In this research work, a multibeam antenna which is a combination of a beamformer network (BFN) and a linear array antenna, has been designed. A Rotman lens has been chosen as beamformer network and Vivaldi antennas have been selected for constructing array antenna. The Substrate Integrated Waveguide (SIW) was used for implementing Rotman lens. After explanation the structure of Substrate integ...

Accurate measurement and knowledge of dose delivered under eye shield during superficial X-ray radiotherapy is required for patient peripheral dose assessment. Critical structures can include the cornea, lens and retina. Measurement of dose under eye shields has been historically performed with Thermoluminescent Dosimeters (TLD's) due to their small size and design. Restrictions include the ene...

purpose: to evaluate visual function in patients with different types of light-filtering intraocular lenses (iols) methods: in this prospective comparative clinical study cataract patients with different types of iols in khatam-al-anbia eye hospital, mashhad were enrolled and followed for three months postoperatively. corrected distance visual acuity (cdva), color discrimination under photopic ...

We evaluated the effect of an aldose reductase inhibitor, fidarestat, on diabetic retinopathy (DR) and cataract in spontaneously diabetic Torii (SDT) rats. Four rat groups were included: untreated, lowand high-dose (8 and 32 mg/kg/day) fidarestat-treated SDT rats, and nondiabetic control Sprague-Dawley rats. DR and cataract were evaluated and retinal and lens sorbitol, reduced glutathione (GSH)...

The differential diagnoses for phacolytic glaucoma are acute angle closure glaucoma, open angle glaucoma with uveitis, neovascular glaucoma, and glaucoma secondary to trauma. We report an unusual case where the dislocated cataractous lens firmly adherent to the corneal endothelium evoked a cellular reaction similar to phacolytic glaucoma but clinically appeared like a deep corneal abscess. The ...

In the article “Contact Lens-Assisted Collagen CrossInking (CACXL): A New Technique for Cross-Linking Thin Corneas” by Jacob et al.,1 the authors proposed a contact lens for extra protection of corneal collagen cross-linking (CXL) in thin corneas (range: 350 to 498 μm; mean: 377 μm). In their study, the treated corneas are protected by the contact lens and riboflavin (B2). I intend to provide a...

The crystalline lens in the cichlid fish Aequidens pulcher undergoes a transformation of its optical properties every dawn and dusk as the eye adapts to changes in light conditions. During dusk the transformation result in an increase of the refractive power in the lens cortex, the outermost 40 percent. The change is thought to match the optical properties of the lens to the requirements of the...

INTRODUCTION Heliotropium indicum has several uses in traditional medicine attributable to its numerous bioactive compounds. It is used as a traditional remedy for cataracts in Ghana without any scientific verification. This study aimed at verifying the anti-cataract properties of an aqueous whole plant extract of H. indicum. METHODS The effect (cataract score) of 30, 100, and 300 mg kg(-1) e...