Biomedical subjects
Publications and source records attributed to B Leatherbarrow.
We report the case of a 3-month-old infant with a rare phakomatous choristoma of the orbit. This lesion is believed to be a congenital neoplasm of lenticular anlage. The clinical, radiological, and histopathological findings are presented.
Paralysis of the orbicularis oculi muscle is by far the most serious consequences of loss of function of the facial nerve. The severity of the resultant ocular problems is related to the degree and duration of this paralysis. The primary goal of the ophthalmologist in managing the patient with orbicularis oculi paralysis is to protect the cornea. The alleviation of epiphora, correction of paralytic ectropion, and amelioration of the resultant cosmetic deformities are secondary goals. The major factor in determining the most appropriate therapeutic approach in the management of the patient with a facial paralysis is whether the paralysis is temporary or permanent. In temporary paralysis, conservative methods of treatment are usually adequate and are well documented. In permanent orbicularis paralysis, the development of lid abnormalities is inevitable, and corrective lid procedures are required. The procedures required depend on the resultant dysfunction and degree of deformity. This study reviews 65 patients who underwent surgical treatment for the ophthalmic consequences of established and permanent facial palsy in order to evaluate the efficacy of their treatment.
Ten patients with dysthyroid eye disease who underwent a three wall orbital decompression procedure performed via a coronal approach were reviewed. The indications, results, complications and surgical techniques involved in this surgery are discussed. We believe that this approach offers a number of advantages over other techniques and has a role in the management of carefully selected patients with dysthyroid eye disease who have severe unilateral or bilateral proptosis, with or without dysthyroid optic neuropathy.
Two cases of traumatic fourth cranial nerve palsy are described. The treatment is discussed.
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The management of acute and established seventh nerve palsy is discussed with reference to corneal exposure, paralytic ectropion and the cosmetic defect. Details are given of how these can all be improved with relatively simple procedures which can be performed under local anaesthesia as an outpatient.
Cavernous haemangioma is considered to be the most common primary orbital tumour. We present 3 cases of cavernous haemangioma of the orbit managed by medial orbitotomy combined with medial orbital decompression. This approach was performed for lesions occurring medial to the optic nerve in an attempt to reduce the surgical morbidity reported following lateral orbitotomy or transcranial orbitotomy.
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A retrospective study of 79 secondary intraocular lens implants performed during 1984-87 in a large teaching hospital is reported. The period of follow-up ranged from 6 months to 3.9 years (mean 16.6 months). The principal indication for surgery was contact lens intolerance. Thirty-four per cent of the patients had previously undergone cataract surgery with implantation of the other eye. Eighty-three per cent of the patients achieved a visual acuity within one Snellen line of best-corrected preoperative visual acuity. A further 2.5% lost two lines of Snellen chart acuity, and 14.5% had a substantial reduction in visual acuity. We conclude that in carefully selected patients secondary intraocular lens implantation is an acceptable and often highly successful way of treating monocular aphakia and we discuss the selection and preoperative investigation of such patients.
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We present two cases of microphthalmos with cyst affecting monozygotic twins. The etiology and pathogenesis of this developmental anomaly are discussed. The diagnostic evaluation, differential diagnoses, and management options of this unique disorder are also considered.