SYSTEMIC
OCULAR LESIONS IN AIDS [D-02,J-04,]
OCULAR ADNEXA-
HERPES ZOSTER OPHTHALMICUS-
-Maculopapular rash on forehead→vesicles→pustules→crusting ulceration
-Periorbital edema
* T/T-
Systemic-
1. T.Acyclovir 1gm TDS Or
2. T. Famciclovir 250mg TDS / 750 mg OD
Topical-
1. acyclovir cream 3% TDS
2. Hydrocortisone 1 % + Fusidic acid 2% or Oxytetracycline 3% till crusts separate.
KAPOSI’S SARCOMA-
MOLLUSCUM CONTAGIOSUM-
Pox virus
Pale, waxy, umbilicated nodule.
IL chr follicular c’vitis [ d/t viral shedding in fornix]
T/T- 1. Shave excision
Conjunctival microvasculopathy
Allergic C’vitis
ANTERIOR SEGMENT LESION-
DRY EYE-
D/T- systemic malabsorption of nutrients to maintain a healthy tear film / toxicity from sys drugs.
Burning sensation & watering
T/T- Tear subs & punctual occlusion
INFECTIVE KERATITIS-
HERPES ZOSTER OPHTHALMICUS-
Acute phase-
Skin rash
Pain
Influenza like illness
Keratitis-
Acute epithelial keratitis- Dendrite / stellate lesion
Nummular keratitis- Subepithelial deposits surrounded by halo of stromal haze
Disciform keratitis
Chronic phase-
Nummular keratitis- Peripheral lesions form facets which become vascularized & infiltrated with lipids
Disciform keratitis
Neurotrophic keratitis- Ulceration→sec bact inf→ perforation
Mucus plaque keratitis
Recurrent phase.
T/T-
T. Aciclovir 800mg 5 times / day for 10 days
Oral analgesics
Topical Hydrocortisone 1% + Fusidic acid 2 % [ or oxytetracycline3 %] till the crusts separate
HERPES SIMPLEX KERATITIS-
-Central zone of epith edema overlying stromal thickening
- Surrounding Wessely’s ring of stromal ppts
-Cheesy necrotic stroma
-Ant uveitis with KPs underlying active stromal infiltration
T/T-
T Aciclovir 400mg 5 /day
Topical- Aciclovir e/o- 3 %- 5 / day for 14 days
- Ganciclovir 0.15 % e/ gel 5/ day
- Trifluorothymidine 1 % e/d 2 hrly
Debridement
MICROSPORIDIAL KERATITIS-
-Oral Albendazole
- HAART
C] POSTERIOR SEGMENT LESIONS-
HIV RETINOPATHY-
arterioles
-No effect on V/A
- No T/T
CMV RETINITIS- Folder- uvea-pg6
PORN [ uvea-pg7], ARN [uvea-pg8], Toxoplasma [uvea pg9]
FUNGAL ENDOPHTHALMITIS-
CANDIDA CHORIORETINITIS-
Unilat
Ocular pain
DOV
Floaters
White, fluffy, chorioretinal lesions with overlying vitritis
Inf can spread into vitreous-white snow-ball like or cotton ball opacities
Satellite lesion adjacent to prim lesion
T/T- IV Amphotericin B 1 gm for 4-6 wks
-5-Fluorocytosine 150mg/kg daily
-Ketoconazole 200-400mg/day
-If no response→ PPV + Intravitreal Amphotericin-B 5μg/0.1ml
PNEUMOCYSTITIS CARINII CHOROIDOPATHY-
Extrapulmonary dissemination→ choroidal inv
Seen in pts receiving inhaled aerosolized pentamidine
BL
Flat, yellow,round choroidal lesions
Vitreous NOT inv
V/A not impaired even in subfoveal inv
T/T- IV cotrimoxazole [ Trimethoprim + sulphamethoxazole ] or pentamidine.
