the aim of this study was to determine the prevalence and type of ophthalmic diseases among horse populations in the suburbian riding clubs of tehran. ophthalmologic examinations were performed in 901 horses and ocular lesions were diagnosed in 40 (4.4%) animals. in the 54 eyes of these horses that had ocular defects, 103 ocular abnormalities were detected. of those horses affected, 65% showed ...

Introduction: Patients with bilateral weakness (BW) have many difficulties in gaze stability that interfere with their normal function. The aim of this study was to evaluate ocular motor functions in patients with BW to better understand the problem of gaze instability in these patients.   Materials and Methods: Patients were referred from the Otolaryngology Department for Vestibular Assessmen...

forty patients with cataracts, as well as 40 patients with proven ocular toxoplasmosis were enrolled in this prospective clinical study. serum igg and aqueous igg in both groups were measured by enzyme-linked immunosorbent assay (elisa) and the corresponding ratios were calculated. serum igg/aqueous humor igg ratio was less than 100 in the patient group and more than 100 in the control group. o...

purpose: there are a few researches regarding the effects of islamic fasting on visual system. the aim of this study was to investigate the effects of ramadan fasting on the amplitude of accommodation (aa), near point of convergence (npc), positive and negative fusional vergences (pfv and nfv, respectively) in visually healthy fasters. methods: aa, npc, pfv and nfv at far (6m) and near (40cm) w...

cutaneous leishmaniasis (cl) is the most common parasitic disease transmitted by vectors in iran. cl is endemic in many urban and rural parts of iran and usually caused by two species of leishmania as l . major and l . tropica transmitted to humans from parasite reservoirs by the bite of female sandflies. we report a case of ocular leishmaniasis with eyelid involvement presentation. the patient...

purpose: to compare the efficacy of intravitreal clindamycin and dexamethasone with classic treatment for ocular toxoplasmosis. methods: in this prospective, randomized single-masked clinical trial a total of 68 patients with active ocular toxoplasmosis were assigned randomly to 2 treatment groups: 34 in the intravitreal clindamycin plus dexamethasone (ivcd) group and 34 in the classic treatmen...

purpose: to compare the effects of short-tem and long-term systemic corticosteroids in the treatment of confirmed ocular toxoplasmosis. methods: this randomized comparative clinical trial was performed on 69 patients with confirmed active ocular toxoplasmosis with typical clinical manifestations. the subjects were randomly assigned to receive either 10 days (group a, 33 cases) or 4-6 weeks (gro...

We investigate the problem of creating simplified representations of polygonal paths. Specifically, we look at a path simplification problem in which line segments of a simplification are required to conform with a restricted set of directions C. An algorithm is given to compute such simplified paths in O(|C|n) time, where n is the number of vertices in the original path. This result is extende...

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