Is Laser Assisted Capsulotomy better than standard CCC?

Objectives: To compare the safety and intraoperative difficulties of two capsulorhexis techniques for white intumescent cataract: Femtolaser-assisted capsulorhexis and manual capsulorhexis performed in 2-3 stages, with the Utrata forceps. Materials and methods: A prospective comparative study that included 28 eyes divided into 2 equal groups in which capsulorhexis was performed by using the 2 methods. In the first group, the capsulorhexis was executed by using LenSx Femtolaser. In the second group, an Utrata forceps was used to perform a manual 2-3 steps capsulorhexis as follows: a small 2-3 mm capsulorhexis was performed after the staining of the anterior capsule with Trypan Blue along with a good pressurization with viscoelastic substance. The liquefied cortex was aspirated, followed by the enlargement of the capsulorhexis. In some cases, the enlargement was made after IOL implantation. Results: In the Femtolaser group, the capsule was completely detached in 13 cases and only in one case, the capsule had a few bridges which detached easily, without endangering the capsulorhexis integrity. Its size was 4,9 mm in all cases. In the group in which capsulorhexis was performed with the Utrata forceps in 2-3 stages, this was complete, circular and relatively well centered in all cases, but the size varied between 4,5 and 5,5 mm. Conclusions: Femtosecond laser-assisted capsulorhexis was round, well centered and of a desired size of 4,9 mm. The manual capsulorhexis with the Utrata forceps depends on the surgeon's skill and experience and requires a good local anesthesia, the coloring of the anterior capsule with Tripan Blue, using a large quantity of cohesive viscoelastic substances and sometimes using micro incision forceps for helpful maneuvers. The size and centering of the capsulorhexis are not always identical with the intended ones.

IRIDEX MicroPulse P3: innovative cyclophotocoagulation.

Purpose: To present the new IRIDEX MicroPulse P3 (MP3) technology in patients with refractory glaucoma and our preliminary results at 1 week and 1 month postoperatively. Methods: IRIDEX MP3 laser cyclophotocoagulation was performed in 7 eyes of 7 patients under retrobulbar anaesthesia with lidocaine 2% in the operating room. Each eye received two treatments of 80-90s over the superior and inferior hemisphere, avoiding the temporal- and nasal-most clock hours. 810nm IRIDEX MP3 was set to 31,3% duty cycle (0,5ms treatment pulse followed by 1,1 ms of rest). Postoperative topical steroids were prescribed for 1 week. Results: Mean IOP decrease at 1 week was 60,3% and 33,4% at 1 month, with a mean topical hypotensive treatment reduction of 0,71 therapeutic agents. The procedure was safe in all cases and effective in 71% of the patients. Neovascular glaucoma patients registered high IOP levels 1 month postoperatively in spite of medical and MP3 laser treatment. BCVA remained unchanged after undertaking the laser procedure. No significant inflammation, discomfort, or pain was reported. There were no complications such as hypotony, phthisis bulbi, and macular edema. Conclusions: IRIDEX MP3 represents an innovation in cyclophotocoagulation. It is non-destructive, repeatable, non-invasive, with a high safety profile. A mean IOP decrease of 33,4% was registered at 1 month. Patient comfort and recovery are favorable. Long-term results will prove its efficacy in the future.

THE ADVANTAGES OF FEMTOSECOND LASER-ASSISTED CATARACT SURGERY.

PURPOSE: To present the advantages of performing femtosecond laser-assisted (Alcon-LenSx Inc.) cataract surgery. METHODS: Cataract surgery was performed with the LenSx femtosecond laser (Alcon-LenSx Inc.) in 50 eyes of 50 patients. The laser was programmed to perform a 4,9-4,5 mm capsulorhexis, a 2,3 mm main corneal incision, two 1,3 mm side-port incisions and either a hybrid-pattern or a cylinder-pattern fragmentation of the nucleus. The evaluated parameters were the capsulotomy, the corneal wounds and the nucleus fragmentation. Phacoemulsification of the nucleus and aspiration of the cortex were performed with the Alcon Centurion Vision System and monofocal, toric and multifocal IOLs were successfully implanted. RESULTS: A continuous, central, curvilinear capsulorhexis was performed in 48 cases, 96% (free-floating capsulotomy). In 2 cases, micro-adhesions were reported and detached with the Utrata forceps. Femtolaser capsulotomy resulted in a complete overlap of the anterior capsule over the IOL optics in all cases. Horizontal decentration was found in 2 cases, 4% and vertical decentration in 1 case, 2%. The main corneal incision was self-sealing in 49 cases, 98%. Sutures were used in 1 case, 2%. The hybrid pattern of nucleus fragmentation was used in 42 cases, 84% and the cylindrical pattern in 8 cases, 16%. The fragmentation was incomplete in one case of white cataract and in one case of traumatic cataract. CONCLUSIONS: The main advantages of femtolaser cataract surgery are standardized corneal incisions, perfectly centered, round capsulorhexis, and lens nucleus fragmentation even in eyes with hard cataracts. The laser precision is due to the real time OCT software programs, which cover the whole anterior segment, up to the posterior lens capsule.