CRYPTOCOCCUS CHOROIDITIS-
Multifocal , yellow-white, choroidal lesions
Small glistening spheres at vitreoret interface
ON inv→ Rapid visual loss
T/T- IV Amphotericin-B 1gm
-Endoph- IV Amphotericin B + PPV
D] ORBIT-
- burkitt’s lymphoma
- orbital cellulites
E] NEUROPHTHALMOLOGY-
- Cranial N palsy
-Papilloedema
-OA
-Lagophthalmos
MYAESTHENIA GRAVIS [J-05,D-03]
DEF-
An autoimmune dis in which antibodies mediate damage & destruction of acetylcholine receptors at the postsynaptic juncn in the striated ms
EPID-
PATHOGENESIS-
Antibodies → damage Ach receptors→ impaired neuromuscular contraction→ weakness & fatiguability of skeletal ms [not cardiac / invol ms]
TYPES-
Ocular
Bulbar
Generalised
SYMPTOMS-
SIGNS-
Peripheral ms weakness-arms & legs
Facial-lack of expression- Mask face
Bulbar- Dysphagia
-Dysarthria
-Diff in chewing
4.Resp- Diff breathing
5. Ocular- 90% inv
a) Ptosis-
* Insidious
* Bil & asymmetric
* Worse at the end of the day & least on awakening
* Worse on prolonged upgaze
* If one lid is elevated manually while the pt looks up, the fellow lid shows fine oscillatory movts
* COGAN TWITCH SIGN-
-Brief upshoot of the lid as the eyes saccade from depression to prim pos.
Ptosis improves after ice is kept on the lid for 2 min.
Diplopia- vertical
Nystagmus
Pseudointernuclear o’plegia
INV-
EDROPHONIUM TEST-
Short acting anticholinesterase → increases the amt of Ach at the NM juncn→ Transient improvement of ptosis & diplopia
Performed as foll-
Objective baseline measurement of ptosis & diplopia [hess chart]
IV Atropine 0.3mg [to counteract muscarinic S/E]
IV 0.2ml [ 2mg ] Edrophonium HCl
Wait for 60 sec
Inject 0.8ml [8mg ]
Final measurements within 5min & results compared
Electromyography
Increased ser Ach receptor antibodies level
Thoracic CT scan & MRI- for thymoma
T/T-
Anticholinesterase drugs-Pyridostigmine 60mg qid
-Neostigmine
2. Steroids.[ may precipitate resp crisis],so close monitoring is a must
3. Immunosuppressive – Azathioprine [1-3mg/kg/day]-OD /BD
_ Cyclosporin [2-5mg/kg/day]
4. Plasma exchange
5. Intravenous immunoglobulins
6. Thymectomy
7. For ptosis- BIL Frontalis sling
Diff from Eaton Lambert syn-
Eaton Lambert syn-
Affects pre-synaptic receptor [ MG- postsynaptic]
Power is increased foll exercise
Reduced tendon reflex [ nml in MG]
Seen in oat cell carcinoma
SARCOIDOSIS
DEF-
Non-caseating , granulomatous disease.
SYSTEMIC FEATURES-
LOFGREN SYN-
Fever
Erhythema nodosum
BL Hilar LNpathy
Arthralgia
Acute iridocyclitis
HEERFORDT SYN-
-Bronchiectasis
-BL Hilar LNpathy
-SKIN- EN
-Lupus pernio-indurated blue plaques
OCULAR FEATURES-
ANTERIOR SEGMENT-
-Mutton fat KPs
-Choroidal granulomas
- Chorioretinitis
-Parsplanitis
* Cataract
* Glaucoma
POSTERIOR SEGMENT-
* Vitritis & snowballs
* Papilloedema
* Optic neuritis
* Neuroretinitis
* Retinal vasculitis
* perivascular granulomata & ON granuloma
* Perivenous exud with CANDLE WAX DRIPPING
* Ret NV
* VH
* BRVO & CRVO
INV-
Skin test – Kweim test
_ Mantoux
Ser. Lysozyme
Ser. Globulin
Ser. ACE
Ser Ca -raised
X-ray –chest & phalanges
Gallium scan
Biopsy –Lacrimal gld & conj nodules
BAL-broncho alveolar lavage
Bronchoscopy with transbronchial biopsy
