1.Preliminary result of trans pars planar vitreo-lensectomy combined with intraocular lens insertion in patients with ocular injury
Thang Van Vo ; Hon Nhu Do ; Hai -- Hoang
Journal of Medical Research 2008;56(4):41-46
Introduction: Cataract and vitreous opacification caused by ocular injury results in significant visual loss. Objectives: to evaluate the initial outcome of patients with ocular blunt or penetrating trauma who underwent trans pars planar vitreo-lensectomy and posterior chamber intra ocular lens insertion. Comment on the indications and applications of surgical techniques. Subjects and method: In this prospective randomized study, a total of 30 patients (30 eyes) with blunt/penetrating ocular trauma were assessed using X-ray and ultrasound in the Trauma Department of National Institute of Ophthalmology, from December 2005 to August 2006. Results: 30 patients (28 men and 2 women) with an age range from 3 to 45 years. Penetrating injuries are more common than blunt ones. The cornea is the most common site of injury (73.3%). Conclusion: Intraocular lens were implanted at the time of trans pars planar vitreo-lensectomy can provide a reasonable restoration of visual acuity and binocular function.
Vitreo-lensectomy
;
Intraocular lens
2.Place artificial lens on eyes where the posterior capsule is absent.
Journal of Practical Medicine 2002;435(11):52-54
The study involved 57 patients (61 eyes), including 32 males and 25 females who underwent intra- or extra-capsular lens removal and who were candidates for artificial lens placement. The result showed that artificial lens can be placed by one of two ways: placed in anterior chamber or trans-scleral suture fixation of artificial lens for eyes where the posterior capsule is absent or ruptured. Postoperative outcomes are encouraging. At 6 months after operation, the vision is less than 0.1 in 24 eyes; between 0.1 to 0.4 in 32 eyes; more than 0.05 in 4 eyes and one eye have unmeasurable vision. At 3 months after operation, intraocular pressure is less than 25 mmHg in 28 eyes and more than 25 mmHg in 3 eyes.
Lens Implantation, Intraocular
;
eye
3.Primarily review of the implantation of artificial lens in the luxation and subluxation of the lens due to the acute uveitis
Journal of Medical and Pharmaceutical Information 2001;(11):45-48
17 cases of luxation and subluxation of the lens due to the acute uveitis received an operation for removal of lens and implantation of the artificial lens in the posterior chamber and fixation of it in the sclera during 1993-1997. The monitoring duration was 3 years. The results of anatomy and tolerance were good. The rate of patients with vision improvement after 3 years of operation was 100% in which 57.14% of patient had vision ability of 0.1-0.6. This depended mainly on the treatment of visual insufficiency after operation.
Lens Implantation, Intraocular
;
uveitis
4.Effect of Intraocular Lens Implantation on Electro retinogram.
Young Hoon PARK ; Han Mo KOO ; Sung Kun CHUNG
Journal of the Korean Ophthalmological Society 1999;40(5):1217-1222
Electroretinogram(ERG), widely used to diagnose and prognose the retinal dysfunctions, is known to be affected by the various testing conditions, such as the amount and color of the stimulating light, adaptation time and background light intensity. We have recorded the ERG in 39 cataract patients(50 eyes)without retinal abnormalities in order to evaluate the effect of intraocular lens(IOL)on the ERG and to compare clear-IOL inserted eye with colored-IOL inserted eye. The insulting effect of IOL material did not affect the results of the ERG. However the rod response in IOL inserted eye showed shortening in implicit time, which was probably due to the increase of inputting light by the removal of opaque lens. Additionally, there was no difference between the ERG of colored-IOL(yellow-tinted IOL)eyes and that of clear-IOL eyes. We found that ERG might be used in the IOL inserted eyes without modification of data values.
Cataract
;
Lens Implantation, Intraocular*
;
Lenses, Intraocular*
;
Retinaldehyde
5.Comparing Clinical Results after Intraocular Lens Implantation Surgery Using Three Other Aspheric Lenses.
