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• W2885609079 abstract "INTRODUCTION:The designation “Ocular motor system” refers to the entire somatic motorsystem that controls the position and movements of the eyes. This system includesthe extraocular muscles, the cranial nerves and nuclei that innervate them and theforces that stimulate and inhibit their actions. Restricted Ocular mobility could be theresult of paralysis of the nerves supplying the extra ocular muscles (neurogenic) ordue to the pathology in the muscle itself (myogenic) or there may be the pathology atthe myoneural junction (neuro muscular).Since the treatment for these conditions is different from one another, itbecomes clinically important to differentiate them, thus avoiding elaborateneurological investigations it is not necessary. AIM OF STUDY: • To find out the common etiology and incidence of the infra nuclearneurological lesions of III, IV and VI cranial nerves. To study the pattern of recovery in each type of nerve palsy in these cases. To emphasize the importance of non invasive techniques in these cases toclinch the localization of involvement and probable aetiology according tolocalization. To find out the mode of treatment to be followed in cases of both recent andestablished cases of neurological palsies involving III, IV and VI cranialnerves. MATERIALS AND METHODS: This study was conducted in department of ophthalmology, CoimbatoreMedical College Hospital, Coimbatore. The study period was from august 2007 toaugust 2009. All patients attending to ophthalmology department and referred casesfrom other departments, who are having neurologic lesion of III, IV and VI cranialnerves mainly infra nuclear neuropathic ocular movement disorder were included inthis study.Patients with supra nuclear, nuclear, inter nuclear and myogenic types wereexcluded from the study by doing suitable examination and investigations.SUMMARY: Of the 170 cases of ocular cranial nerve palsies, 82.35% occurred between 20 –70 years, the range being 1 ½ - 70 years. The maximum number of III nervepalsies were found only between 60 – 69 years. All trochlear nerve palsies arebetween 20 to 44 years of age. There is a wide distribution of cases of VI nervepalsies, from 2nd to 7th decade and multiple cranial nerve palsies 50% of casesfell between 40 – 60 years of age. CONCLUSION: From this study of 170 cases of cranial nerve palsies it is concluded that.1. The VI cranial nerve is the most commonly affected nerve followed by IIInerves and multiple cranial nerves and lastly the IV cranial nerve.2. All these Ocular motor nerves can be affected by various pathologicalconditions.3. Commonest presenting symptoms were diplopia, drooping of eye lid, pain andheadache especially on the affected side.4. Among the systemic conditions, diabetes followed by hypertension form themost commonly occurring association.5. Closed head trauma even trivial is associated with trochlear nerve palsieswhile forcible head trauma as in cases of RTA leading III & VI cranial nervepalsies also.6. There is no specific preponderance of infection in this series.7. In 73 cases no specific cause could be made out8. patients belonging to older age group were suffering from ocular motor cranialnerve palsies due to micro angiopathic lesions while trauma was the maincause in younger age group;9. Non invasive procedures like CT & MRI were invaluable in diagnosis inselected cases.10. Cases due to non specific neuritis or due to micro angiopathic lesionssecondary to diabetes, hypertension etc recovered with in 4 months regardlessof the nerve affected.11. Longer follow-up, better facilities to do MRI may help in finding out specificaetiologies in these cases classified as nonspecific neuritis." @default.
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• W2885609079 date "2010-03-01" @default.
• W2885609079 modified "2023-09-27" @default.
• W2885609079 title "A clinical study of ocular motor nerve palsies" @default.
• W2885609079 hasPublicationYear "2010" @default.
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