Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Phacoemulsification”

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.

At least 523 records · Page 29Linked to original sources
PubMed2003

[Use of indocyaine green staining technique for phacoemulsification in white cataract].

OBJECTIVE: To evaluate the efficiency and safety of indocyaine green (ICG) staining technique using in white cataract phacoemulsification. METHODS: In a prospective clinical study, 105 eyes with white senile cataract were divided into two groups: capsular-staining group using ICG (n = 55) and noncapsular-staining group (n = 50). The time for performing the circular continuous capsulorrhexis (CCC), the number of radial tears of anterior capsule, the number of the rupture of capsular bag and the incidence of IOL in-the-bag fixation during the operation were recorded. We also measured the intraocular pressure and observed the changes of corneal endothelial cells, the anterior chamber flare and the keratic precipitation before surgery, 1 day and 3 months after surgery, respectively. The results of these two groups were compared. The quantitative results were analyzed with two-tailed student's t-test, while the qualitative results were analyzed with chi-square test. RESULTS: In operations performed with ICG staining technique, the CCC could be performed more quickly, no radial tears of the anterior capsule or rupture of capsular bag occurred and all IOL could be fixed in the bag. No statistically significant difference could be detected in the occurrence of these four aforementioned changes between these two groups. None of these patients had an elevation of intraocular pressure. The anterior chamber flare, the corneal endothelial cell density, the percentage of hexagonal cells and the corneal thickness showed no statistically significant difference between these two groups before and after surgery. CONCLUSION: Indocyaine green dye staining is a safe and useful technique in the white cataract phacoemulsification. We suggested to use ICG staining technique in the white cataract phacoemulsification.

Aged↗
PubMed2003

Comparison of retrobulbar anesthesia and intracameral anesthesia using preservative free bupivacaine hydrochloride 0.5% in phacoemulsification with posterior chamber intraocular lens implantation.

OBJECTIVE: To compare the retrobulbar anesthesia and intracameral anesthesia using preservative-free bupivacaine hydrochloride 0.5% in terms of effectiveness, complications and comfort to the patient during phacoemulsification with posterior chamber intraocular lens implantation. METHODS: This was a hospital based comparative study of two methods of anesthesia, conducted at LRBT Free Eye and Cancer Hospital, Lahore from January to July 2000. Study included 200 patients with uncomplicated age-related cataract, equally divided in two groups on simple random basis. Group A (100 patients) received the retrobulbar anesthesia and Group B (100 patients) received the intracameral anesthesia with bupivacaine hydrochloride 0.5% for phacoemulsification with posterior chamber intraocular lens implantation. Outcome measures like pain, visual acuity, intraocular pressure and anterior chamber reaction were compared. RESULTS: On day 1, 79% of the patients in group A and 82% patients in group B had unaided visual acuity ranging between 6/6-6/18. On day 7, this was 88% in group A and 89% group B. On day 1, 99% in group A and 98% in group B had <1+ cells in the anterior chamber while on day 7 this increased up to 100%. On day 1, 97% in group A and 98% group B had intraocular pressure less than 20 mmHg. On day 7, it increased up to 100% in both groups. 97% patients in group A and 96% patients in group B had painless surgery. Results were analysed using computer software SPSS version 10.0. Results showed no significant statistical difference between two groups in terms of pain, visual acuity, intraocular pressure, anterior chamber reaction and patient comfort. CONCLUSION: In the hands of expert surgeons and in selected patients, intracameral anesthesia with preservative-free bupivacaine hydrochloride 0.5% is a safe and effective technique of ocular anesthesia for phacoemulsification with posterior chamber intraocular lens implantation.

Aged↗
PubMed2004

[Disorders of the blood-aqueous barrier after phacoemulsification].

