The Effect of ND:YAG Laser Posterior Capsulotomy Size on Refraction, Intraocular Pressure, and Macular Thickness

Abstract

Purpose. The aim of this study is to examine the influence of capsulotomy size on, spherical equivalent (SE), intraocular pressure (IOP), and macular thickness. Materials and Methods. Sixty-eight patients were examined preoperatively and 1, 4, and 12 weeks after Nd:YAG capsulotomy. Patients were divided into two groups based on the postoperative capsulotomy size. Changes in SE, IOP, and macular thickness were compared between two groups. Results. We found a higher hyperopic shift in large capsulotomy group. In both groups 1 and 2, IOP increased 1 week postoperatively. Intraocular pressure rise in group 2 was higher than in group 1. Both groups had increased macular thickness at 1 week postoperatively. The degree of macular thickening was similar in group 1 and group 2. Comment. Patients who underwent a larger capsulotomy have a higher hyperopic shift and IOP elevation. Rise in macular thickness was similar in large and small capsulotomy groups.

Short-term effect of nd:yag laser capsulotomy on refraction, central macular thickness and retinal nerve fber layer thickness

“…They found that CMT thickness increased 1 week after treatment but 4 weeks after treatment CMT decreased to preoperative levels in both groups. (16) Ari et al who examined 30 patients according to the energy levels, they found significant increase in CMT in high energy group. (17) Another study from Turkey, Yılmaz et al studied about long term changes in macular thickness, they did not find significant change in CMT.…”

Optic coherence tomography measurement of choroidal and retinal thicknesses after uncomplicated YAG laser capsulotomy

“…In a study on the comparison of post-YAG capsulotomy size and macular thickness, it was stated that a rise in IOP could be related to a large capsulotomy but not a change in macular thickness (6) . Similarly, in a study performed by reviewing the applied force and complication, the authors (4) found that CMT change was significant in cases where >80 mj was applied, but insignificant when a force <80 mj was applied.…”

“…Moreover, retinal complications that may emerge later affect the choroid tissue. Various studies associated with anterior chamber and retinal changes in patients who have undergone YAG capsulotomy have been published (4)(5)(6) . However, to the best of our knowledge, there are no publications regarding choroi dal change.…”

Incidence of posterior capsule opacification following the implantation of a foldable hydrophilic acrylic intraocular lens: a 4 year follow-up study

“…Previous reports have shown that hydrophilic IOLs lead to at least twice the number of Nd:YAG laser treatments when compared with hydrophobic lenses (1,13,17,18) . Although Nd:YAG laser capsulotomy is the standard treatment for PCO and is generally found to be safe and effective, it is also expensive and not free of complications (1,11,20) , including a significant rate of morbidity from postoperative complications. The most common complication is intraocular pressure elevation, while other complications include cystoid macular edema, retinal hemorrhage or detachment, iritis, vitreous prolapse, corneal damage, vitritis, iris damage, pupillary blockage, hyphema, IOL subluxation, and localized exacerbation of endophthalmitis (21,22) .…”