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At least 217 records · Page 12Linked to original sources
PubMed1981

Epikeratophakia: the surgical correction of aphakia. III. Preliminary results of a prospective clinical trial.

Epikeratophakia is a newly developed, investigational form of refractive corneal surgery for the correction of aphakic vision. The procedure involves the removal of the corneal epithelium from the recipient eye and the suturing of a prelathed lamellar donor corneal graft onto the surface of the recipient cornea. We initiated a prospective clinical trial of epikeratophakia in comparison with keratomileusis; however, only 14 patients were randomized between the two procedures, after which the protocol was modified to eliminate the keratomileusis procedure. subsequently, all patients who entered into the study underwent epikeratophakia. The limited comparative study showed that epikeratophakia was at least as effective as keratomileusis in terms of visual potential and visual recovery. The major problem encountered was undercorrection, which was largely eliminated by the use of donor tissue larger in diamter than the recipient bed. Three months postoperatively, five of seven patients undergoing epikeratophakia had 20/50 or better visual acuity with spectacle overcorrection.

Adolescent↗
PubMed1985

Intraocular pressure and the corneal endothelium after neodymium-YAG laser posterior capsulotomy. Relative effects of aphakia and pseudophakia.

We studied intraocular pressure (IOP) changes and specular microscopic findings in 118 consecutive neodymium-YAG laser posterior capsulotomy procedures; 37 cases were aphakic, and 81 were pseudophakic. There was a significantly greater rise in IOP one hour after Nd-YAG laser treatment in the aphakic group than in the pseudophakic group (8.2 mm Hg vs 3.5 mm Hg, respectively). At one week postoperatively, IOPs in the aphakic group were still significantly elevated over baseline levels (3.6 mm Hg), while those in the pseudophakic group had returned to baseline levels. Differences in treatment between the aphakic and pseudophakic groups in total number of pulses, average energy, and total energy did not explain the differences in IOP. No significant change in endothelial cell densities was seen between pretreatment measurements and those taken one week after Nd-YAG laser treatment.

Aphakia↗
PubMed1985

Aphakia versus pseudophakia. A clinico-pathological study.

Eighteen enucleated pseudophakic and 14 aphakic eyes were histopathologically described. An analysis was made of the histologic data in combination with clinical information. In conclusion, cataract extraction with subsequent implantation of an artificial lens seems to bear a higher risk than cataract extraction alone, notwithstanding-perhaps--better technical work during implant surgery. The presence of an intraocular lens may induce either fatal inflammations or complications necessitating other surgical interventions, which may contribute to a fatal outcome. However the proportion of enucleated eyes to the total number of lens implantations is almost negligible, it probably reflects the clinical complications.

Adult↗
PubMed1985

Vitreous fluorophotometry studies in aphakia.

Vitreous fluorophotometry was performed on 63 patients undergoing cataract extraction. Pre- and postoperative studies demonstrated that this procedure always induces alterations in the blood-aqueous barrier. A correlation was found between the degree of this alteration and the frequency of cystoid macular edema.

Aged↗
PubMed1998

[Etiology of contact lens failure in pediatric aphakia. Indications for intraocular lenses?].

UNLABELLED: Due to the low rate of complications, lentectomy and contact lens fitting is the standard treatment for congenital cataract. However, contact lens fitting is not possible in all children. The authors report the main reasons for discontinuation of contact lenses in their patients. METHOD: In 134 consecutive lentectomies of 90 children, the underlying eye diseases and general diseases, the age at operation, compliance of parents and children, and social background were analyzed. RESULTS: Twenty of the 90 children had to discontinue contact lens wearing. Twelve of these children were operated on one eye and 8 on both eyes. Only 2 children showed signs of contact lens complications. In 2 children treatment was stopped because of the poor visual prognosis and in 10 children the parents discontinued contact lens treatment because of a severe handicap of the child (n = 2) or due to misunderstanding and parental noncompliance (n = 8). Six children refused contact lenses without obvious reasons. Among the latter, children 2-4 years of age were at the greatest risk. Children with additional systemic abnormalities frequently developed contact lens intolerance. CONCLUSION: In children with systemic abnormalities and in the case of parental communication and compliance problems, discontinuation of contact lenses has to be expected in up to 30% of cases. In these children and in children who object to contact lenses at the age of 2-4 years, intraocular lens implantation should be considered, especially in unilateral cataract, if successful contact lens treatment is not achievable within 8-12 weeks.

Aphakia, Postcataract↗