T/T- 1) Steroids- periocular- Triamcinolone acetonide 40mg or
Methyl prednisone 40 mg
( ant / post subtenon)
-Systemic – oral prednisone 1 mg/kg/ day
2) Low dose Methotrexate
NEUROFIBROMATOSIS
{ PHAKOMATOSIS }
VON RECKLINGHAUSEN’S DISEASE
NF-1
Gene locus- 17q11
AD
NEURAL TUMORS-
CNS
Cranial Ns
Peripheral Ns
Sympathetic Ns
SKELETAL-
SKIN-
OCULAR-
Exophthalmos
-Neurilemmoma
-Plexiform neurofibroma
- Meningioma
2.Lid-
Neurofibroma – Plexiform
_ nodular
3.Iris-
Lisch nodules
Cong ectropion uveae
Mamillations
4.Prominent corneal Ns
5.Glaucoma
Pathogenesis-
Obstrn of aq outflow by NF tiss
Dev angle anomaly
Forward displacement of peripheral iris asstd with NF thickening of CB→ sec angle closure
Contraction of fibrovascular memb→ Synechial angle closure
6. Fundus- Choroidal naevi-watch for melanomatous changes
- Ret astrocytoma-no t/t
NEUROFIBROMATOSIS 2
-Perifoveal epiret membrane
TUBEROUS SCLEROSIS
- MR
-Skin lesions- Adenoma sebaceum
- Ash-leaf spots
- Shagreen patch
- Depigmented naevi
- Fibroma molluscum
-Fibrous plaques on forehead
-Subungal hamartoma
- CNS- Ependymomas
-Astrocytomas
-OCULAR-
* Retinal astrocytomas-50%
# white semitransparent or mulberry appearing tum in the superficial retina.
* Hypopigmented patches on iris & ret
* Papilloedema & VI N palsy
INV-
CBC
.CT and MRI-BRAIN
EEG
Echocardiography
X ray chest
CT scan –abdomen.
Rx-
Genetic councelling
Retinal astrocytomas require no t/t
VON HIPPEL LINDAU SYN
[J-07, J-05]
Gene- Chromosome 3
Tumors-
-Haemangioblastoma- cerebellum, spinal cord, medulla ,pons
- Renal cell ca
-Phaeochromocytoma
Cysts- Renal , pancreatic. Hepatic, epididymis, ovary, pulmonary
Polycythaemia
Ocular- Capillary haemangioma of retina / ONH →
--Earliest lesion
--small ,red,orange –red tum with a prominent dilated feeding A & draining V
--Subretinal exud
--SRF
--Total RD
--Macular traction & ERM
INV-
CBC
Ser electrolytes
Urine levels of epinephrine & Norepinephrine
MRI brain
CT scan –abdo
IV fluorescein angio
T/T-
Retinal capillary haemangioblastoma-
- Proton beam irradiation
- Microsurgical resection
-Enucleation ( blind painful eye)
STURGE WEBER SYNDROME-
- Leptomeninges
- Eyes
* Bisystem- Face& Eyes
Or
- Face & Leptomeninges
Presents at birth.
SIGNS-
A ) FACE- Port wine stain-over the V N distribution
B) LEPTOMENINGES-
- Seizures
- Hemiparesis
-Hemianopia
- MR
C) EYES-
INV-
X-ray – “Tramline” cerebral calcification
CT scan & MRI- for haemangioma
T/T-
Intractable seizures→ Subtotal Hemispherectomy
Portwine stain→ dermatological laser
Choroidal haemangioma-
Glaucoma- Latanoprost 0.005% HS
- Goniotomy- For angle anomalies
- Trabeculotomy + Trabeculectomy→
Removes barrier to aq outflow
OCULAR TUBERCULOSIS
DEF-
Chronic granulomatous infection caused by tubercle bacilli
MORPHOLOGY-
Slender rods with branching filamentous forms
Resemble fungal mycelium ,so k/as mycobact i.e fungus like bacteria
Do not stain readily , but once stained resist decolourisation with dilute mineral acid – k/as Acid fast
Aerobic
Non-motile
N0n-capsulated
Non-sporing
Slow growth
PATHOGENESIS-
Inhalation of aerosolized droplets→ Asymptomatic , self-limited pulmonary granuloma→ resolves & becomes dormant→ reactivates later→ disseminates to other organs.
