corneal apex

apex, corneal 

The most anterior point of the cornea when the eye is in the primary position (Fig. A15). It does not automatically coincide with any common reference point (e.g. line of sight). See apical bearing; apical clearance; optical zone of cornea; primary position.
Fig. A15 Palpebral aperture PA and corneal apex CAenlarge picture
Fig. A15  Palpebral aperture PA and corneal apex CA
References in periodicals archive ?
Corneal protrusion, thinning at the corneal apex and prominent corneal nerves.
Clearance of the corneal apex --dictated by the sag or vault of the lens--by 0.
The progressive changes in shape, visualisation of the corneal apex, and reduction in corneal pachymetry are well noted in topographic examinations (Figure 2).