Byung Hoon CHUNG ; Ji Won JUNG ; Hyung Keun LEE ; Kyoung Yul SEO ; Eung Kweon KIM ; Tae Im KIM
Journal of the Korean Ophthalmological Society 2015;56(4):541-547
PURPOSE: We compared the clinical results after implantation of the newly-developed aspheric intraocular lens iSert 250 NC60 (Hoya Corporation Ltd., Tokyo, Japan) with 2 other types of widely used intraocular lenses, AcrySof IQ SN60WF (Alcon Laboratories, INC., Fort Worth, TX, USA) and TECNIS 1-piece ZCB00 (AMO Inc., Santa Ana, CA, USA). METHODS: Seventy cataract eyes were implanted with 1 of 3 aspheric intraocular lenses (Hoya iSert 250 NC60, TECNIS 1-piece ZCB00 or AcrySof IQ SN60WF) by the same surgeon. Uncorrected vision, best corrected vision, spherical equivalent, higher order aberrations, and modulation transfer function were measured 1 and 3 months after the cataract surgery. RESULTS: Uncorrected vision and best corrected vision were not significantly different among the 3 groups; however, eyes implanted with iSert250 NC60 showed more hyperopic-shifted postoperative spherical equivalents than expected compared to the other 2 groups. Total ocular aberrations and internal optics aberrations were similar among the 3 groups while the root mean square of the corneal aberrations showed differences. Eyes implanted with iSert 250 NC60 showed superior results in modulation transfer function compared with the other 2 groups in a majority of spatial frequencies 3 months postoperatively. CONCLUSIONS: The newly developed aspheric intraocular lens iSert 250 NC60 showed clinically equal results compared with 2 other verified intraocular lenses AcrySof IQ SN60WF and TECNIS 1-piece ZCB00 in vision, higher-order aberrations, and modulation transfer functions.
Cataract
;
Lens Implantation, Intraocular*
;
Lenses, Intraocular
6.Study on phacoemulsification, posterior chamber intraocular lens implantation combinced trabeculectomy
Journal of Practical Medicine 2004;472(2):50-52
In the Central Institute of Ophtalmology from January to September 2003, 35 patients with glaucoma and cataract underwent a surgery for removing lense and replacing cristallina in combining with treating glaucoma. After follow-up of 10 days, 1 month, 3 months and 6 months, the results of crushing of cristalline and placing artificial lense, cristalline in combining with sclerotabeculectomy had regulated interral optic pressure in 100% of cases with a reducing level of 12mmHg. There was not any case of recurrent. Visual acuity was rehabilitated quickly and consisitently, 66.7% of cases reached an acuty of > 5/10.
Phacoemulsification
;
Lens Implantation, Intraocular
;
Trabeculectomy
7.Refractive changes after intraocular lens implantation in post-cataract extraction children in a Philippine Tertiary Hospital
Patricia E. Cabrera ; Roland Joseph D. Tan ; Andrea Kristina M. Pajarillo ; Marissa N. Valbuena
Acta Medica Philippina 2022;56(12):12-17
Objective:
To determine refractive changes in children post-cataract extraction and intraocular lens (IOL) implantation at a Philippine tertiary hospital.
Methods:
This is a retrospective cohort study involving patients aged 1 to 10 years in the Department of Ophthalmology of a Philippine tertiary hospital who underwent cataract extraction and IOL implantation between 2004 to 2013.
Results:
We included 55 eyes of 34 patients in the analysis. Thirty-eight eyes (69%) eyes underwent primary IOL implantation. The mean duration of follow-up was 3.5 ± 2.1 years. The median refractive changes were -2.00 (-2.50, -0.50) diopters (D) for the 1- to 3-year-old group, -1.25 (-1.50, -0.25) D for the 4- to 7-year-old group, and -1.00 (-1.63, -0.25) D for the 8- to 10-year-old group. Only the 1- to 3-year-old group had significant difference between the initial post-operative refraction and the latest follow-up refraction (p<0.001). For the primary implantation group, patients in the 1- to 3-year-old group had the highest median refractive change at -2.00 (-3.125, -1.00) D while patients in the 8- to 10-year-old group had the highest median refractive change at -2.12 (-2.56, -1.69) D in the secondary implantation group. Refractions of eyes with IOL-implanted and normal eyes showed a median difference of -1.00 (-0.25, -3.5) D.
Conclusion
The determination of the power of IOL implants in pediatric patients who underwent cataract extraction remains challenging despite availability of recommendations.
