Scheie (1957) developed a grading system in which Roman numerals were used to describe the degree of angle closure. In his system one determines the angle structures that are visible on gonioscopy. Larger numbers signify a narrower angle. The term “wide” was used to describe an angle in which all structures were visible. Scheie also described angle pigmentation on a scale from 0 (no pigmentation) to IV (heavy pigmentation).
 |
| The Scheie angle depth system based on visible structures. (a, Schwalbe’s line; b, anterior and posterior trabecular meshwork; c, scleral spur; d, ciliary body face; e, iris root). |
 |
| Scheie’s system of grading angle pigmentation. Larger numbers represent increasing amounts of pigmentation. |
No comments:
Post a Comment