Cataract extraction with intraocular lens (IOL) implantation surgery may result in the remarked increase in the prevalence of age-related macular degeneration (AMD). Researches have shown that the postoperative retina is much more easily exposed to blue light, which can induce the retina to produce reactive oxygen species (ROS) and finally damage the retina. Therefore, cataract surgery should not be recommended at early stage; alternatively, to lower the incidence of AMD, blue-light filtering IOL may be implanted to avoid the ocular exposure to more blue light in the postoperative patients.
Cataract Extraction ; adverse effects ; Humans ; Lens Implantation, Intraocular ; adverse effects ; Light ; Macular Degeneration ; etiology

PURPOSE: This study was performed to assess efficiency and stability of astigmatic change by incision size after cataract surgery. METHODS: This work was designed as a retrospective, comparative, nonrandomized interventional study. A total of 121 cases of cataract surgery were reviewed in 98 patients performed by one surgeon at the Oregon Eye Institute in Eugene, OR, USA with 3-year follow-ups. All procedures were performed with the temporal approach of self-sealing incisions. The serial change in surgically induced astigmatisms were examined in all cases of three groups: Group A, cartridge injection of a foldable IOL through a 2.5 mm self-sealing incision; Group B, cartridge injection of a foldable IOL through a 3.0 mm self-sealing incision; Group C, cartridge injection of a foldable IOL through a 3.5 mm self-sealing incision. Keratometric data were obtained preoperatively, and 3 weeks, 3 months, 6 months, 9 months, 12 months, 24 months and 36 months postoperatively. Polar value analysis was performed to calculate the surgically induced astigmatism. RESULTS: The astigmatic change decreased over time in Group B (P<0.05). The other groups tended to remain in induced astigmatism. All groups showed anticlockwise torque at 3 weeks following surgery. Group B showed a decrease in deviation, but the other groups showed increases in their torque value at postoperative 12 months (P<0.05). CONCLUSIONS: The 3.0 mm incision size correlated with the least surgically induced astigmatism.
Retrospective Studies ; Phacoemulsification ; Lens Implantation, Intraocular ; Humans ; Cornea/*surgery ; Cataract Extraction/*adverse effects/*methods ; Astigmatism/*etiology

Cataract surgery is the commonest ophthalmic surgical procedure and a local anaesthetic technique is usually preferred but the provision of anaesthesia in terms of skills and resources varies worldwide. Intraconal and extraconal blocks using needles are commonly used. The techniques are generally safe but although rare, serious sight- and life-threatening complications have occurred following the inappropriate placement of needles. Sub-Tenon's block was introduced as a safe alternative to needle techniques but complications have arisen following this block as well. Currently, there is no absolutely safe ophthalmic regional block. It is essential that those who are involved in the care of these patients have a thorough knowledge of the techniques used. This review article outlines the relevant anatomy, commonly used techniques and their safe performance and perioperative care.
Cataract Extraction ; Humans ; Nerve Block ; adverse effects ; methods ; Ophthalmologic Surgical Procedures

PURPOSE: To compare the outcomes after phacoemulsification performed with the AquaLase(R) and phacoemulsification in MicroFlow(R) system, including surgically induced astigmatism (SIA), corneal endothelial cell damage and postoperative recovery of visual acuity. METHODS: The cataracts of Lens Opacities Classification System, version III (LOCS III) nuclear grade below 2 were subjected in this study. Nineteen eyes underwent cataract operation using AquaLase(R) (Alcon Laboratories, Fort Worth, Texas, U.S.A.). A control group (19 eyes) used the MicroFlow(R) system (Millenium, Stortz, U.S.A.) and was selected by matching age, sex, systemic disease, corneal astigmatism and corneal endothelial cell density. All the surgeries were performed by the same operator. SIA, corneal endothelial cell loss, visual acuity, and corneal thickness were evaluated postoperatively. RESULTS: SIA in the group using AquaLase(R) was less than that of the group using MicroFlow(R) system (P=0.022) at 2 months postoperatively. Evaluation of corneal endothelial cell loss, recovery of visual acuity and corneal thickness found no statistically significant differences between the two groups. CONCLUSIONS: Cataract surgery using AquaLase(R) induces less surgically induced astigmatism in mild to moderate cataracts.
Astigmatism/etiology ; Cataract Extraction/adverse effects/*methods/*standards ; Humans ; Phacoemulsification/adverse effects/*standards ; Prospective Studies ; Treatment Outcome

With the advent of modern surgical techniques, paediatric cataract has become much more manageable. Intraocular lens (IOL) implantation is the standard of care for patients over the age of 2 years. The use of IOL in young infants is still controversial. In addition, there are still unresolved issues, such as the minimum age at which IOL can be safely implanted, IOL power selection and IOL power calculation. The current trends in the management of the above challenges are discussed. Although numerous reports on the prevention and management of posterior capsule opacification have been published, there are ongoing intensive debates and research. Long-term postoperative complications like glaucoma and rhegmatogenous retinal detachment are problems that cannot be overemphasised and these issues are also reviewed.
Cataract ; congenital ; Cataract Extraction ; adverse effects ; methods ; Child ; Child, Preschool ; Humans ; Infant ; Infant, Newborn ; Lens Implantation, Intraocular ; adverse effects ; methods ; Lenses, Intraocular ; Postoperative Complications ; prevention & control ; Refraction, Ocular