OBJECTIVE: To determine the status of blood-aqueous barrier after small incision phacoemulsification with implantation of foldable intraocular lens. METHODS: The blood-aqueous barrier status in 64 eyes of 60 patients who underwent cataract surgery was examined using a laser flare cell meter. The protein level of anterior chamber aqueous humor was evaluated by measurement of the flare value preoperatively and postoperatively. RESULTS: The mean preoperative flare intensity was (6.94 +/- 0.34) photon counts/ms, which increased to (26.27 +/- 1.37), (13.96 +/- 1.05), (9.07 +/- 0.43) and (7.16 +/- 0.27) photon counts/ms on days 1, 7, 30 and 90 after the surgery, respectively. Significantly statistical differences on flare values were found between preoperative data and those on days 1, 7 and 30 after surgery. The blood-aqueous barrier was recovered on day 90 postoperatively. The variables such as age, gender, eye (left/right) had no influence on the flare value. Patients with iris prolapse had a higher flare value at day 1 and day 7 after the surgery. CONCLUSIONS: Blood-aqueous barrier after phacoemulsification with implantation of intraocular lens can be measured quantitatively by the laser flare cell meter. The blood-aqueous barrier disorders can be recovered shortly after phacoemulsification.

Aged↗
PubMedDate not supplied

Phacoemulsification cataract extraction and intraocular lens implantation in patients with Behçet's disease.

BACKGROUND AND OBJECTIVE: To evaluate the outcomes of phacoemulsification cataract extraction and intraocular lens implantation in patients with Behçet's disease. PATIENTS AND METHODS: This prospective study was based on 40 eyes of 34 patients with Behçet's disease who underwent phacoemulsification cataract extraction and intraocular lens implantation between May 2000 and February 2003. Their postoperative ocular complications and visual outcomes were observed during a mean follow-up period of 18.35 +/- 6.17 months (range, 6 to 32 months). RESULTS: Postoperative visual acuity increased in 29 eyes (72.5%) and was 20/40 or better in 18 eyes (45%). It decreased in 7 eyes (17.5%), resulting in a visual acuity of 20/400 or worse. The most frequent postoperative complication was posterior capsular opacification, which developed in 15 eyes (37.5%). Other complications were posterior synechiae formation in 7 eyes (17.5%), severe inflammation in 5 eyes (12.5%), cystoid macular edema in 5 eyes (12.5%), epiretinal membrane in 3 eyes (7.5%), and optic atrophy in 2 eyes (5%). CONCLUSION: With appropriate preoperative and postoperative suppression of inflammation, phacoemulsification and intraocular lens implantation are safe procedures leading to visual improvement in patients with Behçet's disease without preexisting fundus lesions.

Adult↗
PubMed2004

[Patient's pain feeling and surgeon's comfort--ECCE versus phacoemulsification].

PURPOSE: To compare patient's pain and surgeon's comfort during ECCE performed under retrobulbar anesthesia and phacoemulsification under topical anesthesia. MATERIAL AND METHODS: 120 patients scheduled for planned routine cataract extraction were divided in 2 groups: group 1-60 eyes, ECCE under retrobulbar anesthesia and group II-60 eyes, phacoemulsification under topical anesthesia. Immediately after operation patients were asked, to answer questions about their feeling during surgery. Simultaneously, the surgeon filled up the questionnaire, concerning patients behavior during the entire procedure. RESULTS: Statistically significant higher level of pain was reported in group I (ECCE). The most painful moment of the procedure was retrobulbar injection. During surgery pain feeling in both groups was similar. Both types of anesthesia provided very good level of surgeon's comfort. The longer operation, the higher level of pain and lower surgeon's comfort were reported in both groups. CONCLUSIONS: Patients having ECCE performed under retrobulbar anesthesia reported more pain comparing to phacoemulsification under topical anesthesia. Both anesthesia methods provided high level of surgeon's comfort.

Aged↗
PubMed2004

[Phacoemulsification using burst mode].

