1. Articles from Jorge L. Alió

    1-9 of 9
    1. Evaluation of acquired punctal stenosis using anterior segment optical coherence tomography

      Evaluation of acquired punctal stenosis using anterior segment optical coherence tomography

      Background/objectives: The aim of this article was to study the lower punctum parameters in patients with acquired punctal stenosis using spectral-domain anterior segment optical coherence tomography. Subjects/methods: This was a prospective nonrandomized study that included two groups. Group 1 was composed of 32 puncta from 32 subjects (11 males and 21 females, aged 40–62 years) with epiphora and clinically diagnosed punctal stenosis. Group 2 (control group) included 30 puncta from 30 normal subjects (10 males and 20 females, aged 43–63 years). Anterior segment optical coherence tomography was employed to evaluate lower punctum parameters in all subjects ...

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    2. Consistency of corneal sublayer thickness measurements using Fourier-domain optical coherence tomography after phacoemulsification

      Consistency of corneal sublayer thickness measurements using Fourier-domain optical coherence tomography after phacoemulsification

      To assess the reliability of corneal epithelial thickness (CET), nonepithelial central corneal thickness (NECCT), and central corneal thickness (CCT) measurements using Cirrus high-definition optical coherence tomography (HD-OCT) in patients who did and did not undergo cataract surgery. Forty patients who underwent uneventful phacoemulsification and 40 healthy participants were recruited to evaluate the intraobserver repeatability and interobserver reproducibility of CET, NECCT, and CCT measurements using Cirrus HD-OCT. To analyze repeatability, one examiner obtained 5 consecutive scans in each participant; for interobserver reproducibility, another examiner randomly obtained another scan. Within-subject standard deviation, coefficient of variation (CV), limits of agreement, and intraclass correlation ...

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    3. Anterior segment optical coherence tomography in evaluation of severe fungal keratitis infections treated by corneal crosslinking

      Anterior segment optical coherence tomography in evaluation of severe fungal keratitis infections treated by corneal crosslinking

      Purpose: Anterior segment optical coherence tomography (OCT) is a relevant diagnostic tool in the evaluation of corneal changes following corneal crosslinking (CXL) treatment in patients infected by a severe fungal corneal infection. Methods: Two patients with severe fungal keratitis that was unresponsive to medical treatment were treated with CXL. Corneal melting was present in all cases. Anterior segment OCT showed the preoperative depth and extension of the infiltrate and the modification during the follow-up. Results: Blockage of the melting was achieved in one patient and one patient developed a corneal perforation. Anterior segment OCT allowed control of the evolution of ...

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      Mentions: Jorge L. Alio
    4. Anterior segment OCT imaging after femtosecond laser cataract surgery

      Anterior segment OCT imaging after femtosecond laser cataract surgery

      PURPOSE: To report the anterior segment imaging characteristics after femtosecond laser assisted cataract surgery. METHODS: Cataract surgery was performed with the LenSx femtosecond laser (Alcon-LenSx Inc., Aliso Viejo, CA) in 40 eyes of 40 patients. The laser was programmed to perform a 4.5-mm capsulorhexis, a cross-pattern fragmentation of the nucleus, a 2.8-mm main incision, and a 1.0-mm side-port incision. The anterior segment was then analyzed using the Visante OCT anterior segment program (Zeiss-Meditec AG, Jena, Germany). RESULTS: The preoperatively set treatment parameters correlated well with the achieved results. For the capsulorhexis, the femtosecond laser cut was programmed ...

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    5. Precision of High Definition Spectral-Domain Optical Coherence Tomography for Measuring Central Corneal Thickness

      Precision of High Definition Spectral-Domain Optical Coherence Tomography for Measuring Central Corneal Thickness

      Purpose: To assess the reliability of central corneal thickness (CCT) measurements using Cirrus high-definition optical coherence tomography (HD-OCT) in healthy subjects and its accuracy compared with ultrasonic pachymetry. Methods: Seventy-seven consecutive subjects were recruited for evaluating repeatability, and agreement between two examiners. To analyze repeatability, one examiner measured 77 eyes four times in succession. To study agreement between two observers, a second independently-trained examiner obtained another CCT measurement. We also measured eyes in a subgroup of 20 patients using standard ultrasonic pachymetry. Within-subject standard deviation (Sw), coefficient of variation (CV), limits of agreement (LoA), and intraclass correlation coefficient (ICC) data ...