We report a case of complicated cataract aggravated after taking herbal medication for atopic dermatitis. An 11-yr-old boy was referred for the evaluation of decreased visual acuity in both eyes for 2 months. Past history showed that he had been diagnosed with atopic dermatitis when he was 1 yr old. He had been treated only with herbal medication for a period of 8 months prior to visiting our clinic. He had his visual acuity checked in a local ophthalmic clinic one year before, and the visual acuity was 20/20 in both eyes at that time. When attending our clinic the ophthalmologic examination showed that his best corrected visual acuity was 20/200 in both eyes. Lenses of both eyes had severe posterior subcapsular and posterior capsular opacity. Phacoemulsification, posterior chamber intraocular lens implantation, and posterior continuous curvilinear capsulectomy were performed in both eyes. After 3 months postoperatively, the best corrected visual acuity was recovered to 20/20 in both eyes without any complication. Our case suggests that there may be a risk of aggravation of cataract or development of cataract after treatment with some unidentified herbal medication in a patient with atopic dermatitis.
Cataract/*chemically induced ; Cataract Extraction ; Child ; Dermatitis, Atopic/*drug therapy ; Drugs, Chinese Herbal/*adverse effects ; Humans ; Male ; Visual Acuity/drug effects

Descemet's membrane detachment (DMD) is an uncommon condition with a wide range of etiologies. More than likely, the most common cause is a localized detachment occurring after cataract surgery. We report three cases of Descemet's membrane detachment that occurred after uncomplicated phacoemulsification cataract surgeries. The first patient was managed without surgical intervention, the second patient was treated using an intracameral air injection, and the last patient was treated with an intracameral perfluoropropane (C3F8) gas injection. All three patients recovered their vision following the reattachment of Descemet's membrane. The three patients were treated according to the extent of the detachment.
Visual Acuity ; Middle Aged ; Male ; Humans ; Female ; Descemet Membrane/*pathology ; Corneal Diseases/*therapy ; Cataract Extraction/*adverse effects ; Aged

Anterior megalophthalmos (AM) is an uncommon developmental anomaly of the anterior segment of the eye with a constellation of findings that includes enlarged cornea, deep anterior chamber, posterior positioning of the iris and lens, iris stroma atrophy, hypoplasia of iris dilator, pupil displacement, large capsular bag, lens subluxation, prematurely cataract and the tendency to retinal detachment. AM, especially when symptoms are mild, is not an easy disease to diagnose. We present 3 AM cases that were misdiagnosed as congenital cataract with weak zonule and megalocornea. Intraocular lenses (IOLs) dislocated after standard cataract surgeries and subsequent surgery (replacing the dislocated IOLs with iris-claw intraocular lenses) achieved satisfactory outcome. Although rare, AM should be included in the differential diagnosis of enlarged cornea and we recommend implanting Artisan lens in AM patients.
Adult ; Aged ; Cataract Extraction ; adverse effects ; Diagnostic Errors ; Eye Abnormalities ; diagnosis ; Female ; Humans ; Lens Subluxation ; etiology ; Male ; Middle Aged

PURPOSE: To assess the risk factors for endothelial cell loss after phacoemulsification with implantation of intraocular lens according to anterior chamber depth (ACD). METHODS: This prospective study included 94 eyes of 94 patients undergoing phacoemulsification cataract surgery. To assess the risk factors for corneal endothelial cell loss, we examined seven variables at 1 day, 1 week, 6 weeks, and 12 weeks postoperatively in each ACD-stratified group. RESULTS: Multiple linear regression analysis showed that the only variable influencing the percentage decrease in corneal endothelial cell density throughout the postoperative follow-up period in the long ACD group (ACD III) was nucleosclerosis. The variables influencing the percentage decrease in corneal endothelial cell density in the short ACD group (ACD I) at one day and one week postoperatively were corneal incisional tunnel length and nucleosclerosis. CONCLUSIONS: Risk factors for endothelial cell loss after phaoemulsification were different according to ACD. Long corneal tunnel length can be one of the risk factors for endothelial cell loss in short ACD eyes.
Anterior Chamber/ultrasonography ; Cataract/ultrasonography ; Cataract Extraction/*methods ; Cornea/pathology/surgery ; Corneal Endothelial Cell Loss/*etiology ; Humans ; Lens Implantation, Intraocular ; Phacoemulsification/*adverse effects/methods ; Prospective Studies ; Risk Factors

OBJECTIVE: To evaluate the characteristics, safety and therapeutic effect of cataract phacoemulsification after vitreoretinal surgery. METHODS: We retrospectively reviewed 132 patients (132 eyes) which had phacoemulsification after vitreoretinal surgery between July 2001 and December 2004 in our hospital, among which 67 patients (50.75%) combined with silicon oil removal.We also analyzed the difficulties and complications of the surgery. RESULTS: Patients were followed up for 7-14 months.Three eyes with broken suspensory ligaments were implanted with one point transcleral fixed intraocular lens(iol).Corrected visual acuity improved in 123 patients (93.18%), no change in 6 patients (4.54%), and visual acuity loss in 3 patients (2.27%). CONCLUSION Cataract surgery is high difficult after the vitreoretinal surgery. Phacoemulsification can easily adjust and control intraocular pressure, simplify the operation,and reduce complications during and after the surgery. Silicon oil removal combined with cataract phacoemulsification is safe and economic.
Adolescent ; Adult ; Aged ; Cataract ; etiology ; Cataract Extraction ; methods ; Child ; Female ; Humans ; Male ; Middle Aged ; Phacoemulsification ; Retrospective Studies ; Vitreoretinal Surgery ; adverse effects ; Young Adult