Purpose: To evaluate the incidence of Leber’s Congenital Amaurosis (LCA) in low vision children referred to electrophysiology ward of Farabi Eye Hospital, and review the clinical features of disease and Electroretiongraphy (ERG) test values to confirm the diagnosis and severity of the disease in Iran. Design: Prospective observational case series Methods: Two-hundred and fifteen cases of low vi...

Program Number: 5754 Poster Board Number: A0205 Presentation Time: 8:00 AM–9:45 AM Adapting the RETeval ERG device into a veterinary tool Olga Kraszewska1, Brian Cichocki2, Quentin Davis1. 1Ophthalmology, LKC Technologies, North Richland Hills, TX; 2Texas Veterinary Ophthalmology, Fort Worth, TX. Purpose: The RETeval is a portable ERG/VEP device that is used to assess visual function in humans....

We discuss the features that mark the Flat Spectrum Radio Quasars from the BL Lacertae objects. We propose that FSRQs exceeding L ∼ 10 46 erg s −1 are powered by black hole accreting at rates ˙ m ∼ 1 ÷ 10; their power is dominated by the disk components, thermal and BZ. Instead, sources accreting at rates ˙ m ∼ 10 −2 ÷ 10 −3 radiate in the BL Lac mode; here the power is mainly non-thermal, and ...

We report a Chandra observation of the z = 3.395 radio galaxy B2 0902+343. The unresolved X-ray source is centred on the active nucleus. The spectrum is well fit by a flat power law of photon index of Γ ∼ 1.1 with intrinsic absorption of 8 × 10 22 cm −2 , and an intrinsic 2– 10 keV luminosity of 3.3 × 10 45 erg s −1. More complex models which allow for a steeper spectral index cause the column ...

Deep ROSAT PSPC and HRI observations of the nuclear starburst, UV flat spectrum spiral NGC 6217 reveal a jet-like X-ray filament extending out 2. ′ 7 (18.8 kpc) to the SW of the galaxy. Radio images of NGC 6217 show an extent in the same direction, giving further evidence for a one-sided X-ray jet interpretation of this feature. It's X-ray spectrum is harder than that of NGC 6217 and the lumino...

AIM To study the effects of naringenin eye drops on NaIO(3)-induced retinal pigment epithelium (RPE) degeneration and laser-induced choroidal neovascularization (CNV) in rat eyes. METHODS The 35mg/kg NaIO(3)-induced RPE degeneration was prevented by 10g/L naringenin eye drops 3 times a day for 7 days in advance of NaIO(3) injection, and then 2 to 4 weeks thereafter, RPE function was measured ...

PURPOSE Vasostatin 48 (VS48) is a peptide of 48 amino acids derived from calreticulin. This study aimed to investigate the effects of topical application of VS48 eyedrops on experimental choroidal neovascularization (CNV). METHODS Recombinant VS48 was expressed and purified as a thioredoxin (TRX)-fused protein, TRX-VS48. The anti-angiogenic effects of TRX-VS48 were validated by migration and ...

introduction dominant process in arid and semi-arid region is dynamic of wind that carries the sand and caused damage to several facilities and human settlements. there are many human settlements with low population and mostly small and scattered in different parts of foothills of dasht-e lut (lut desert), especially in mountainous margins of alluvial fans. residential and cultivation area of t...

the kashan erg is one of the most important sand dune complexes in iran. being affected by wind erosion, theerg's borderlands face numerous problems as a result of sand movement. to evaluate the risk of sands moving intoresidential areas near the kashan erg, anemometry data from synoptic stations located in kashan, ardestan, meimeh,naeen, and qom were collected and analyzed to calculate the san...