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    6. Retinal imaging after corneal inlay implantation

      Retinal imaging after corneal inlay implantation
      We report 2 cases of implantation with the Kamra corneal inlay to describe central and peripheral retinal visibility and the quality of optical coherence tomography (OCT) scans. Under pharmacological mydriasis, the central and peripheral retina was explored without disturbance by an experienced retinal ophthalmologist. Central color imaging was done without difficulty, and peripheral imaging was accurate despite a small bright shadow in every image. The quality of the OCT scans of the macular line, macular 3-dimensional cube, and macular radial protocols were 156.51, 77.49, and 84.35, respectively, in patient 1 and 106.66, 63.03, and 64 ...
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      Mentions: Jorge L. Alio
    7. Pachymetric measurements with a new Scheimpflug photography–based system: Intraobserver repeatability and agreement with optical coherence tomography pachymetry

      Pachymetric measurements with a new Scheimpflug photography–based system: Intraobserver repeatability and agreement with optical coherence tomography pachymetry
      Purpose: To evaluate the intraobserver repeatability of pachymetric measurements obtained with a new Scheimpflug photography–based system and the agreement of the measurements with those obtained by optical coherence tomography (OCT).Setting: Vissum Corporation, Alicante, Spain.Design: Evaluation of diagnostic technology.Methods: Corneal thickness was measured at different locations (center; 2.5 mm and 4.0 mm nasal, temporal, superior, and inferior) in 18 eyes of 18 patients with no ocular pathology or previous surgery with a Scheimpflug photography–based system (Sirius). Three consecutive measurements at each location were obtained with the system to evaluate intraobserver repeatability. Afterward, pachymetric measurements ...
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    8. Ciliary Sulcus Diameter and Two Anterior Chamber Parameters Measured by Optical Coherence Tomography and VHF Ultrasound

      PURPOSE To evaluate the relationship between two anterior chamber anatomical parameters, angle-to-angle and iris pigment end-to-iris pigment end distances, and sulcus-to-sulcus diameter. METHODS Twenty eyes without active ocular pathologies or previous ocular surgeries from 20 patients ranging in age from 23 to 51 years were included in this study. Mean spherical equivalent refraction ranged from +5.50 to –7.00 diopters. Angle-to-angle and iris pigment end-to-iris pigment end distances were measured in all cases three times consecutively using two technologies: optical coherence tomography (OCT) and very high-frequency ultrasonography. Sulcus-to-sulcus diameter was additionally obtained by ultrasonography. Correlation, linear regression, intrasession, and ...
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      Mentions: Jorge L. Alio
    9. Corneal incision quality: Microincision cataract surgery versus microcoaxial phacoemulsification

      Purpose: To use corneal optical coherence tomography (OCT) to evaluate the corneal incision quality in microincision cataract surgery (MICS) and microcoaxial phacoemulsification (microphaco).Setting: Vissum-Instituto Oftalmológico de Alicante, Alicante, Spain.Methods: Eyes with cataract grade II to IV were randomized into 2 groups for MICS or microphaco. Corneal incision quality was analyzed using corneal OCT on the first postoperative day, week, and month using a purpose-developed protocol and an objective model. Corneal OCT parameters were incision and corneal thickness, incision angle, epithelial and endothelial sealing, incision coaptation, and Descemet detachment. Visual, refractive, corneal topography, and aberrometric data were analyzed ...

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    1-9 of 9
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    1. (7 articles) Jorge L. Alio
    2. (4 articles) Carl Zeiss Meditec
    3. (2 articles) Zeiss Visante OCT
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    5. (1 articles) Miguel Hernandez University
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    Pachymetric measurements with a new Scheimpflug photography–based system: Intraobserver repeatability and agreement with optical coherence tomography pachymetry Retinal imaging after corneal inlay implantation Precision of High Definition Spectral-Domain Optical Coherence Tomography for Measuring Central Corneal Thickness Anterior segment OCT imaging after femtosecond laser cataract surgery Anterior segment optical coherence tomography in evaluation of severe fungal keratitis infections treated by corneal crosslinking Consistency of corneal sublayer thickness measurements using Fourier-domain optical coherence tomography after phacoemulsification Evaluation of acquired punctal stenosis using anterior segment optical coherence tomography Optical Coherence Tomography Angiography in Myopic Patients Quantification of retinal microvasculature and neurodegeneration changes in branch retinal vein occlusion after resolution of cystoid macular edema on optical coherence tomography angiography Machining head for a laser machining device Quantitative Comparison Of Microvascular Metrics On Three Optical Coherence Tomography Angiography Devices In Chorioretinal Disease Detection of and validation of shadows in intravascular images