After blunt trauma to eye, a patient develops circumcorneal congestion. The further test done is -

As a result of the blunt trauma to the eye the antero-posterior diameter of the eye decreases and there is simultaneous expansion at the equatorial plane associated with a short lived increase in intraocular pressure. This increase in IOP may cause globe rupture or other complications. This pt has cirumcorneal congestion which is due to increase in IOP and thus the best investgation for him is option (D).