Abstract | PURPOSE: SETTING: Ambulatory Clinic of the Department of Ophthalmology, Rhode Island Hospital, and Rhode Island Eye Institute, Providence, Rhode Island, USA. METHODS: This study comprised 8 patients meeting the following criteria: had previous PKP, had at least 5.0 diopters of residual keratometric astigmatism with all the sutures removed, were free from eye infection, and were at least 21 years old. All 8 patients had unilateral high astigmatism after PKP. Four eyes were randomly assigned to the control group of astigmatic keratectomy (AK) incisions without the collagen implants and 4 eyes to the experimental group of AK incisions with collagen implants. RESULTS: Best corrected visual acuity 1 day, 3 weeks, and 1, 2, and 6 months after AK showed decreased astigmatism in all the patients who had the relaxing incisions. The amount of astigmatism was lower in patients who received AK incisions with collagen implants (P < .28). Minimal adverse effects were noted. CONCLUSION:
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Authors | A Espaillat, K To, E M Perlman |
Journal | Journal of cataract and refractive surgery
(J Cataract Refract Surg)
Vol. 25
Issue 10
Pg. 1336-40
(Oct 1999)
ISSN: 0886-3350 [Print] United States |
PMID | 10511931
(Publication Type: Clinical Trial, Journal Article, Randomized Controlled Trial)
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Chemical References |
- Biocompatible Materials
- Collagen
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Topics |
- Adult
- Aged
- Aged, 80 and over
- Astigmatism
(etiology, physiopathology, surgery)
- Biocompatible Materials
- Collagen
- Cornea
(physiopathology, surgery)
- Female
- Humans
- Keratoplasty, Penetrating
(adverse effects)
- Male
- Prostheses and Implants
- Prosthesis Implantation
- Treatment Outcome
- Visual Acuity
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