Keratometric and refractive results of pediatric epikeratophakia.
Keratometric and refractive results of pediatric epikeratophakia showed that patients under 1 year of age had steeper corneas preoperatively and required more correction, as estimated by the Sanders-Retzlaff-Kraff regression formula. The average spherical equivalent of refractive error six months postoperatively was +6.92 +/- 4.67 diopters in patients under 1 year, and -0.72 +/- 4.22 D in patients over 1 year. Three of 14 younger patients and 35 of 54 older patients were within 3 D of emmetropia. Since March 1982, significant undercorrection has occurred only in patients 6 months old or younger. Younger children achieved an average of 46% of the predicted change in corneal curvature, while older children achieved 85%. Also, the Sanders-Retzlaff-Kraff formula may be inaccurate in estimating powers for younger children. Therefore, we recommend at this time that epikeratophakia be used as a secondary procedure in neonates with congenital cataracts.
D000367:Age Factors; D000550:Amblyopia / Q000628:therapy; D001036:Aphakia, Postcataract / Q000601:surgery*; D002386:Cataract / Q000151:congenital / Q000209:etiology; D002387:Cataract Extraction; D002675:Child, Preschool; D003261:Contact Lenses; D003315:Cornea / Q000473:pathology; D016039:Corneal Transplantation; D005131:Eye Injuries / Q000150:complications; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D011183:Postoperative Complications; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000209:etiology* / Q000503:physiopathology; D012189:Retrospective Studies