Patent ID: 7438417

Claim:
Ophthalmic diagnostic apparatus characterized in that it includes a first body ( 2 , 6 ) to be viewed from a predetermined position ( 4 ) and a second body ( 3 , 7 , 8 ) to be viewed from said position ( 4 ), each body being adapted to display ophthalmic test patterns, the second body ( 3 , 7 , 8 ) to be viewed being disposed between the first body ( 2 , 6 ) to be viewed and the predetermined position ( 4 ), which first body ( 2 , 6 ) to be viewed has a uniform state and a state for showing signs and which second body ( 3 , 7 , 8 ) to be viewed has a transparent state and a state for showing signs, and in that it further includes a control module ( 1 , 5 ) for the first and second bodies to be viewed adapted to cause them to assume a first configuration in which the second body ( 3 , 7 , 8 ) to be viewed is in its state for showing signs and the first body ( 2 , 6 ) to be viewed is in its uniform state and a second configuration in which the second body ( 3 , 7 , 8 ) to be viewed is in its transparent state and the first body ( 2 , 6 ) to be viewed is in its state for showing signs.