ABSTRACT
In this paper, we examine the 193 nm excimer laser's efficacy and safety in treating myopic astigmatism. The VISX Twenty/Twenty excimer laser uses aperture elements to effect astigmatic photorefractive keratectomy. In 70 patients with six months follow-up, the average postoperative sphere was -0.14 and the average postoperative cylinder was -0.54. Seventy-one percent of these patients had uncorrected visual acuity of 20/40 or better at six months. In 12 patients with one year follow-up, the average postoperative sphere was -0.05 and the average postoperative cylinder was -0.59. Eighty-three percent of these patients had uncorrected acuities of 20/40 or better; none had a clinically significant loss of best corrected acuity. This investigation demonstrates that the excimer laser can be used to treat myopic astigmatism successfully.
Subject(s)
Astigmatism/surgery , Cornea/surgery , Laser Therapy/instrumentation , Laser Therapy/methods , Myopia/surgery , Follow-Up Studies , Humans , Postoperative Complications , Prospective Studies , Visual AcuitySubject(s)
Cataract Extraction/methods , Cornea/surgery , Lenses, Intraocular , Humans , Laser TherapyABSTRACT
In a series of 50 patients undergoing secondary implantation of a Choyce-style anterior chamber lens, 43 (86%) had regained or improved their best corrected preoperative vision by the third postoperative month. Four eyes had intraoperative vitreous loss, one resulting in subchoroidal hemorrhage and another associated with CME. Of the four cases of CME, three had regained or improved their best corrected preoperative acuity by the eighteenth postoperative month.
Subject(s)
Lenses, Intraocular/methods , Vitreous Body , Adolescent , Adult , Aged , Astigmatism/complications , Cataract Extraction/methods , Edema/complications , Female , Glaucoma/complications , Hemorrhage/complications , Humans , Macula Lutea , Male , Middle Aged , Postoperative Complications , Retinal Diseases/complications , Time FactorsABSTRACT
Endothelial cell densities were measured following intracapsular cataract extraction and phacoemulsification in the same patients. Phacoemulsification caused 29 percent more endothelial cell loss than intracapsular cataract extraction (p less than .001). The degree of endothelial damage with phacoemulsification appeared to be age related and was minimal in the younger patients.