OBJECTIVE: To observe the effect of burst mode combined with high vacuum on phacoemulsification. METHODS: Nine hundreds and fifty-four eyes (819 patients) were randomly divided into three groups (continue group, pulse group and burst group). Each group consisted of 318 eyes. A temporal clear corneal incision was performed in each group. Various phaco modes were used. In continue group, the vacuum was 160 mm Hg, max phaco power was 60%. In pulse group, vacuum was 160 mm Hg and the power was 60%. In burst group, vacuum was 250 - 300 mm Hg and the power was 60%. Actual phaco power, phaco time, visual acuity, corneal endothelial cell loss and other complications were recorded. RESULTS: The actual phaco power in these 3 groups was 25.36% +/- 6.65%, 19.54% +/- 3.50% and 6.27% +/- 1.27%, respectively. Phaco time in these 3 groups was (222 +/- 30), (186 +/- 41) and (36 +/- 6) seconds, respectively. In comparison of the power and time among these 3 groups, the difference between continue group and pulse or burst group was significant (P = 0.005 and 0.0001). Visual acuity was significant improved in all 3 groups postoperatively. The difference between the continue group and the pulse group was not significant. The difference between the continue group and burst group was statistically significant. There was no statistically significant difference in mean number of corneal endothelial cell between these 3 groups preoperatively. Endothelial cell loss postoperatively was lower in the pulse and burst groups than that in the continue group. The difference was significant between the continue group and pulse or burst group (P = 0.005 and 0.001). Serious corneal edema occurred more frequently in the continues group than that in the pulse and burst groups. CONCLUSION: High vacuum combined with pulse or burst phaco mode reduced phaco time and actual phaco power consumed during phacoemulsification, especially in the burst mode, which enhanced the effectiveness of phaco chop and reduced the loss of corneal endothelial cell and corneal edema. It is safe to use the burst phacoemulsification clinically.

Aged↗
PubMed2004

[Phacoemulsification--personal experience on my first 507 cases].

PURPOSE: The evaluation of the intra and post operative early complications of the phacoemulsification with posterior chamber artificial lens implant on my first 507 cases. METHODS: A retrospective study on 507 eyes operated by cataract through phacoemulsification technique at the Emergency Military Hospital from Cluj-Napoca during the 1st of May-30th of June 2002. The surgeries were performed by the same surgeon through a corneal or a scleral incision using rigid and foldable artificial lenses. The evaluation period lasted 2 months, the types and frequency of the intraoperative and early postoperative complications being analyzed. RESULTS: The intraoperative complications were represented by the posterior capsule's efraction in 17 cases (3.37%); zonular rupture in 3 cases (0.59%); the loss of the nucleus into vitreous 4 cases (0.79%); the luxation of the crystalline lens in the anterior chamber in 5 cases (0.99%); the hyphaema and iris trauma in 14 cases (2.76%); incomplete cortical clean-up in 9 cases (1.78%); the failed capsulorhexis in 7 cases (1.38%) and the conversion to ECCE in 8 cases (1.58%). The early postoperative complications met into the study were: the corneal edema in 34 cases (6.71%); raised IOP in 18 cases (3.55%); the retained lens material in 9 cases (1.78%); the late inflammatory reactions in 6 cases (1.18%); hypopyon in 3 cases (0.59%); endophthalmitis in 3 cases (0.59%); retinal detachment in 1 case (0.2%) and the anterior capsule fibrosis in 4 cases (0.79%). CONCLUSIONS: The phacoemulsification is a high security technique because of the small incision and the sharp accuracy. The complications correlate themselves with the surgeon experience and with some particularities of the cataract (the brunescent cataract at the old patient, the medium dilatation of the pupil, etc.).

Follow-Up Studies↗
PubMed2004

[Clinical observation of phacoemulsification and lens implantation in patients with diabetes mellilus].

