Keratoacanthoma (KA) is a benign epithelial tumor which presents clinically as a proliferating dome-shaped keratin-filled crater. The lesion occurs predominantly upon sun-exposed areas of the body and is known to arise from hair follicle. Actinic rays are a major contributing factor in the etiology. It simulates grossly as well as microscopically a low-grade squamous cell carcinoma. KAs occur h...

.................................. We present a case of a sixty years old Asian male who presented to us with gradual decrease in vision of both eyes. Slit lamp examination revealed paracentral thinning with a dome-shaped excavation in the posterior corneal surface in each eye. Other than the early lens changes, rest of the ocular examination was normal. A diagnosis of bilateral Posterior Kerat...

The main purpose of this study is to develop a piece of software for the construction of spherical immersive displays. In the process of designing spherical displays, it is necessary to consider about optical design before their construction. A dome-shaped screen usually produces some distortion on the projected image. The pre-distortion method is generally used to compensate that distortion. O...