DRDO Anti-Radiation Missile by the Indian government In February 2016, it was reported that captive flight trials of anti-radiation missile are planned for April–May this year, and the maiden flight test by year–end by the missile technologists of the DRDO. According to DRDO sources, scientists will evaluate the performance of the seeker, navigation and control system, structural capability and aerodynamic vibrations during the captive flight trials. These will be followed by ground testing and the missile will be fired from Sukhoi Su-30MKI during the actual flight trial by year-end. The missile will be inducted in about two years after conducting a number of
Subjective refraction Subjective refraction Subjective Refraction is an attempt to determine, by trial and error using the patient’s cooperation, the combination of lenses that will provide the best corrected visual acuity (BCVA). It is a clinical examination used by orthoptists, optometrists and ophthalmologists to determine a patient's need for refractive correction, in the form of glasses or contact lenses. The aim is to improve current unaided vision or vision with current glasses. Glasses must also be comfortable visually. The sharpest final refraction is not always the final script the patient wears comfortably. The following equipment is used to complete a Subjective Refraction: