[Cataract extraction in severe myopia].
Explore the source record for details and available documents.
Cataract Extraction↗
SEARCH · Search PubMed
Results for “CATARACT EXTRACTION”
Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
[CATARACT EXTRACTION IN GLAUCOMA PATIENTS].
Explore the source record for details and available documents.
Cataract Extraction↗
Cataract extraction by the intracapsular methods and by phacoemulsification: the results of surgeons in training.
The results of 63 phacoemulsifications performed by 14 resident ophthalmologists (surgeons in training) were compared to their first 112 intracapsular cataract procedures. Although the number of complications was greater in the eyes undergoing intracapsular operations, the final visual acuities obtained by either procedurewere similar: visual acuities in the range of 20/20 to 20/30 were found in 80.7% of intracapsular cataract operations and in 83.3% of phacoemulsification procedures. Visual acuities of 20/50 or better were found in 90.3% of intracapsular cataract extractions andin 88.8% of phacoemulsification procedures. Cylindric correction of higher power was required to correct astigmatism associated with intracapsular cataract surgery as compared to phacoemulsification. The results of irrigation-aspiration of soft or traumatic cataracts performed in 20 eyes with needle and syringe were compared to results of 19 eyes operated on by use of the Cavitron-Kelman irrigation-aspiration handpiece. The incidence of postoperative secondary membrane requiring discussion was similar for both procedures. The basis for setting up a successful program for resident training in phacoemulsification is discussed.
Cataract Extraction↗
[Lamelliform incision for opening the anterior chamber in cataract extraction].
A technique of opening the anterior chamber by a 1.0 to 1.5 mm large scleral lamella was developed in an attempt to reduce postoperative astigmatism after cataract surgery. In a series of 483 eyes in which cataract extraction was performed by six surgeons, this technique was compared with the usual corneoscleral incision. Experienced surgeons generally achieved lower or equal rates of postoperative astigmatism with the scleral lamella incision, whereas less experienced surgeons caused higher rates of astigmatism with the scleral lamella and lower ones with the corneoscleral incision. No differences were found between the two techniques as regards the directions of the axis of postoperative astigmatism.
Adult↗
Randomized study of the blood-aqueous barrier reaction after phacoemulsification and extracapsular cataract extraction.
PURPOSE: To compare the blood-aqueous barrier (BAB) breakdown after endocapsular phacoemulsification and extracapsular cataract extraction (ECCE). METHODS: Forty-two patients (64-82 years) enrolled for cataract surgery were randomly assigned to phacoemulsification (group I) or ECCE (group II). Patients with pseudoexfoliation syndrome, small pupils, glaucoma, uveitis, dark brown irides, diabetes, treatment with eye drops or anti-inflammatory drugs were excluded. In group I the patients were operated with continuous curvilinear capsulorhexis (CCC), phacoemulsification and implantation of a poly-(methyl methacrylate) (PMMA) intraocular lens (IOL) through a 5.2 mm self-sealing incision. In group II linear capsulotomy, nucleus expression and PMMA IOL implantation through a large incision (10-11 mm) were performed. The incision was sutured. Before surgery and three days and three months after surgery postoperative inflammation and BAB reaction were measured by laser flare photometry and anterior chamber fluorophotometry after intravenous administration of fluorescein. The BAB diffusion coefficient was calculated. Laser flare photometry was performed also after one and two years. RESULTS: According to fluorophotometry, ECCE induced significantly more postoperative BAB breakdown than did phacoemulsification at three days (p=0.00016) and three months (p=0.00829). Laser flare photometry showed more inflammation in the ECCE group than in the phacoemulsification group at three days postoperatively (p=0.00005). CONCLUSIONS: This study suggests that cataract surgery performed with a small, self-sealing incision, CCC and phacoemulsification induces a reduced surgical trauma with less BAB breakdown compared to ECCE using a large sutured incision, linear capsulotomy and nucleus expression.
Aged↗
[Indications and contraindications of the combined operation (fistulation and cataract extraction) in open- and closed-angle glaucoma (author's transl)].
