Fig. 2
From: Evaluation of factors related to Anaesthesia-induced Lens opacity in experimental mice
Visual classification system of progressive lens opacity. a Transparent lens (grade = 1); b very mild lens opacity located in the centre of the anterior lens (grade = 2); c moderate lens opacity located in the central region (grade = 3); d moderate lens opacity located in both central and peripheral regions (grade = 4); e nearly complete opacification in the pupil area (grade = 5); f complete opacification (grade = 6). arrowhead = cornea, arrow = lens opacity