My dad has been in hospital for long.His old glasses don't give him good vision anymore.He needs a new glass.He is on bed all the time and unable to walk without oxygen support.So he hardly involves in any kind of activity due to his vision failure.He has hearing difficulties too.The chances for his improvement are purely based on the activities he should be involving himself in.Is it possible to have a bed side eye checkup just similar to a bed side xray.If so kindly explain the procedure and prerequisities in detail.Thanks in advance.