Mindblown: a blog about philosophy.

An instrument that creates an impression of solidity or depth of objects seen by combining images of two pictures. An instrument that allows for simultaneous viewing of two images, producing a three-dimensional effect.  

Radiography from two slightly different angles to simulate the distance between the viewer’s eyes (usually 4 in.) so that a stereoscopic effect is produced when the radiographs are viewed through a stereoscope. A radiographic procedure characterized by the acquisition of two consecutive films in quick succession, each captured from a predetermined angle of projection. This…

Photography that produces the effect of solidity or depth in the pictures. A photograph showing the solidity or depth of a microscopic subject.  

A prism-refracting device for use in correcting extraocular eye muscle imbalance.  

A mirror-reflecting device for the treatment of strabismus. A patented device that uses mirror reflections for orthoptic treatment of squints.  

An ophthalmoscope that is designed to permit the fundus to be seen simultaneously by both eyes of the examiner.  

The measurement of a solid body or the cubic contents of a hollow body.  

The study of three-dimensional aspects of objects.  

A condition in which two or more substances may have the same empirical formula but mirror-image structural formulas.  

Surgical incision by use of stereotaxis during brain surgery.