photokeratoscopy

Determination of corneal curvatures and topography by photographing the corneal image of a target (usually black and white concentric rings) provided with the instrument. Measuring the size of the image and knowing the size of the object, it is possible to calculate the topography of the cornea. The theory is the same as that of the keratometer. A permanent photographic record is given with this method. The area of the cornea that is evaluated is much larger than with a keratometer. See corneal topography; keratoscope; stereophotography; videokeratoscope.

单词	photokeratoscopy
释义	photokeratoscopy photokeratoscopy Determination of corneal curvatures and topography by photographing the corneal image of a target (usually black and white concentric rings) provided with the instrument. Measuring the size of the image and knowing the size of the object, it is possible to calculate the topography of the cornea. The theory is the same as that of the keratometer. A permanent photographic record is given with this method. The area of the cornea that is evaluated is much larger than with a keratometer. See corneal topography; keratoscope; stereophotography; videokeratoscope.
随便看	i'll have none of i'll have the fish i'll have the same i'll have the same. ill have the same i'll have this i'll have to beg off i'll (have to) let you go i'll have to let you go ill have to let you go ill health ill-health ill humor ill-humored ill-humoredly ill humour ill-humoured ill-humouredly illi illia, arturo illiac illiac iv illiac-iv illiad illiad and odyssey