Hydro-visco-implantation Technique for Wound-assisted Foldable Intraocular Lens Implantation During Microincision Cataract Surgery

The routine use of ophthalmic viscosurgical device (OVD) has revolutionized many anterior segment surgeries. All agents may be responsible for causing or exacerbating a transient, but occasionally significant, postoperative intraocular pressure (IOP) elevation, anterior chamber reaction. Removal of OVD from the anterior chamber is then very important. Otherwise administration of topical antiglaucomatous, steroid, or mydriatic drops may be needed in averting or controlling the increased IOP, inflammation, or synechiae [1,2]. Less use of OVD is preferable for both cost-effectiveness and easy removal from eye.Based on this knowledge we have described hydro-viscoimplantation technique that is including IOL implantation and passive removal of OVD.</p

Biocompatibility of Intraocular Lenses

The performance of an intraocular lens is determined by several factors such as the surgical technique, surgical complications, intraocular lens biomaterial and design, and host reaction to the lens. The factor indicating the biocompatibility of an intraocular lens is the behavior of inflammatory and lens epithelial cells. Hence, the biocompatibility of intraocular lens materials is assessed in terms of uveal biocompatibility, based on the inflammatory foreign-body reaction of the eye against the implant, and in terms of capsular biocompatibility, determined by the relationship of the intraocular lens with residual lens epithelial cells within the capsular bag. Insufficient biocompatibility of intraocular lens materials may result in different clinical entities such as anterior capsule opacification, posterior capsule opacification, and lens epithelial cell ongrowth. Intraocular lenses are increasingly implanted much earlier in life in cases such as refractive lens exchange or pediatric intraocular lens implantation after congenital cataract surgery, and these lenses are expected to exhibit maximum performance for many decades. The materials used in intraocular lens manufacture should, therefore, ensure long-term uveal and capsular biocompatibility. In this article, we review the currently available materials used in the manufacture of intraocular lenses, especially with regard to their uveal and capsular biocompatibility, and discuss efforts to improve the biocompatibility of intraocular lenses

Evaluation of Central Corneal Thickness with Ultrasound Pachymetry After Micro-Coaxial Cataract Surgery

Pur po se: To evaluate the changes in central corneal thickness (CCT) in patients with different values before cataract surgery. Ma te ri al and Met hod: 90 eyes of 70 patients who had undergone uneventful cataract surgery because of senile cataract were included in this prospective study. The CCT was measured by ultrasound pachymetry. The patients were evaluated in 4 groups according to preoperative CCT values (group 1: 450-500 μm, group 2: 501-550μm, group 3: 551-600μm, and group 4: 601-650μm). The CCT was measured preoperatively and at 1st, 2nd, 4th, and 8th weeks postoperatively. The chi-square test and one-way analysis of variance test were used for statistical analysis. Re sults: The increase in CCT was highest in group 1 determined as 71.3 μm. The increase in group 2 was 43.4, 35.1 in group 3, and 16.6 μm in group 4. The increase in CCT was significant in all groups at week 1 ( p<0.05). The increase in group 1 was statistically significant than in groups 3 and 4 (group 1 and group 3, p=0.025; group 1 and group 4, p<0.01). The increase in group 2 was also statistically significant than in group 4 (p=0.032). The CCT was decreased after the 2nd week. The recovery of CCT to preoperative values was determined at 8th week in group 1, 4th week in groups 2 and 3, and 2nd week in group 4. Dis cus si on: In thin corneas, the increase in central corneal thickness is more prominent and stabilization occurs in a longer time after cataract surgery. (Turk J Ophthalmol 2013; 43: 145-8

Evaluation of Posterior Vitreous Detachment after Microcoaxial Cataract Surgery

Objectives: To evaluate the posterior vitreous detachment (PVD) after microcoaxial cataract surgery by considering presence or absence of PVD in the phakic fellow eye. Materials and Methods: In this prospective study, we evaluated 40 eyes without PVD of 40 patients aged between 59 and 70 years who were bilateral phakic and were scheduled for surgery. The patients were assigned to 1 of 2 groups according to presence or absence of PVD in the phakic fellow eye. Group 1 consisted of 14 patients with spontaneous PVD in the phakic fellow-eye; group 2 consisted of 26 patients without spontaneous PVD in the phakic fellow eye. The groups were compared in terms of occurrence of PVD after cataract surgery. The PVD was evaluated before cataract surgery and at first and third months after surgery. Results: There was no statistical difference in age, sex, manifest refraction, axial length, mean phaco time, and mean effective phaco time between the groups (p>0.05). While new-onset PVD was detected in 8 eyes at first month and in 2 eyes at third month in group 1, it was in 6 eyes at first month and in 2 eyes at third month in group 2. The difference between the two groups was statistically significant (p=0.043 for first month; p=0.028 for third month). Conclusion: Even though size of incision has been reduced in cataract surgery, the occurrence of PVD is a potential complication. The presence of PVD in the phakic fellow eye should be considered for the occurrence of PVD due to surgery. (Turk J Ophthalmol 2014; 44: 288-92