A case of implantation cyst of the conjunctiva follow ing retinal detachment surgery is reported

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A comparative study of the use of Pyrex glass tubes and the polyethylene tubes in con­junctivo-dacryocystorhinostomy is presented in 20 patients. The various factors contributing to the success of the surgery are discussed. The merits and demerits of the two types of tubes used are also highlighted.

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The present double masked, randomized and placebo control study was carried out to compare the effects of steroids and an antiprostaglandin drug on aphakic cystoid macular oedema (ACME) in 60 cases who underwent uneventful intracapsular lens extraction. These 60 eyes were equally divided into three groups depending on the type of prophylactic eye drop instilled viz. Placebo group (I), steroid group (11) and in­domethacin group (III). Angiographic incidence of ACME observed in groups I, II and III was 40%, 10% and I0%, respectively. It is concluded that prophylactic treatment with topical steroids or indomethacin have a definite role to play in reducing the incidence as well as severity of ACME. Hence, their use is recommended for the prophylaxis- of ACHE. However, to justify the superiority of indomethacin or dexamethasone over each other a large and long term compara­tive studs is suggested.

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The eye is one of the most commonly effected organs in Acquired Immune Deficiency Syndrome (AIDS), a new disease of this decade. An update of various ocular lesions along with their man­agement is described.

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A comparative study of trabeculectomy, Scheie's operation and Sub Scleral Scheie's operation (Thermal Sclerostomy under Scleral flap) is presented in this study. Results on thirty eyes divided into three groups of 10 each were evaluated. It was observed that Scheie's operation was the easiest to perform while trabeculectomy required more precision and better magnification for the proper dissection of trabecular tissue while Sub-Scleral' Scheie's operation was a relatively easier procedure. There was early formation of anterior chamber post operatively in trabeculectomy and Sub-Scleral Scheie's procedure, and relatively delayed formation in classical Scheis's operation. The type of blebs following trabeculectomy and Sub-Scleral Scheie's procedure were diffuse and thick (Type 1 and II1 while those after Scheie's operation were comparatively large and cystic (Type III). These are not only cosmetically less satisfactory but also have the potential risk of perforation and late infection Intra ocular pressure was controlled with all procedures. However the incidence of hypotony was least after trabeculectomy and maximum after Scheie's operation. It was mid-way in the group of cases operated by Sub-Scleral Scheie's procedure. Modified Scheic's procedure under a scleral flap thus combines the advantages of Trabeculectomy with the ease of performance of Scheie's operation and thus could be taken up as a valuable alternative procedure in the choice of glaucoma surgery. This study in no way provides a full answer to which surgical procedure is ideal but it will definitely help a surgeon to decide which procedure is more appropriate for a particular case.

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A case of Congenital Glaucoma with Arthrog­ryposis Multiplex Congenita is reported

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Five cases of malignant lid tumors are presented. These include one case of basal cell carcinoma, two cases of meibomian cell carcinoma and two cases of squamous cell carcinoma. The cases in which the tumor was large in size (more than 10 mm diameter) were subjected to cryotherapy to be followed by surgery at a later date (2 cases). Cryotherapy alone was considered as an ideal therapy for tumors with a wide base situated at the lid margin. In cases with tumor size less than 10 mm or with a narrow base surgical excision with surgical repair of the defect produced good results. Cryotherapy should be considered favourably, as a modality for management of eyelid malig­nancies, either prior to surgery for large size tumors (more than 10 mm- diameter) or as a primary procedure for tumors with a wide base at the lid margin. For tumors less than 10 mm in size or tumors with narrow pedicle, surgical excision & repair is considered ideal.

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Computerised Tomography has revolutionised the approach to many problems, especially orbital diseases. It is a simple, safe, non-invasive diagnostic examination done on an out patient. Computerised Tomography not only shows the presence of a lesion but also shows the extent of the disease and its relationship to other intraorbital and adjacent structures. With coronal scans, relationship of orbital disease to the optic nerve and extraocular muscles can be well demonstrated. However it must be remembered that Computerised Tomography is not a microscope to give histopathological diagnosis but we can often draw a conclusion of the nature of the disease by Computerised' Tomography appearances and clinical details. Now Computerised Tomography has become the primary investigation of choice in evaluating orbital disease.

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The importance of non-optical ocular reflexes is being increasingly realised. The existence of proprioceptive afferents from the extra ocular muscles has been known for a long time but their contribution towards the control of eye movement is not yet clear. Ishikawa (1978) demonstrated the reverse phase reflex; movement of the eye'. The Magician's forceps phenomenon was demonstrated by Mitsui et. al (1979) in exodeviation ^[2]sub . In the present study these two proprioceptive reflexes were studied in exodeviations.

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Ninety six eyes haying senile cataract and as­sociated open-angle glaucoma had been operated upon over a period of seven years by a combined procedure. The advantages of combined opera­tion have been discussed. The results were en­couraging.

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