"Okay, I would go and meet him right away and inform my friend regarding the case" said Watson, before the conversation ended over the phone. He felt room was a bit too dark and decided to pull the curtains. And the moment he pulled the curtains he closed his eyes. " Ahh! It would take some time to adjust!"

That is typical of Dr.Watson, he would always use pronouns for the medical terminologies, perhaps he suffers from selective amnesia with respect to the medical terms. Perhaps he wanted to say...