| lazy eye | An eye that diverges in gaze. More formally called strabismus. Can be esotropia (cross-eyed) or exotropia (wall-eyed). (12 Dec 1998) |
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| lens, eye | <microscopy> The lens in an eyepiece nearest to the eye. (05 Aug 1998) |
| light-adapted eye | An eye that has been exposed to light, with bleaching of rhodopsin (visual purple) and insensitivity to low illumination. Synonym: photopic eye. (05 Mar 2000) |
| Listing's reduced eye | A representation that simplifies calculations of retinal imagery: radius of anterior refracting surface, 5.1 mm; total length, 20 mm; distance of nodal point to retina, 15 mm. (05 Mar 2000) |