21. Many spotted animals are not registered because they lack a visible white sclera or striped hooves. 22. Among other variances, the northern skink is smaller and has darker eyes with a black sclera . 23. These differed from the eyes of most trilobites in having comparatively few lenses spaced between deep sclera . 24. Follicles may also appear at the junction of the cornea and the sclera ( limbal follicles ). 25. An early, technical cause of failure may be an excessively tight stitch cheesewiring through the sclera . 26. This calculation needs to detect the boundary of iris and the white sclera ( limbus tracking ). 27. They then pierce the sclera , travel between sclera and choroid to reach the iris dilator muscle. 28. They then pierce the sclera, travel between sclera and choroid to reach the iris dilator muscle. 29. :There's a huge amount that's just how much sclera one can see. 30. More recent research has explored using vein patterns in both the iris and the sclera for recognition.