OCULAR TB-
CONJ-
CORNEA-
Phlyctenular keratitis
Fascicular ulcer-
Phlyctenular ulcer migrates slowly from the limbus to the centre of the cor in a serpiginious way.
It carries a leash of BVs which lie in a shallow gutter formed by the ulcer.
Superficial allergic type of ulcer
Never perforates
When the ulcer heals, the BVs attenuate with a dense cor opacity near the apex of the ulcer
UVEA-
Metastatic [granulomatous]-
Satellites near the pupillary or ciliary margin
- smaller satellites may be present
- Nodules contain giant cells
Exudative [non-granulomatous]
-Tuberculomas
Tubercles-Post pole
- Solitary/multiple
-Multifocal
-0.3-3mm dia
- Yellowish, grayish or white
-overlying serous RD
Tuberculomas- Solitary
-Grayish white
-Raised
-2-3 DD
-Overlying exud RD
RETINA-
Eale’s disease [retinal periphlebitis]-
INV-
Sputum exam for AFB
Chest X-ray
Montoux test
Anticord factor antibody
T/T-
5 anti-TB drugs
1) ISONIAZID [H]- 5mg/kg
s/e – optic neuritis
2) RIFAMPICIN [R]- 10mg/kg
S/E –Hepatitis
- Red –orange urine
3) STREPTOMYCIN [S]-15mg/kg
S/E- Ototoxic
4) ETHAMBUTOL [E]- 20mg/kg
S/E- ON
-Red-green colour blindness
PYRAZINAMIDE [Z]-25mg/kg
S/E –Hepatitis
-Hyperuricemia
LEPROSY [J-03, J-02]
DEF-
Chronic granulomatous infn caused by an acid fast bacilli-myco leprae.
MORPHOLOGY-
Straight / slightly curved rods
Acid fast
Gm +ve
Appears as agglomerates,being bound by a lipid subst- ‘glia’.These masses are k/as- “GLOBI”
Parallel rows of bacilli in globi gives ‘ cigar bundle’ appear.
CULTURE-
Specimen collected from –skin, ear lobule, nasal mucosa
Smear stained with Zeihl-Nelson stain using 5% H2SO4 acid for decolourization
Grading of smear-
1-10 bacilli / 100 fields – 1+
1-10 bacilli / 10 fields- 2+
1-10 bacilli /field - 3+
10-100 bacilli / field - 4+
100-1000 bacilli / field – 5+
> 1000 bacilli & globi / field -6+
Bacteriological index- Total no of + / no of smear
Morphological index- % uniformly stained bacilli / total no of bacilli counted
Leprosy – skin
- nose
-eyes
- peripheral Ns
-bones
- testes
TYPES-
1 . LEPROMATOUS-
* cutaneous
* decreased CMI
* Direct ocular inv
TUBERCULOID-
PATHOLOGY-
Tuberculoid form-
Granuloma + Lack of large no of bacilli [ b/o good CMI]
Lepromatous form-
Macrophages with numerous AFB [ b/o decreased CMI]
Iris pearls- Macrophages filled with bacilli
SYSTEMIC –
SKIN-
Hypopigmentation
Erhythema nodosum
Plaques & nodules
NERVES-
Skin anaesthesia
Thickened peripheral Ns
Facial palsy
DEFORMITIES-
OCULAR-
LIDS-
Madarosis
Trichiasis
Lagophthalmos
CONJ & SCLERA-
Conjunctivitis
Episcleritis
Scleritis
CORNEA-
Neurotrophic KP
Cor anaesthesia
Keratitis
UVEA-
INV-
Skin biopsy
Skin test- Mitsuda reac
T/T-
Trichiasis-
Epilation
Electrolysis-A fine electrocautery needle is passed down into the hair follicle & a current of 2 mAmp is passed
Cryotherapy [ double freeze –thaw at -20 deg C]
Argon laser ablation [ 50 µm. 0.2 sec, 1000mW]
Surgery-Full-thickness wedge resection or Anterior lamellar excision
Lagophthalmos- Tarsorrhaphy
Episcleritis- Fluorometholone e/d qid
-oral NSAIDs
Scleritis- oral NSAIDS
- oral steroids
- Immunosuppressants- cyclophosphomide, azathioprine,cyclosporine
5. Conjunctivitis- antibiotic e/d or e/o
6.Keratitis- Cycloplegic-mydriatic
-Analgesic
-Antibiotic e/d
-BSCL- for perforation → Tiss adhesive→ Therapeautic KP
7. Iritis- Topical mydriatic & steroid
8. Systemic-
T. Dapsone 100mg /day
Or T. Rifampicin [ 600mg]/ Clofazimin [100mg]
VOGT KOYANAGI HARADA SYN
[J-05, D-01]
Also k/as Uveomeningeal syn
DEF-
Idiopathic multisystem disorder with granulomatous uveitis.
