The Effect Of Nd:Yag Laser Posterior Capsulotomy On Visual Acuity, Intraocular Pressure And Central Macular Thickness
Published 2023 - 41st Congress of the ESCRS
Reference: PO0351 | DOI: 10.82333/4aaq-k655
Authors: Sanja Masnec* 1 , Miro Kalauz 1 , Tomislav Kuzman 1 , Ivan Škegro 1 , Iva Bešlić 1 , Dalibor Opačić 1
1Department of Ophthalmology,Clinical Hospital Center Zagreb, School of Medicine, University of Zagreb,Zagreb,Croatia
To analyze the effect of different Nd: YAG laser energy applied during posterior capsulotomy on visual acuity, intraocular pressure, and central macular thickness in patients with posterior capsule opacification.
University Hospital Center Zagreb, Department of Ophthalmology, Zagreb, Croatia
34 eyes with PCO were included in this prospective study between January and June 2022. Patients were classified into three groups on the basis of the total energy used during the Nd: YAG laser posterior capsulotomy (group 1: ≤ 50 mJ, group 2: 51-100 mJ, group 3: ≥ 101 mJ). Visual acuity, intraocular pressure, and central macular thickness were analyzed preoperatively and 1 week, 1 month and 3 months postoperatively. Patients with preoperative macular pathology and glaucoma, as well as those who have developed glaucoma, uveitis, retinal disease, ocular trauma or had surgery during follow-up period were excluded from the study. The differences in visual acuity, intraocular pressure, and central macular thickness were tested over time.
There was a statistically significant improvement in all groups in visual acuity compared to preoperative values. Differences in intraocular pressure and central macular thickness in group 1 were not statistically significant. In group 2 central macular thickness increased in all follow up terms (p <0.05), but between the 1st and 3rd postoperative month a significant reduction was evident. In group 3, after 1 week there was an increase in intraocular pressure (p <0.05), and after 3 months a significant drop (p <0.05). In all terms central macular thickness in the group 3 was increased (p <0.05), but showing significant reduction between 1st and 3rd month after treatment (p <0.05), approaching to preoperative values.
Nd:YAG laser posterior capsulotomy in patients with posterior capsule opacification leads to a significant improvement in visual acuity, but also to an increase in intraocular pressure and central macular thickness when using higher doses of total energy.