s$ontaneousl& ina2ascular cornea

4nilateral stro!al de$osits wit2asculari,ation

Co!!on secondar& to $re2iousdisci/or! %eratitis

Treat!ent- coagulation o/ /eeder 2essels and9or %erato$last&

Treat!ent- %erato$last& i/ se2ere

'ri!ar& Secondar&


7/11

)and %erato$at&

Inter$al$e"ral li!"al o$aci/ication

Co!!on unilateral or "ilateral de$ending on cause

Su"e$itelial calci/ication

Central s$read o/ calci/ication

S!all oles witin calci/ied areaSe$arated "& clear ,one

'rogression


8/11

Causes o/ )and :erato$at&

1. Ocular 0co!!on

Silicone oil in anterior ca!"er

Increased seru! calciu! and $os$orus

Cronic iridoc&clitis $articularl& in cildren

8&$eruricae!ia

Associated wit $tisis "ul"i

(. 8ereditar& 0rare

Cronic renal /ailure

7a!ilial "and %erato$at&8ereditar& ict&osis

#. 5eta"olic 0rare

*. Age-related 0unco!!on


9/11

Re!o2al o/ corneal e$iteliu! A$$lication o/ sodiu! 2ersenate

Celation o/ "and %erato$at&

S id l d i


10/11

S$eroidal degeneration

Treat!ent

Central s$read coalescence and

o$aci/ication

Ad2anced lesions "eco!e

nodular and ele2ated

Rare t&$icall& a//ects outdoor wor%ers

Starts wit $eri$eral inter$al$e"ral s!all a!"er-coloured granules in su$er/icial stro!a

De"ride!ent or su$er/icial %eratoto!& i/ !ild

:erato$last& i/ se2ere

'rogression


11/11

Sal,!ann nodular degeneration4nco!!on unilateral or "ilateralSecondar& to cronic %eratitis

Discrete su$er/icial stro!al o$acitiesand nodules

)ase o/ nodule !a& "e surrounded "&iron de$osits

Treat!ent- si!ilar to s$eroid degeneration

16corneal degenerations

Documents