EPIDEMIOLOGY-
BL
4-5th decade
Females
HLA-DR-4 & HLA-DW-15
Pigmented race
Asians [Japanese]
VKH-
VOGT –KOYANAGI- Skin + Ant uveitis
HARADA – CNS + Exud RD
C/F- 4 phases
Prodromal
Acute uveitic
Convalescent
Chronic recurrent
PRODROMAL PHASE-
CNS- Meningitis- Headache & neck stiffness
-Encephalopathy-Convulsions, paresis & CN palsies
AUDITORY- Vertigo, deafness, tinnitus
ACUTE UVEITIC-
Anterior uveitis-
AC cells
KPs- small & large
-Granulomatous
* Iris nodules
* Synechiae
Posterior uveitis-
*Exud RD
* Dalen Fuch’s nodules
* Sunset glow fundus (depigmented fundus)
* NV
* `Vitritis
* H’age
* Edema- optic disc & macula
CONVALESECENT PHASE-
CHRONIC RECURRENT PHASE-
Ant uveitis is more prominent.
-NV in ac angle
Posterior uveitis-
Retinal vasculitis
Subretinal NV- H’age
INV-
FFA- Dye leakage from RPE & accumulation in subret space- Hyperfluorescent dots
ICG- Choroidal NV
Ultrasound biomicroscopy-
Narrow AC angle
Thick choroid
Thick sclera
CSF analysis-
CSF Pleocytosis
Increase CSF protein
T/T-
Steroids-
IV prednisolone 100-200mg/day for 1 week
Oral steroids 40-80mg/day for 3 mo ( till FA shows absent leakage)
Topical 0.1 % Dexamethasone 4-6 times/ day
Cycloplegic 2-4 times/ day for 3mo till AC cells clear
If no response-
Immmunosuppressants
Azathioprine 1-3 mg/kg/day
Cyclophosphamide 1-3 mg/kg/day
Cyclosporine 2.5 mg/kg/day
COMPLICATIONS-
Sec angle closure glauc
Subret NV
Exud RD
BEHCET’S DISEASE [J-02]
Idiopathic
Recurrent
Multisystem dis
Young men
HLA-B-5
3rd-4th decade
Presents with aphthous ulcer.
MAJOR diagnostic criteria-
1. RECURRENT APHTHOUS ULCER-
Painful
Shallow
Yellowish necrotic base
2. SKIN LESIONS-
Erythema nodosum
Subcutaneous thrombophlebitis
Papulo-vesicular-pustular rash
PATHERGY TEST- on puncturing the skin with a needle, a pustule appears
DERMATOGRAPHISM-on stroking the skin corresponding lines appear.
