Introdução: Descrição de um caso clínico respeitante a queratopatia estromal induzida pelo aumento da pressão intraocular (PISK) após facoemulsificação num doente previamente submetido a implante de anel intra-estromal por ectasia pós cirurgia refrativa. Descrição do caso: Doente do sexo masculino de 53 anos com história de ectasia pós LASIK no olho direito, foi submetido a facoemulsificação e implante de lente...
PURPOSE: To evaluate the inter-device agreement between Placido -based topography (Topolyzer Vario, WaveLight, Alcon Laboratories, Inc., Ft Worth, Texas, USA) and rotational Scheimpflug tomography (Oculyzer II, WaveLight, Alcon Laboratories, Inc., Ft Worth, Texas, USA) for measuring anterior corneal surface parameters. METHODS: Fifty eyes from 50 subjects with no ocular disease were included in this study. The ...
To assess the correlations between preoperative Scheimpflug-based lens densitometry and effective phacoemulsification time (EPT) in age-related nuclear cataracts.; Purpose To assess the correlations between preoperative Scheimpflug-based lens densitometry and effective phacoemulsification time (EPT) in age-related nuclear cataracts. Design Retrospective consecutive study. Methods The setting was the Ophthalmolo...
[Excerpt] Currently, there are three key techniques to correct refractive defects in the cornea: LASIK, PRK, and SMILE. Laser in situ keratomileusis (LASIK) remains as the first choice for the correction of refractive errors in the majority of patients [1]. Clinical advantages of LASIK over surface ablation techniques are related to the maintenance of an intact healthy epithelium over the central cornea after t...
Measuring corneal biomechanical properties is still challenging. There are several clinical applications for biomechanical measurements, including the detection of mild or early forms of ectatic corneal diseases. This article reviews clinical applications for biomechanical measurements provided by the Corvis ST dynamic non contact tonometer.; info:eu-repo/semantics/publishedVersion
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PURPOSE: To present the Tomographic and Biomechanical Index (TBI), which combines Scheimpflugbased corneal tomography and biomechanics for enhancing ectasia detection. METHODS: Patients from different continents were retrospectively studied. The normal group included 1 eye randomly selected from 480 patients with normal corneas and the keratoconus group included 1 eye randomly selected from 204 patients with ke...
To evaluate the correlations between preoperative Scheimpflug-based lens densitometry metrics and phacodynamics.
To describe the Dysfunctional Lens Index (DLI) from ray-tracing aberrometry and to test its correlations with logMAR corrected distance visual acuity (CDVA) and lens grading based on the Lens Opacities Classification System III (LOCS III) and the Scheimpflug-based lens density.
EPSRC -Engineering and Physical Sciences Research Council(EP/H052046/1)