Langerhans Cell Histiocytosis (LCH) is a spectrum of disorders characterized by accumulation of histiocytes in various tissues. It is rarely encountered in ophthalmic practice and has an affinity for the orbit. We report three patients with LCH involving the lateral orbital wall, each with a different form of the condition.

We report a case of embryonal orbital rhabdomyosarcoma (RMS) in a five year old boy. Immuno-histochemistry of incisional specimen confirmed diagnosis. Eight cycles of chemotherapy along with radiotherapy resulted in over 50% reduction in size of the mass. However, increase in size was noted subsequent to completion of therapy and exenteration was deemed prudent. Margins of the excised specimen were free from tumor cells, but after five months, the patient developed multiple metastases, including skeletal muscle involvement, and died nine months after exenteration, despite repeat chemotherapy along with radiotherapy. Orbital RMS with metastasis to skeletal muscle is a rare entity.

Purpose This experimental study was conducted with the aim of evaluating the quantitative change, if any, in the phospholipids and protein contents of lens proteolipids during cataract formation, and to establish whether the phospholipid/protein content of the blood is related to cataractogenesis. Methods A total of 120 human lenses were collected. Phospholipids and protein content in proteolipids of these lenses were estimated biochemically. Blood was examined from total 60 persons. Data obtained were analyzed with the help of the ANOVA program of SPSS software (version 7.5). Results A significant (Po0.01) reduction of proteolipid-bound phospholipids was observed in cataracts as compared with the control lenses. An alteration was also noticed in the protein content of proteolipids in the cataractous lenses. Changes were also observed in serum total phospholipids (Po0.01) and total protein (Po0.01) in cataractous patients. Conclusions As proteolipids are the main constituents of the membranes of lens fibres, the alterations in its phospholipid and protein moieties may be suggestive of the disintegration of lens membranes, which ultimately leads to cataract formation. Gradual and constant variation in serum parameters may be one of the predisposing factors in cataractogenesis.