PURPOSE: To investigate the clinical results of phacoemulsification and posterior chamber lens implantation in diabetic patients. METHODS: Thirty-six eyes of 36 consecutive patients with diabetic cataract who had cataract surgery with phacoemulsification and posterior chamber lens implantation were prospectively followed up. The outcomes were compared with 36 eyes of 36 senile cataract patients with the same surgery. RESULTS: The complications of anterior segments of diabetic cataract, such as corneal edema, anterior chamber flare and fibrinous exubates, iris posterior synechiae, and posterior capsule opaque, were significant higher than those of senile cataract at early stage after surgery. There was no significant difference for the last results between two groups by treatment. CONCLUSIONS: Phacoemulsification and posterior chamber lens implantation seem to have no influence on the prognosis of diabetic cataract when fasting venous plasma glucose was controlled under 8.33 mmol/L. Reducing movement of instruments in the anterior chamber and damage to endothelium and iris could effectively reduce the rate of complication. Intensive topical steroid and suitable dilating eye drops were effective therapeutic methods for the complications.

Aged↗
PubMed2004

The changes of quality of life in the patients after phacoemulsification with intraocular lens implantation.

PURPOSE: To investigate the improvement and maintenance of the quality of life in the patients after phacoemulsification with intraocular lens implantation. METHODS: The study population consisted of 116 patients receiving phacoemulsification with intraocular lens implantation. They were interviewed using the quality of life questionnaire, and the clinical outcomes were evaluated before surgery and at 1 week, 1 month, 3 months, 6 months after surgery respectively. RESULTS: Patients reported similar scores of quality of life and all the four subscales among 1-week , 1-month, 3-month and 6-month follow-up visit after surgery, all of which were higher than the scores before surgery. CONCLUSION: Patients receiving phacoemulsification reported rapid improvement in quality of life after surgery, and the quality of life scores were not changed significantly from 1 week to 6 months after surgery.

Aged↗
PubMed2004

[Intraocular pressure in early postoperative period after cataract phacoemulsification].

PURPOSE: The purpose of this study was to investigate the pattern of intraocular pressure (IOP) change after phacoemulsification and its bearing on timing of postoperative review. MATERIAL AND METHODS: 31 eyes of 31 consecutive patients having uneventful phacoemulsification were included in this study. The IOP was measured by Goldmann applanation tonometry preoperatively and 1-3 hours, 1 day and 1 week postoperatively. The relationship between these measurements' readings were examined. RESULTS: 31 patients completed the study. The IOP checked next day was significantly correlated with the IOP preoperatively. CONCLUSION: After phacoemulsification with OIL implantation the decrease in IOP was observed in first three postoperative hours in comparison with preoperative values and it was followed by an increase on the first postoperative day. It decreased again after a week reaching values lower than preoperatively. Only in few cases (10%) a transient intraocular hypertension (23-26 mmHg) appeared on the first postoperative day.

Aged↗
PubMed2004

[Phacoemulsification in patients with cataract and pseudoexfoliation syndrome--own experience].

The aim of the study was the assesment of effectivness of phacoemulsification procedure in patients with cataract and pseudoexfoliation syndrome. Analysed group consisted of 72 eyes (8 patients), age 53 - 93 years with PEX and 50 eyes (50 patients), age 49-82 without PEX. All cases have performed the phacoemulsification with implantation of artificial posterior chamber lens using small incision procedure. In more than 50% of patients marked postoperative improvement of visual acuity up to 0,6. Year after operation significant decrease of intrabulbar pressure was observed. We conclude that phacoemulsification in cataract treatment is an efficient and save procedure with improvement of patient's visual acuity and with low number of postoperative complications.

Aged↗
PubMed2004

[The effect of phacoemulsification combined silicone oil remove and intraocular lens implantation on the eyes with silicone oil temponade].

PURPOSE: To study the effect of phacoemulsification combined silicone oil remove and intraocular lens implantation on the eyes with silicone oil temponade. METHODS: Forty cases (41 eyes) performed phacoemulsification combined silicon oil remove and intraocular lens implantation were retrospectively studied and followed back for 2-18 months, analysis the recover of eyesight and complication of postoperation and during the operation. RESULTS: Except three cases had retina detachment after silicone oil remove, all others patients improved the eyesight in some degree. The main complication during the operation was the posterior capsule tear. The complication of postoperation was retinal detachment. CONCLUSION: It is an effective and safe way that the phacoemulsification combined silicone oil remove for eyes with silicone oil temponade.