The respective indications are briefly described for: a) trabeculectomy through a scleral flap, b) simple cataract extraction, c) combined operation of lens extraction and fistulation in open-angle glaucoma on the one hand and close-angle glaucoma on the other. The choice of operation is dictated by many considerations. The main considerations are as follows. A Lens extraction alone has no lasting effect on the pressure in open-angle glaucoma, but is a good operation against early closed-angle glaucoma. B. Any fistulising operation predisposes to cataract when performed on old patients whose lenses suffer from senile changes already before the operation. A fistulising operation predisposes more to cataract in close-angle as in open-angle glaucoma. C. Lens extraction removes the risk of post-operative "athalamia" and hence of post-operative malignant glaucoma. D. The combined operation avoids a second surgical intervention and reduces the risks of oedematous dystrophy of the cornea in elderly patients who already have before the operation definite signs of endothelial dystrophy. E. Combining the glaucoma and cataract operations although, having certain peculiar risks, gives in a high percentages of cases efficient and long-lasting fistulation and a satisfactory intracapsular lens extraction.
Cataract Extraction↗
Visual acuity following extracapsular cataract extraction in diabetes: a meta-analysis.
Although pre-operative retinopathy severity appears to be a major factor in determining the visual outcome of diabetic extracapsular cataract extraction, its precise relationship to post-operative visual acuity is ill defined. A meta-analysis was therefore carried out, and studies were included if pre-operative maculopathy and retinopathy status was sufficiently defined to permit discrimination of visual outcome between subgroups. Weighted mean proportions of eyes achieving a post-operative visual acuity > or = 6/12 were as follows: no retinopathy, 87%; non-proliferative retinopathy with no maculopathy, 80%; quiescent proliferative retinopathy with no maculopathy, 57%; non-proliferative retinopathy with maculopathy, 41%; quiescent proliferative retinopathy with maculopathy, 11%; active proliferative retinopathy, 0. Differences in visual outcome between groups were significant (chi 2 = 119.9, p < 0.0005), attributable mostly to the trend across groups (chi 2 for trend = 115.4, p < 0.0005). Logistic regression indicated that maculopathy was a more potent predictor of post-operative visual acuity < or = 6/12 (odds ratio 6.4, 95% CI 4.13-9.94, p < 0.0005) than quiescent proliferative retinopathy (odds ratio 3.33, 95% CI 2.04-5.42, p < 0.0005). The severity of retinopathy and maculopathy prior to cataract surgery in diabetics are the major determinants of post-operative visual acuity. Further study of the relationship between pre-operative retinopathy severity and the incidence of post-operative complications, progression of retinopathy and maculopathy is required to optimise the management of cataract in diabetes.
Cataract Extraction↗
Cost analysis of cataract surgery with intraocular lens implantation: a single blind randomised clinical trial comparing extracapsular cataract extraction and phacoemulsification.
A randomised single blinded clinical trial to compare the cost of cataract surgery between extracapsular cataract extraction (ECCE) and phacoemulsification (PEA) was conducted at Hospital Universiti Kebangsaan Malaysia (HUKM) between March and December 2000. A total of 60 patients were included in this study. The cost of a cataract surgery incurred by hospital, patients and households up to two months after discharge were included. The costs of training, loss of patients' income after discharge and intangible costs were excluded. Results showed that the average cost for one ECCE operation is RM1,664.46 (RM1,233.04-RM2,377.64) and for PEA is RM1,978.00 (RM1,557.87-RM3,334.50). During this short period of follow up, it can be concluded that ECCE is significantly cheaper than PEA by an average difference of RM 313.54 per patient (p < 0.001). Cost of equipment and low frequency of PEA technique done in HUKM were the two main reasons for the high unit cost of PEA as compared to ECCE.
Aged↗
Presumed ophthalmic herpes zoster after contralateral cataract extraction.
Herpes zoster ophthalmicus (HZO) may occur spontaneously, but can be precipitated by stress, trauma, debility or systemic illness. A case is here reported of Herpes zoster involving the contralateral eye, associated with a midline skin rash, following cataract extraction under local anaesthesia.
Aged↗
Small-incision manual extracapsular cataract extraction using deep-topical, nerve-block anesthesia.