3. RECURRENT GENITAL ULCERATION-
Penis & scrotum- males
Labia & vagina- females
UVEITIS-Both ant & post
MINOR Diagnostic criteria-
ARTHRITIS- Knees, ankles, sacroiliac jts
EPIDIDYMITIS
INTESTINAL ULCERATION
VASCULAR- obliterative thrombophlebitis & aneurysm
CNS- Brainstem syn
-Meningoencephalitis
Complete Behcet;s dis- All 4 MAJOR criteria
Incomplete Behcet’s dis-
3 MAJOR
2 MAJOR + 2minor
Uveitis + 1 MAJOR
Uveitis + 2 minor
OCULAR-
T/T – Steroids
DEMYELINATING DISEASES [j-04]
MULTIPLE SCLEROSIS-
Autoimmune dis
Relapsing-remitting
Adolescence-mid age
2F=M
PATHOLOGY-
Focal inflamn
Demyelination & gliosis or scarring
Lesions are disseminated thru out the brain,so also k/as Disseminated sclerosis
Selective demyelination with relative sparing of axons-hallmark
PLAQUES- multiple grayish,sclerotic lesions scattered in the white matter-periventricular
Medullary sheaths of the nerve fibres are specially attacked,axons being spared
C/F- OCULAR
Retrobulbar neuritis-Hemianopic & quadrantic field changes
OA
Retinal venous sheathing
Nystagmus [very imp sign]-horizontal,ataxic &increases on extreme lat gaze
RAPD
EO ms paralysis
INO
VI n Palsy
SYSTEMIC-
INV-M 3V 4AE
MRI- head & spine-periventricular plaques
CT-scan-perivascular & deep white matter lesions
Serum vit B12 levels
VDRL
ESR
Antinuclear antibody
Anti-DNA antibodies
Angiotensin converting enzyme
VEP
Automated perimetry
T/T-PIIP
Pulse IV methylprednisolone
Interferon –B1a or IFN-B1b
IV immunoglobins
Physiotherapy
NEUROMYELITIS OPTICA [DEVIC’S DISEASE ] [J-03]
ACUTE DISSEMINATED ENCEPHALOMYELITIS [ADEM]
Young adults
Fever,headache,drowsiness & convulsions
EYE- Retrobulbar neuritis
-Papillitis
-OA
DIFFUSE PERIAXIAL ENCEPHALITIS [SCHILDER’S DIS]
infancy & childhood
Massive demyelination in the cerebral & cerebellar hemisphere f/b gliosis
Systemic –deafness,psychosis,aphasia,UMN palsy,ataxia
OCULAR-OccIpital lobe lesion-LOV
-Brainstem lesion-nystagmus,ocular palsies & papillary def
GIANT CELL ARTERITIS
-Diag & T/T-[J-07]
DEF- Granulomatous necrotizing arteritis
-Predilection for- Superficial temporal A
-Ophthalmic A
-Posterior ciliary
-Proximal vertebral
-Severity is astd with the quantity of elastic tiss in the media & adventitia.
-Intracranial As [ little elastic tiss] are spared.
-7-8th decade
C/F-
Scalp tenderness
Headache-frontal ,occipital, temporal areas or generalized
Jaw claudication-ischaemia of masseter
Polymyalgia rheumatica-pain & stiffness in shoulders,worse in the morn & after exertion
Occult arteritis-Sudden onset blindness with min systemic upset
Superficial temporal arteritis-thick,tender,inflamed,nodular As.Pulsation is initially present,but later ceases [strongly suggestive of GCA].best location to palpate-in front of the pinna
AION
Rare- amaurosis fugax,CW spots,CRAO,cilioretinal A occlusion,pupil-sparing III n palsy,ocular ischaemic sy
INV-
ESR- > 60 mm/hr [not diagnostic]
C- reactive protein-raised [ “ ]-2.45mg/dl
Temporal A biopsy-
Steroids shud never be withheld pending biopsy,which shud be ideally performed within 3 days of commencing steroids.Steroids after 7days impairs the nml histology response
Ideal site- ipsilateral temple as it avoids damage to auriculotemporal N
Atleast 2.5cm of the A shud be taken & serial sections examined b/o the phenomenon of ‘skip lesions’: segments of histologically normal arterial wall alternate with seg of granulomatous inflamn
Rx-
IV Methyl prednisolone 1g/day for 3 days + oral prednisone 80mg/day
After 3 days oral dose is reduced to 60mg & then 50mg for 1 week each
Daily dose is reduced by 5mg weekly until 10mg is reached
Maintenance daily dose-10mg
T/t is reqd for 1-2 years
Azathioprine