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PURPOSE Psychophysical methods of measuring macular pigment (MP) use comparisons of short- and midwave light in the fovea and parafovea to derive optical density estimates. This light must pass through the crystalline lens before absorption by the MPs can occur. The effect of lens absorption on these measures has not been adequately determined. The present(More)
Diabetics may have an increased susceptibility to cutaneous blister formation clinically manifest as the bullous eruption of diabetes. We evaluated the mechanical force necessary to induce suction blisters in fifteen insulin-dependent diabetics and twenty age-matched normal controls. The mean suction blister threshold for the diabetics was 31.9 minutes(More)
Emergent orbital decompression in tense orbital hemorrhage with compromised ophthalmic blood flow may be achieved with lateral canthotomy, defined as incision of the lateral canthal tendon, and cantholysis, defined as canthotomy combined with disinsertion of at least the inferior crus of the lateral canthal tendon. This study was performed to determine(More)
PURPOSE To evaluate the physiological effects of hypercapnia on the retrobulbar vasculature in ocular hypertension (OH) and open-angle glaucoma (OAG). METHODS Peak systolic velocity (PSV), end-diastolic velocity (EDV) and resistive index (RI) of the ophthalmic (OA) and central retinal arteries (CRA) were evaluated in 12 eyes with OH and 8 eyes with OAG(More)
BACKGROUND/AIMS To compare the penetration of levofloxacin, ofloxacin and ciprofloxacin in the aqueous humour of eyes with functioning filtering blebs. METHODS In this investigator-masked study, 48 patients with functioning filtering blebs requiring cataract surgery were randomised into six groups of eight patients. Groups 1, 2 and 3 received topical(More)
Spontaneous orbital subperiosteal hematomas are rare entities. They are often associated with systemic coagulopathies. We present two cases of spontaneous orbital subperiosteal hematomas in patients with systemic coagulopathies resulting from liver disease. One patient was diagnosed with hepatitis B and had spontaneous resolution of the hematoma. Another(More)
Skin necrosis is a rare complication of heparin administration that is usually localized to injection sites. A 32-year-old insulin-dependent diabetic patient, receiving intravenous (IV) and low-dose heparin sodium therapy, had cutaneous necrosis in areas distant to the sites of injection. Prior to the onset of cutaneous lesions, thrombocytopenia develop]ed(More)
Diabetic retinopathy is the leading cause of new blindness in the 20 to 74-age group in the United States. The American Academy of Ophthalmology (AAO) and American Diabetes Association (ADA) have recommended guidelines for eye examination to assist primary care physicians in managing these patients. The purpose of this study is to investigate the patterns(More)
Trichiasis is a common condition of multiple etiologies. Cryosurgery has been advocated as an effective means of treatment but may be associated with serious complications, including scar, skin depigmentation, and lid notching. We treated eight consecutive eyelids with the argon laser. At the end of a 3-month follow-up period, no recurrence was noted. The(More)
Two patients with delayed pressure urticaria were studied to define some of the physical parameters related to experimental lesion induction using a pressure-testing device. Graded pressures from 48 to 234 gm/mm2 were applied for 1 to 180 seconds on several anatomic areas. Experimentally induced lesions were symptomatically, clinically, and histologically(More)