522 DISEASES OF THE EVE 



of the pupil last for srvrral days when ihr lens becomes 

 absorbed. 

 Often the cure is spontaneous, but part may remain behind, 

 become opacjue, and recjuire operation. Iritis and 

 j^laucoma are not uncommon. Treat on /general Unes 

 indicated. 



B. (4) Cataracts of Eye Complications. 



1 lie t(jilo\\ in^ condiiii-ns may lead lo cataracts : — 

 Iridocyclitis, choroiditis, severe corneal ulcer, glaucoma, 



retinitis pigment<jsii, and retinal detachment. 

 Such often begin in the posterior part of the lens and 

 tend to degenerate. Treat the causative factors. 



B. (5) After Cataract. 



This is due to the opaque remains of the lens capsule, pro- 

 liferation of subscapular epithelium or new connective 

 tissue after ordinary cataract operation. 



Practice discission five weeks after extraction, but wiili a 

 very sharp knife and not an ordinary discission needle. 



An iridocystectomy may be necessary. 



ocn.AK .\i.\\ii-i:sr.\Ti()Xs of c.i-m-ral diseases. 



These will be dealt witii i^riefly seriatim. 



Pernicious anaemia causes iia?morrhages and retinitis. 



I hemophilia may result in profuse haemorrhage after injury. 



Leukaemia causes retinal hemorrhages and a distinct retinitis. 



Purpura causes subconjunctival iKumorrhage, retinal haemorrhage. 



Endocarditis causes embolism of the central artery. 



Aortic aneurysm causes mydriasis and exophthalmos or miosis, and 



Arteriosclerosis results in marlced changes in the exophthalmos 

 fundus. 



Oral sepsis to a c|uiet cyclilis, iritis and keratitis. 



Dyspepsia to iridocyclitis, choroiditis and retinitis. 



Rectal tenesmus to subconjunctival, retinal and vitreous ha.Mnor- 

 rhage. 



Acromegaly to bitemporal hemianopsia, reduced acuteness of vision, 

 optic neuritis, optic atrophv, .some ocular parahsis. exophthalmos, 

 epiphora and eye pain. 



Exophthalmic goitre to exophthalmos and corneal ulcers, ocular 

 j>aresis. 



Cerebrospinal meningitis to conjunctival (vdema, ocular paresis, 

 strabismus, ptosis, nystagmus, keratitis, optic neuritis and atrophy. 



Dij^htheria to paralysis of extrinsic muscles and optic neuritis. 