BACKGROUND AND OBJECTIVE: To determine whether deep-topical anesthesia is suitable for small-incision manual extracapsular cataract extraction (ECCE). PATIENTS AND METHODS: Three hundred twenty-six eyes of 253 patients had small-incision manual ECCE under topical anesthesia with a 4% lidocaine-soaked sponge. The severity of the pain, eye movements, blepharospasm, and intraoperative complications were recorded. Patient and surgeon satisfaction levels were assessed. RESULTS: Operations on 323 eyes (99%) were completed with topical anesthesia. Intraoperatively, topical anesthesia was converted to peribulbar anesthesia in 3 eyes (0.9%) because of excessive eye movements. The cauterization of the scleral vessels and conjunctiva and the subconjunctival injection were the stages causing severe pain. The most frequent intraoperative complication was posterior capsule rupture in 6 eyes (1.8%). The satisfaction level was 95% for the patients and 90% for the surgeon. CONCLUSION: Deep-topical, nerve-block anesthesia provides anesthesia with sufficient quality for small-incision manual ECCE.
Adult↗
Monitoring for continuing endothelial cell loss with cataract extraction and intraocular lens implantation.
For a period of three years, more than 2,700 endothelial cell density measurements were performed in over 1,000 patients undergoing cataract extraction with and without intraocular lens implantation. We concluded the following from the data: (1) Significant cell loss occurred with all surgical procedures, averaging between 11.6% and 25.6%, depending on type of procedure and implant used; anterior chamber phacoemulsification without intraocular lens implantation caused the most cell loss. (2) Patients with Medallion suture implants produced by one of two manufacturers studied demonstrated statistically significant cell loss during the first (15.6% additional cells lost) and second (22.9% additional cells lost) postoperative years following the initial cell loss due to surgery. This evidence for continuing cell loss with the Medallion suture lens correlated with the clinical observation of an increasing incidence of late bullous keratopathy in these patients. (3) No other surgical procedure or implant type, including Choyce and Shearing implants and Medallion style lenses from another manufacturer, demonstrated any evidence of continuing endothelial cell loss following the initial loss due to surgery.
Cataract Extraction↗
No additive effect of tranexamic acid and naproxen on corneal deswelling. A study on oedema after uncomplicated intracapsular cataract extraction with anterior chamber lens implantation.
The influence of systemic antifibrinolytic and antiprostaglandin medication on post-operative central corneal thickness was studied. Thirty patients underwent uncomplicated intracapsular cataract extraction with implantation of anterior chamber lens. The patients received either tranexamic acid, naproxen or both. The post-operative oedema did not differ significantly between the three groups studied. Models for studying changes in central corneal thickness are discussed. A review of the influence of drugs on corneal thickness is presented.
Aged↗
Control of corneal astigmatism following cataract extraction by selective suture cutting.
We evaluated the ability of selective suture cutting to reduce postoperative corneal astigmatism in 75 eyes of 68 patients who underwent extracapsular cataract extraction with posterior chamber intraocular lens implantation. Keratometric and refractive measurements were obtained before and at selected intervals (3, 6, 10, 26, and 52 weeks) after surgery. The number of sutures cut during the sixth week after surgery was based on the degree of astigmatism (0.00 to 2.00 diopters (D), no sutures cut; 2.25 to 3.00 D, one suture cut; 3.25 to 4.00 D, two sutures cut; greater than or equal to 4.25 D, three sutures cut). Our analysis demonstrated the following: (1) a spontaneous reduction of 0.5 D in surgically induced astigmatism in eyes without suture cutting, (2) an additional reduction of 1.2 D in postoperative astigmatism for each suture cut, and (3) attainment of 75% to 93% of the total effect of suture cutting within four weeks. The final astigmatism one year after surgery had increased by a mean of 0.9 D, exhibited predominantly with-the-rule properties, and showed no significant difference among the four groups of patients. Vector analysis revealed that only small shifts in the axis of astigmatism occurred after suture cutting. A strong correlation between the keratometric and subjective refractive measurements during all postoperative examinations indicated that corneal astigmatism is primarily responsible for postoperative astigmatism.
Astigmatism↗
Topical NSAIDS to control pain in clear corneal cataract extraction.
This study was conducted to assess the additive efficacy of ophthalmic topical nonsteroidal anti-inflammatory drugs (NSAIDs) with topical anesthesia in the control of pain associated with clear corneal cataract extraction. The patients who received three days of preoperative topical NSAIDs had a statistically significant decrease in their level of discomfort. We have previously shown that three days of preoperative NSAIDs can reduce postoperative inflammation after cataract surgery. This study demonstrates that ophthalmic topical NSAIDs also decrease discomfort during surgery.
Administration, Topical↗
Extracapsular cataract extraction with posterior chamber lens implantation in Fuch's heterochromic cyclitis.
