The present work evaluates mechanically the bone-implant attachment submitted or not to low-level laser therapy, with wavelength of 795 nm, in a continuous way, with power of 120 mW. The implant was placed in one of the shinbones of 24 mice, randomly distributed into two groups. The experimental group was submitted to six laser applications, divided into four points previously established, two lateral and two longitudinal, six times 8 J/cm2 with an interval of 2 days, totaling the dose of 48 J/cm2. The control group did not receive laser therapy. The interval between applications was 48 h and the irradiations began immediately after the end of the implant surgeries. The two groups were killed on the 14th day and a bone block of the area was removed where the implant was inserted. A torque machine was used to measure the torque needed for loosening the implants. A statistically significant difference was observed between the two groups. The experimental group presented larger difficulty for breaking up the implant interface with the bone block than the control group. It can be concluded that with the animal model and the protocol of irradiation present in this study, the laser therapy demonstrated capacity to increase the attachment bone implant.

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Purpose Optical coherence tomography (OCT) is an optical imaging technique that provides high resolution, cross‐sectional, in vivo, noninvasive measurements of the eye. The OCT is widely used in ophthalmology, especially in retina and neurophthalmology. For the study of anterior segment, Visante® OCT has so far been the most widespread, with the disadvantage of high cost and lacks posterior pole module.Currently one of the posterior pole tomographs, Cirrus HD‐OCT (Carl Zeiss Meditec Inc., Dublin, CA), has introduced an anterior segment high‐resolution module. Methods We describe the use of Cirrus HD‐OCT (Carl Zeiss Meditec Inc., Dublin, CA) and its application in Keratoconus, a prevalent pathology. We present several images of anterior segment Cirrus HD OCT. We can appreciate its use in the study, analysis and follow‐up of the keratoconus, as well as for the evaluation of the corneal status after surgical treatments. Results Cirrus HD allows the measurements of corneal thickness and show the thinning process,it shows the corneal ectasia,the presence and quantification of hydrops, defines the exact depth of the placement of intracorneal rings and the visualization of them, the tunnels of implantation, the condition of the epithelium in the main incision, the condition of the keratoplasty seeing the donor‐recipient interface, etc. Conclusion Cirrus HD allows the measurements of corneal thickness and show the thinning process,it shows the corneal ectasia,the presence and quantification of hydrops, defines the exact depth of the placement of intracorneal rings and the visualization of them, the tunnels of implantation, the condition of the epithelium in the main incision, the condition of the keratoplasty seeing the donor‐recipient interface, etc.

Seven members of the same family suffering from Groenow I granular dystrophy and associated congenital cataracts have been studied. Three patients had corneal dystrophy at various stages and three others had a fetal nuclear congenital cataract. A penetrating keratoplasty button was studied under light and electron microscopies. This association has not been described previously. However we must emphasize that there is no general validity for a correlation between granular dystrophy and congenital cataract.