Lens Implantation, Intraocular
;
Child
;
Cataract
8.The Location of Scleral Incision for Decrease of corneal Astigmatism in Sutureless Cataract Surgery.
Journal of the Korean Ophthalmological Society 1997;38(11):1954-1959
We analysed postoperative corneal astigmatic changes to know that preoperative astigmatism was able to decreased according to the location of incision in sutureless cataract surgeries. We divided 70 patients, 81 eyes that scleral pocket incision, phacoemulsification, and posterior chamber intraocular lens implantation was performed into two groups. The one is the preoperative with-the-rule(WTR)astigmatism more than 1 diopter(D) with superior incision, and the other is the preoperative WTR less than 1D or against-the-rule (ATR) astigmatism with temporal incision. We followed up the corneal astigmatic chnges until six months postoperatively. According to the results of algebraic analysis, in the superior incision group, postoperative astigmatic changes showed WTR decrease of 0.43D immediately, which advanced toward ATR decrease of 0.41D immediately, which keep up ATR decrease and showed ATR decrease of 0.44D at 6 months. According to the results of vector analysis, surgical inducced corneal astigmatism was o.69D in superior incision group and 0.50D in temporal incision group at postoperative 1day. It was 0.98D in superior incision group and 0.57D in temporal incision group at postoperative 6 months. We could decrease preoperative corneal astigmatism with performing incision at the position of greater corneal curvature. Temporal incision group showed less surgical induced astigamatic changes than superior incision.
Astigmatism*
;
Cataract*
;
Humans
;
Lens Implantation, Intraocular
;
Phacoemulsification
9.Evaluation of the postoperative spherical refractive error in trans pars plana vitreo-lensectomy in combination with intraocular lens insertion among patients with ocular injury
Thang Van Ngo ; Hon Nhu Do ; Hai -- Hoang
Journal of Medical Research 2008;55(3):42-47
Background: The postoperative residual spherical equivalent (SE) refractive error of the posterior chamber intraocular lens insertion is the cause result in significant distant vision loss. Objective: The study evaluated residual SE refractive error of the patients having ocular trauma undergoing a trans pars plana vitreo-lensectomy and posterior chamber intraocular lens insertion, for recorrection of the preoperative IOL power calculated formula are also investigated. Subjects: 43 consecutive patients who underwent a trans pars plana vitreo-lensectomy and posterior chamber intraocular lens insertion in the sulcus, in the Trauma Department of National Institute of Ophthalmology, from December 2005 to June 2007. Method: This was a prospective cross-sectional study. Results: Among 43 patients, there were 39 men and 4 women, age ranged from 10 to 45 years. In the most cases, the residual spherical equivalent deviation was planned to achieve final mild myopia (mean -1.75 D by manifest refraction; -1.9 D by autorefractor measurements). The surgery could provide a best corrected visual acuity at over 0.2 (81.4%). Conclusions: Intraocular lens implantation at the time of trans pars plana vitreo-lensectomy could provide a reasonable restoration of visual acuity and binocular function. However, recorrection of the IOL power calculation was necessary in these cases.
Postoperative spherical refractive error
;
intraocular lens insertion
10.Phacoemulsification, posterior chamber intraocular lens implantation combined trabeculectomy
Journal of Medical Research 2005;34(2):75-80
40 patients (51 eyes, 17 males, 23 females) having cataract combined open or closure angle glaucoma have been operated by phaco technique, implant IOL and trabeculectomy. Average of age is 70.3, AV less than 1/10 in 40 eyes (78.4%). Pre-operative lOP is 29.57+- 5.05 mmHg. 41 eyes (80.4%) had angle closuse and 10 eyes (19.6%) had open angle glaucoma. 48 eyes (94.1 %) had advanced and severe glaucoma. Post operation, good bleb filtration in 94.12% and had no case of failure bleb. The anterior chamber well recupere in 92%. By 1 to 6 months after operation, AV is stable, with 67% had vision acuity more than 5/10. 100% IOP regulated. Most of complications present in angle closuse glaucoma at severe period with high IOP. There are no severe intra and post-operative complication.
Lens Implantation, Intraocular, Trabeculectomy, Glaucoma, Contact Lenses