Twenty-two patients with Fuch's heterochromic cyclitis had a posterior chamber intraocular lens implanted after extracapsular cataract extraction. After a mean follow-up period of 2.5 years (range, 6 to 70 months) half the patients had a visual acuity of 1.0 or more. The results compare favourably with those in the general population.
Adolescent↗
The quantitative effect of Healon on early postoperative intraocular pressure after extracapsular cataract extraction with implantation of a posterior chamber lens.
In a prospective, randomized and masked study the quantitative effect of sodium hyaluronate (Healon) on early postoperative intraocular pressure after cataract surgery was evaluated. At the end of planned extracapsular cataract extraction with implantation of posterior chamber lens, 0.1 ml or 0.2 ml of Healon was injected into the anterior chamber. The intraocular pressure was measured preoperatively, 3-6 h and 24 h postoperatively. All patients received topical timolol at the end of surgery. The results were compared to eyes operated with identical techniques where Healon was aspirated at the end of surgery. Three to six hours postoperatively a significant drop in mean intraocular pressure from preoperative pressure occurred when Healon was aspirated, but no statistical differences in mean intraocular pressure appeared when 0.1 ml or 0.2 ml of Healon was injected. The frequencies of pressure rise above 30 mmHg show no differences among the groups. Twenty-four hours postoperatively a significant pressure elevation from mean preoperative pressure occurred when 0.1 ml or 0.2 ml Healon was injected compared to the group were Healon was aspirated at the end of surgery. Similar results are seen when pressure rise above 30 mmHg are concerned.
Adult↗
Surgical outcome after early intraocular pressure elevation following combined cataract extraction and trabeculectomy.
BACKGROUND AND OBJECTIVES: We report on the incidence and course of early postoperative intraocular pressure (IOP) elevation and related surgical outcome following combined manual extracapsular cataract extraction (ECCE), using a sclerocorneal tunnel incision and trabeculectomy. PATIENTS AND METHODS: The combined procedure was the initial surgery in each eye. Intraocular pressure was measured during the first 4 days, at 1 week, and thereafter following surgery. RESULTS: Of 38 eyes (38 consecutive adults), postoperative IOP elevation to > 25 mm Hg was found in 7 eyes (18.4%) during the first 3 postoperative days. The IOP was reduced to < or = 20 mm Hg without hypotensive medication in 3 of them within the first 3-7 postoperative days, and remained so after 7-16 months (mean, 10.3 +/- 4.9 months). Each of the other 4 eyes underwent argon-laser suture lysis 8-10 days after surgery due to unstable IOP which rose to > 30 mm Hg. Two weeks after the operation and thereafter, ie, after 8-22 months (mean, 12.8 +/- 6.4 months), each of these 4 eyes necessitated 1-4 (mean, 2.5 +/- 1.3) hypotensive medications. CONCLUSION: This study raises the possibility that in eyes with early IOP elevation, a delay in promoting aqueous outflow beyond a critical period during the first postoperative week might become a risk factor for full surgical success.
Aged↗
Vitrectomy for retained lens material after cataract extraction: the relationship between histopathologic findings and the time of vitreous surgery.
PURPOSE: To report the histopathologic features of vitreous specimens obtained after vitrectomy for retained lens material and to correlate these findings with the time after cataract surgery at which vitreous surgery was performed. DESIGN: Observational case series. PARTICIPANTS: All 135 patients who had vitreous specimens submitted to the pathology laboratory after vitreous surgery for retained lens material after elective senile cataract surgery. METHODS: A review of histopathologic reports of 135 consecutive vitreous specimens that were obtained during vitreous surgery for retained lens material after surgery for senile cataract. MAIN OUTCOME MEASURES: Identification of lens material, macrophages, phacolytic cells, and giant cells in the vitrectomy specimens. RESULTS: Lens material was observed in 100% of cases. Macrophages without ingested lens material were present in 48% (65 of 135), phacolytic cells in 24% (32 of 135), and a mixture of neutrophils and multinucleated giant cells in 8% (11 of 135). No cells were discovered in eyes in which vitrectomy was performed within 3 days of cataract extraction. The percentages of eyes with macrophages increased from 35% when vitrectomy was performed 4 to 7 days after cataract surgery to 80% when this time interval was 61 to 90 days. CONCLUSION: Lens-induced inflammatory reaction seems to increase with time that retained lens material remains in the eye.
Adult↗