Aged↗
PubMedDate not supplied

[A subjective evaluation of epibulbar and etrobulbar anesthesia in cataract phacoemulsification].

Described in the paper are comparative descriptions of the efficiency of epibulbar and retrobulbar anesthesia made through evaluating the sensation of pain experienced by patients in cataract phacoemulsification and IOL implantation. The patients (1046 subjects, aged 28 to 89) were shared between 2 groups; they received an identical premedication by midazolam, peroral administration, 3.75 mg in 1 h before surgery. Epibulbar anesthesia with 1% proximetacaine hydrochloride, administered via instillator, was used in Group 1 (524 patients). Analgesia with 2% lidocaine hydrochloride solution (injections, 1:1) was made in Group 2 (522 patients). The subjective pain sensations experienced by patients during subsequent surgical stages were evaluated by an international 6-point scale. The pain sensations were found to vary from 0 to 4 points (mean point value--2.25) in Group 1. The most severe pain was experienced by the patients during the introduction of the phacoemulsificator tip into the anterior chamber of the eye (mean pain value--1.75 points) as well as during IOL implantation (mean pain value--1.25). The instillator-based analgesia does not normally provoke any complications and is well tolerated by patients; it can be recommended for cataract phacoemulsification.

Adult↗
PubMed2005

[A clinical report on the use of burst mode phacoemulsification].

OBJECTIVE: To evaluate the clinical outcome of phacoemulsification by using burst mode phaco power. METHODS: A randomized prospective study of 178 consecutive cases (222 eyes) was conducted. The patients had similar stages of cataract and were matched sex and age. All cases received phacoemulsification by 1 surgeon and were randomly assigned to 1 of 3 groups (the burst mode group, the pulse mode group and the continuous mode group). The effective phaco time (EPT) and the actual power (AP) was recorded. The difference in accumulated energy (AECP = EPT x AP), visual acuity, corneal edema, and endothelial cell loss were compared among the three groups. RESULTS: The mean EPT of burst group was statistically shorter than those of the pulse group and the continuous group. The mean AECP of burst group was statistically lower than those of the pulse group and the continuous group. Corneal clarity on the first and third postoperative day of the burst group was better in comparison to those of the other two groups. The mean endothelial cell loss in burst group was significant less than that of two other groups 1 week after surgery. CONCLUSIONS: The use of burst mode phaco power reduces significantly the EPT and the amount of ultrasound energy. The decreased energy utilization has significant benefits including diminished injury to surrounding ocular structures, less corneal edema, endothelial cell loss and rapid visual rehabilitation. It is safe to use the burst mode of phacoemulsification and therefore it is advised to use this mode in clinical practice.

Adult↗
PubMed2004

[Phacoemulsification and pseudoexfoliative syndrome].

PURPOSE: To compare the results and the complications of cataract surgery by phacoemulsification in eyes with pseudoexfoliation syndrome (PEX) and without pseudoexfoliation syndrome. METHODS: A retrospective clinical study (January 2001 - January 2004; mean follow-up 21.5 months) of 116 cases divided in two groups: group A (55 eyes) with senile cataract and pseudoexfoliation syndrome and group B (61 eyes) with senile cataract but without pseudoexfoliation syndrome. The eyes were without another associated ophthalmological diseases and the phacoemulsifications were performed by the same surgeon. Intraoperative observations included anterior chamber depth, pupil size after maximal mydriasis, zonular dehiscence, capsule tear, vitreous loss and postoperatively: best corrected visual acuity, intraocular pressure (IOP), aqueous flare response and IOL stability were evaluated at 1 day, 1 week, 1 month and until 3 years. The Student-t test was used for statistical analyses. RESULTS: There were determined significant correlations between pupil size, anterior chamber depth and the rate of complications in the group A. The visual acuities were similar in both groups. IOP reduction was superior in the eyes with PEX as compared with control group, but without statistically significantly difference. In group A, there were a non-statistically significantly percentage of IOL dislocation as compared with group B. In the eyes with PEX, it is necessary to utilize IOLs with bigger optic size. CONCLUSIONS: Phacoemulsification represents a safe method in cataract surgery in eyes with pseudoexfoliation syndrome in the presence of careful surgical technique: maximal mydriasis, circular continuous curvilinear capsulorhexis, adequate hydrodissection. On the long run, the postoperative results were comparable between eyes with PEX and the control group (without PEX).

