AI Article Synopsis
- The study aimed to find the energy threshold required to fracture the haptic of different types of intraocular lenses (IOLs) using a neodymium:YAG laser.
- The research was conducted at the Ophthalmology Department of Dokuz Eylul University in Turkey and involved testing four types of haptic materials across several trials.
- The results showed that hydrophilic acrylic and poly(methyl methacrylate) haptics are more susceptible to laser fracturing compared to hydrophobic acrylic and polyvinylidene fluoride haptics, suggesting easier handling in clinical applications.
Article Abstract
Purpose: To determine the neodymium:YAG (Nd:YAG) laser energy threshold to fracture the haptic of various currently marketed intraocular lenses.
Setting: Dokuz Eylul University, Ophthalmology Department, Izmir, Turkey.
Methods: Four haptic materials-poly(methyl methacrylate) (PMMA), hydrophobic acrylic, hydrophilic acrylic, and polyvinylidene fluoride-were tested. The intraocular lenses (IOLs) were grouped according to haptic material. Each group comprised 9 IOLs. Beginning laser energy was 4 mJ. If no crack was noted, energy was increased by 0.5 mJ at every 20 shots and the procedure continued until a fracture was noted. If the fracture could not be developed despite reaching an energy level of 10 mJ, the procedure was terminated. Statistical analysis was performed to determine the differences within groups.
Results: Hydrophobic acrylic and polyvinylidene fluoride haptics required higher energy and more laser shots to create a fracture than hydrophilic acrylic and PMMA haptics.
Conclusions: Neodymium:YAG laser haptic fracturing can be a viable option to cut the fibrosed haptic before explanting any IOL. It was demonstrated in vitro that it is easier to fracture hydrophilic acrylic and PMMA haptics than hydrophobic acrylic and polyvinylidene fluoride haptics.
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| http://dx.doi.org/10.1016/j.jcrs.2006.01.046 | DOI Listing |
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