Publication details
Denzitometrie oční čočky u pacientů s kataraktou, vztah ke zrakové ostrosti a význam pro fakoemulzifikaci
| Title in English | Lens densitometry in cataract patients, implication to visual functions and phacoemulsification |
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| Authors | |
| Year of publication | 2012 |
| Type | Appeared in Conference without Proceedings |
| MU Faculty or unit | |
| Citation | |
| Description | Cataract is a major cause of visual impairment in an elderly population with cataract extraction remaining the most commonly performed eye operation. The reliable assessment of cataract (grading) had been long time impossible due to the absence of suitable instruments. The introduction of Scheimpflug principle into ophthalmologic imaging has enabled to quantify the lens density objectively. The knowledge about lens density could help to enhance the ability to estimate the ultrasound power needed during the phacoemulsification. Pre-operative classification could lead to better organized, customized operative plan. The optimization in phaco-energy dissipated in patients lenses could potentially lead to better visual outcomes and lower traumatization of the eye. The aim of the study was to investigate the relationship between lens density in age-related cataract and best-corrected visual acuity (BCVA) and the impact of cataract grade on Phacodynamics (phaco-time and phaco-energy). 55 patients with age-related cataract were evaluated. The results show that higher cataract PNS grade is associated with lower visual acuity and longer phacoemulsification time. The Scheimpflug optical densitometry enables to predict phacodynamics and the most suitable phaco settings to minimize the disturbance of the eye during surgery. |