FUCHS ENDOTHELIAL CORNEAL DYSTROPHY: IS FEMTOSECOND LASER-ASSISTED CATARACT SURGERY THE RIGHT APPROACH?

INTRODUCTION: Femtosecond Laser-assisted cataract surgery represents a modern technology that hopes to lower the risk of complications for patients suffering from Fuchs endothelial dystrophy by using a reduced level of energy that causes less damage to the endothelium, the main concern for patients with Fuchs endothelial dystrophy. The femtosecond laser performs 3 important steps in cataract surgery: corneal incisions, capsulorhexis and nucleus fragmentation without intraocular instrument manipulation. PURPOSE: The purpose of this study is to determine the efficiency of Femtosecond Laser-assisted cataract surgery in Fuchs endothelial dystrophy. MATERIAL AND METHODS: 5 patients with 6 eyes underwent cataract surgery assisted by Femtosecond Laser LensX at Laser Optisan Clinic. Corneal changes before and after surgery and cumulative dissipated energy (CDE) were analyzed. RESULTS: Before surgery, our patients presented BCVA between 0.16-0.4, Pachymetry between 450-590 Lm, endothelial cells between 789-2008 mm2. The medium cumulative dissipated energy (CDE) used was 4.58 seconds. After surgery, BCVA improved in all patients and none of them developed corneal decompensation so far. CONCLUSIONS: Femtosecond Laser-assisted cataract surgery represents a safe alternative in patients with Fuchs endothelial dystrophy and has a low risk of corneal decompensation.

PERSISTENT PUPILLARY MEMBRANE OR ACCESSORY IRIS MEMBRANE?.

Frequently, in literature and curent practice, accessory iris membrane (AIM) and persistant pupillary membrane (PPM) are confused. Both AIM and PPM are congenital iris anomalies in which fine or thick iris strands arrise form the collarette and obscure the pupil. AIM, which is also called iris duplication, closely resembles the normal iris tissue in color and thickness and presents a virtual second pseudopupil aperture in the centre while PPM even in its extreme forms presents as a translucent or opaque membranous structure that extends across the pupil and has no pseudopupil. Mydriatiscs, laser treatment or surgery is used to clear the visual axis and optimize visual development. Surgical intervention is reserved for large, dense AIMs and PPMs. Our patient, a 29 year old male, has come with bilateral dense AIM, bilateral compound hyperopic astigmatism, BCVA OD = 0.6, BCVA OS = 0.4, IOP OU = 17 mmHg. To improve the visual acuity of the patient we decided to do a bilateral membranectomy, restoring in this way transparency of the visual axis. After surgery, the visual acuity improved to BCVA OD= 0.8, BCVA OS=0.8.

[Progressive axial exophthalmy--case report]. / Exoftalmie axiala progresiva--caz clinic.

INTRODUCTION: It is being presented the clinical case of a 67 year old male patient who has been under clinical observation and treatment for 10 years. The diagnosis rests upon clinical methods, imaging techniques (ocular-orbital examination, computerized tomography and magnetic resonance imaging) as well as post-operative histopathology reports. RESULTS: The clinical diagnosis was supported by the progressive decrease in visual acuity, painful, irreducible, non-pulsating axial progressive exophthalmia, associated with disorders of the ocular motility initially at the level of the RE, followed by bilateral involvement. The RE ocular-orbital ultrasound and the MRI examination point out a homogenous retro bulbar formation that caudally compresses and exceeds the optic-nerve. The mass lesion from the right orbit was afterwards partially removed by neurosurgical excision. The general treatment was initiated with steroidal and non-steroidal anti-inflammatory drugs in repetitive cures, under protection of antibiotics and anti-secretory drugs, the response to treatment being unfavorable. In time, the exophthalmia increased progressively, fact that imposed right de-compressive orbitotomy, with the surgical ablation of the lateral orbital wall. About 1 year after the neurosurgical intervention the initial clinical symptoms insidiously reinstalled throughout 3 - 4 years. The ultrasound, completed by the cranium CT and MRI examinations have identified the bilateral presence of myositis. DEBATES: Regardless of all the therapeutical means applied in time, not only the medical treatment (the systemic corticotherapy), but also the surgical one (with palliative effect), the patient's evolution was unfavorable; the axial exophthalmia persists, it is painful and irreducible. The evolution is aggravated also by the fact that both orbits have been affected; the specialty literature mentions cases with frequent unilateral involvement. CONCLUSIONS: In the case presented the axial exophthalmia is irreversible; it is determined by an inflammatory pseudotumor of both orbits, that represents a chronic inflammatory, idiopathic disease, with unpredictable clinical evolution. The diagnosis is usually one of exclusion, the complementary imaging examinations being necessary to rule out other pathologies of the orbit.