Abstract | BACKGROUND: METHODS: Videokeratography using the normalized scale of the Topographic Modeling System was used as a guide in determining the location and the length of incisions and resections. Nine eyes were treated with both relaxing incisions and a wedge resection. All patients had more than 3.00 diopters (D) of refractive astigmatism. All patients were intolerant of spectacles or contact lenses. The depth of the corneal relaxing incisions was constant at 0.5 mm and the width of the corneal wedge resections was constant at 0.75 mm. RESULTS: The relaxing incisions produced flattening of the steeper meridian and the wedge resection produced steepening of the flatter meridian. The average preoperative keratometric astigmatism was 7.44 D (range, 3.50 to 11.00 D) and the average refractive astigmatism was 5.56 D (range, 4.00 to 8.00 D). The average preoperative spherical equivalent was 0.08 D (range, -7.00 to 4.25 D). Postoperatively, the average keratometric astigmatism was 2.97 D (range, 1.00 to 5.00 D) and the average refractive astigmatism was 2.58 D (range, 0.00 to 5.00 D). The average postoperative spherical equivalent refraction was -0.32 D. CONCLUSIONS:
|
Authors | S C Belmont, D R Lazzaro, J W Muller, R C Troutman |
Journal | Journal of refractive surgery (Thorofare, N.J. : 1995)
(J Refract Surg)
1995 Nov-Dec
Vol. 11
Issue 6
Pg. 472-6
ISSN: 1081-597X [Print] United States |
PMID | 8624832
(Publication Type: Comparative Study, Journal Article)
|
Topics |
- Astigmatism
(surgery)
- Cornea
(pathology, surgery)
- Eyeglasses
- Humans
- Keratoplasty, Penetrating
- Postoperative Complications
- Refraction, Ocular
- Reoperation
- Television
- Visual Acuity
|