1994
DOI: 10.3928/1081-597x-19940501-05
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Induction of Astigmatism by Straight Transverse Corneal Incisions, 45° Long, at Different Clear Zones in Human Cadaver Eyes

Abstract: BACKGROUND: Two of the major factors affecting the amount of astigmatism correction are the length of the transverse incision and its distance from the center of the cornea. Many nomograms used in clinical practice have been created by varying the length or clear zone diameter of the incisions. A simplification of this situation has been suggested by Thornton, who has theorized that straight transverse incisions, subtending 45° of arc, have equal astigmatic corrective effect at different clear zones. Our study… Show more

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