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At least 253 records · Page 14Linked to original sources
PubMed1985

Progressive hyperopia with long-term follow-up of radial keratotomy.

A number of studies have documented the reasonable efficacy and safety of radial keratotomy, but most were based upon results obtained one year or less after surgery. This study reviewed 109 consecutive radial keratotomy procedures performed on 79 patients between Nov 10, 1979, and Jan 31, 1981. In addition to a number of earlier postoperative visits, 81 eyes in 55 patients (74.3%) were examined between eight and 18 months postoperatively (a "one-year visit") and again between 31 and 57 months postoperatively (a "four-year visit"). Patients had uncorrected visual acuity determination, cycloplegic refractions with best-corrected visual acuity measurements, and keratometry. Of the 81 eyes, 17 (21.0%) became more myopic between one and four years postoperatively; five (6.2%) remained the same; and 59 (72.8%) became more hyperopic. With a significant change defined as 1.0 diopter or more, two eyes (2.5%) became significantly more myopic at four years; 54 eyes (66.7%) remained within 1.0 D of their one-year spherical equivalent; and 25 (30.9%) became significantly more hyperopic. Changes in keratometry generally paralleled refraction changes.

Adult↗
PubMed2004

Impact of the line of sight on toric phakic intraocular lenses for hyperopia.

We present a hyperopic patient with a decentered line of sight in whom the residual refractive error after toric phakic intraocular lens (TP IOL) implantation was improved by displacement and individualized treatment. A 35-year-old woman presented with asthenopic complaints 2 months after bilateral TP IOL implantation and IOL rotation 4 weeks later. Examination revealed the line of sight to be nasally and inferiorly decentered in relation to the center of the pupil. A more nasal reenclavation of the TP IOL decreased the coma, and the uncorrected visual acuity was 20/20. We conclude that line of sight should be measured before TP IOL implantation, especially in hyperopic eyes.

Adult↗
PubMed2005

Excimer laser photorefractive keratectomy for hyperopia: 7.5-year follow-up.

PURPOSE: To report the results of a long-term prospective study to evaluate refractive stability and safety of hyperopic photorefractive keratectomy (H-PRK). SETTING: Department of Ophthalmology, St. Thomas' Hospital, London, United Kingdom. METHODS: Twenty-one patients (49%) (40 eyes) of cohort of 43 patients who participated in 1 of the first clinical trials of H-PRK were assessed at a mean follow-up of 90.7 months (range 62 to 106 months). The H-PRK was performed using a Summit Technology Apex Plus Excimer laser (Summit Technology, Inc.). The mean preoperative spherical equivalent refraction (SEQ) was +4.70 diopters (D) (range +2.00 to +7.50 D). Patients were allocated to 1 of 4 treatment groups based on their preoperative refraction and received 1 of the following spherical corrections: +1.50 D, +3.00 D, +4.50 D, or +6.00 D. RESULTS: At 7.5 years, the refractive correction remained stable with a mean difference in SEQ between 1 year and 7.5 years of +0.28 D. The mean manifest SEQ was +0.83 D (range +5.00 to -3.00 D). Sixty-seven percent of eyes having corrections of +1.50 D and +3.00 D were within +/-1.00 D of the predicted correction. Predictability was poorer with +4.50 D and +6.00 D corrections, with 40% of eyes within +/-1.00 D of that expected. An improvement in uncorrected near acuity was achieved in 35 eyes (87.5%), and 35 eyes (87.5%) showed an improvement in uncorrected distance acuity from preoperative levels. Best spectacle-corrected visual acuity (BSCVA) was unchanged or improved from preoperative values in 25 eyes (62.5%). Three eyes (8%) lost 2 lines of Snellen BSCVA, which in 2 cases was attributable to cataract formation. A peripheral ring of haze, 6.5 mm in diameter, appeared in most eyes. Its intensity was greatest at 6 months and then diminished with time. In 10 eyes (25%), remnants of the haze ring were evident at 7.5 years and subepithelial iron rings, 6.5 mm in diameter were evident in 26 eyes (70%). No patient complained of night-vision problems and no eye developed ectasia. CONCLUSIONS: In H-PRK, refractive stability achieved at 1 year was maintained up to 7.5 years with no evidence of hyperopic shift, diurnal fluctuation, or late regression. Peripheral corneal haze decreased with time but was still evident in a number of eyes at the last follow-up visit.

Adult↗
PubMed1986

The natural history and CT appearance of acquired hyperopia with choroidal folds.

Seven healthy adults with acquired hyperopic change in refractive error had choroidal folds in affected eyes. High resolution computerized tomographic scanning techniques used to obtain coronal, oblique coronal, and parasagittal reformations revealed flattening of the posterior globes and mild to moderate optic nerve enlargement. In 5 of 11 eyes, a space was noted between the optic nerve and its sheath, implying expansion of the sub-arachnoid perineural compartment. The clinical findings and natural history of this syndrome, based on an average follow-up of 4.5 years, are discussed.

Adult↗
PubMed1997

Clear corneal cataract surgery and the correction of myopia, hyperopia, and astigmatism.

PURPOSE: Advances in cataract removal using topical anesthesia through a clear corneal microincision have created a new opportunity to fully correct refractive errors at the time of cataract surgery. This study was undertaken to assess the effectiveness of keratolenticuloplasty (KLP), the simultaneous modification of the cornea at cataract removal to create emmetropia with lens implantation. METHODS: Data were analyzed for 690 consecutive cataract procedures performed between March 1993 and March 1995, with follow-up of 12 to 24 months. Each patient underwent cataract removal with topical anesthesia, clear corneal incision fashioned as an arcuate keratotomy to correct pre-existing astigmatism, intercapsular phacoemulsification, and microinjection of a single-piece elastic intraocular lens (IOL) into the capsular bag to correct spherical error. RESULTS: Preoperative best-corrected visual acuity was worse than 20/50 in all patients; 58% were myopic, 32% were hyperopic, and 57% had astigmatism of greater than 1 diopter (D). Postoperatively, spectacle independence was achieved with uncorrected visual acuity of 20/40 or better in 87% of eyes. The sphere was fully corrected in 78%, within 1 D in 17%, and within 2 D in 5%. No patients were overcorrected. The cylinder was fully corrected in 72%, within 1 D in 26%, and within 2 D in 2%. Of those with residual astigmatism, there was no significant postoperative shift in cylinder axis. There were no sight-threatening complications. All patients were able to resume normal unrestricted activities within 24 hours of undergoing the procedure. CONCLUSIONS: The KLP technique can correct spherical and astigmatic refractive errors, helping individuals become free of eyeglasses after clear corneal cataract surgery.

Adult↗