Cataract↗
PubMed2005

[Effect of viscoelastic substances on postoperative intraocular pressure in phacoemulsification].

The Influence of the Type of Viscoelastic Substances on the Level of Intraocular Pressure after Phacoemulsification The aim of study was to asses the influence of the type of viscoelastic substances on the level of intraocular pressure (IOP) after cataract surgery and intraocular lens (IOL) implantation. In the study group of 100 patients Viscoat was used at 32 operated eyes, Provisc at 14 eyes and Duovisc in 54 eyes during phacoemulsification and IOL implantation. IOP was measured before surgery, one day after surgery and one week after surgery. Mean IOP level 1. day postoperatively was 24.94 mmHg in the Viscoat group of eyes, 24.65 mmHg in the Provisc group and 21.09 mmHg in the Duovisc group. The type of viscoelastic substance used during the surgery significantly influenced the level of IOP in the first postoperative day. The level of IOP was significantly lower in the Duovisc group comparing to Viscoat and Provisc. The level of IOP did not differ significantly between the Viscoat and Provisc group. One week after surgery the level of IOP was not significantly different between all types of viscoelastic device. Duovisc was the most profitable viscoleastic substance in the point of view of the course of phacoemulsification, IOL implantation and postoperative level of IOP.

Aged↗
PubMed2005

[Phacoemulsification and the negative power of intraocluar lenses in extremely myopic eyes].

OBJECTIVE: To evaluate the clinical effects of phacoemulsification and the negative power of intraocluar lens implantation in patients with extreme myopia and cataract. METHODS: 89 patients (126 eyes) received phacoemulsification and a negative power intraocluar lens implantation. Preoperative axial length, postoperative visual acuity and refractive error were recorded. Intraoperative and postoperative complications were observed. The follow-up time is from 6 to 25 months. RESULTS: The mean preoperative axial length is 32.45 mm. Best corrected visual acuity achieved 0.2 or better in 106 eyes (84.1%) and 0.5 or better in 69 eyes (54.8%). Of the 126 eyes, 56.3% were within 1.00 diopter (D) of refractive error and 90.5% were within an error of 2.00 D. Only 1 eye has posterior capsule rupture. 28 eyes had binocular disturbances. 15 eyes developed posterior capsule opacification and 6 eyes were performed neodymium: YAG laser posterior capsulotomy. No retinal or choroidal detachment or pressure improvement was seen during the follow-up. CONCLUSION: It is safe and effective for extreme myopia with cataract to implant a negative power intraocular lens after phacoemulsification.

Adult↗
PubMedDate not supplied

[Determination of retention during phacoemulsification with AOL in patients with open-angle glaucoma].

Phacoemulsification is the most sparing technique of cataract removal in patients with open-angle glaucoma. The retention of intraocular fluid should be determined to choose a pathogenetically oriented antiglaucoma operation for uncompensated open-angle glaucoma (OAG). The study of the Schlemm's canal retrograde blood filling phenomenon may be a technique of the most informative value. The phenomenon was studied on 102 eyes (in 82 cases of glaucoma) during phacoemulsification, which indicated the high effectiveness and safety of the use of this intraoperative method. Its advantage is that manipulations are easy-to-use and accessible. This method is of particular value in treating patients with cataract concurrent with OAG, who are to undergo phacoemulsification with a one-stage pathogenetically oriented antiglaucoma operation.

Adult↗