PURPOSE The aim was to evaluate the agreement in the central corneal thickness (CCT), thinnest corneal thickness (TCT), anterior chamber depth (ACD), and mean simulated keratometry (simK) measurements using Pentacam, Galilei, and Sirius Scheimpflug systems in normal eyes. METHODS Anterior segment measurements were performed with Pentacam, Galilei, and Sirius devices in 32 healthy subjects. The right eye of each participant was selected. Measurements obtained with the 3 systems were compared using repeated-measures analysis of variance and Bonferroni multiple comparisons test. RESULTS Analysis of variance determined a significant difference in the anterior segment measurements of CCT, TCT, ACD, and simK between the 3 devices (P < 0.001). Pairwise comparisons of CCT and TCT measurements were significantly different except for the comparison between Pentacam and Sirius. All pairwise comparisons for ACD were statistically significant. The pairwise comparison results for simK values showed that the Galilei and Sirius systems demonstrated better agreement with each other than with Pentacam. CONCLUSIONS The results of this study suggest that the Pentacam, Galilei, and Sirius Scheimpflug systems should not be accepted as interchangeable for CCT, TCT, ACD, and simK in healthy subjects.

Comparison of central corneal thickness, thinnest corneal thickness, anterior chamber depth, and simulated keratometry using galilei, Pentacam, and Sirius devices.

Purpose The purpose of this study was the simulation of the implantation of intrastromal corneal-ring segments for patients with keratoconus. The aim of the study was the prediction of the corneal curvature recovery after this intervention. Methods Seven patients with keratoconus diagnosed and treated by implantation of intrastromal corneal-ring segments were enrolled in the study. The 3D geometry of the cornea of each patient was obtained from its specific topography and a hyperelastic model was assumed to characterize its mechanical behavior. To simulate the intervention, the intrastromal corneal-ring segments were modeled and placed at the same location at which they were placed in the surgery. The finite element method was then used to obtain a simulation of the deformation of the cornea after the ring segment insertion. Finally, the predicted curvature was compared with the real curvature after the intervention. Results The simulation of the ring segment insertion was validated comparing the curvature change with the data after the surgery. Results showed a flattening of the cornea which was in consonance with the real improvement of the corneal curvature. The mean difference obtained was of 0.74 mm using properties of healthy corneas. Conclusions For the first time, a patient-specific model of the cornea has been used to predict the outcomes of the surgery after the intrastromal corneal-ring segments implantation in real patients.

Patient-specific simulation of the intrastromal ring segment implantation in corneas with keratoconus

Background: The aim was to summarize and discuss the current knowledge about genetic factors influencing the reduction of central corneal thickness (CCT) in disorders affecting the eye, such as pri...

Genetic factors influencing the reduction of central corneal thickness in disorders affecting the eye.

This study sought to develop a diagnostic model with aberrometry and biomechanical variables for subclinical keratoconus. The design was a cross-sectional study. The topographic data were obtained with a rotating Scheimpflug camera (Pentacam HR), and biomechanical data were obtained with Corvis ST. The study included 81 eyes distributed in 61 healthy corneas and 20 subclinical keratoconus (SCKC), defined as eyes with suspicious topographic findings, normal slit-lamp examination, and a manifestation of keratoconus. Analyses of the topographic and biomechanical data were performed, and a classifying model of SCKC was elaborated. The model for the diagnosis of SCKC includes posterior coma to 90°, Ambrosio’s Relational Thickness in the horizontal profile (ARTh), and velocity when the air pulse is off (A2 velocity). The sensitivity was 89.5%, specificity 96.7%, accuracy 94.9%, and precision 89.5%. The area under the curve (AUC) of the receiver operating characteristic (ROC) curve for the model was 0.951. Diagnosis of subclinical keratoconus depends on the aberrometry variable posterior coma to 90° and the biomechanical variables A2 velocity and ARTh.

/pdf/diagnosis-of-subclinical-keratoconus-with-a-combined-model-ij1pmwdicu.pdf

Diagnosis of Subclinical Keratoconus with a Combined Model of Biomechanical and Topographic Parameters

Correlation of age, corneal curvature and spherical equivalent with central corneal thickness

Purpose:To map the thickness of the entire cornea using dual-Scheimpflug imaging and to evaluate the changes in the corneal thickness over the entire cornea at different stages of keratoconus.Methods:Corneal pachymetry was performed using the Galilei dual-Scheimpflug analyzer. The thinnest (TCT), ce

Mapping Corneal Thickness Using Dual-Scheimpflug Imaging at Different Stages of Keratoconus

While the idea that Aphrodite was specifically "caught" naked while bathing is sufficient to justify her nudity in the making of the statue, it shows us that the Greeks particularly disliked female nudity. In Cnidos, Medici and Capitoline Aphrodites, it shows that the goddess was caught while taking a bath due to the presence of the hydria vessel, and her slouched posture and her trying to cover her most private parts in addition to her draped outfits showed that she had a certain shyness. While the apparent nakedness of the strong male body was admirable, it was not easy to break a woman's nudity and with it a social taboo; therefore, it was considered inappropriate for women to appear naked. From this need for justification for nudity, we can deduce that the role of women in society was to present a clothed, modest appearance to reinforce her chastity. The Aphrodite of Cnidos was one of the important steps that started to destroy the determined female role. Despite the general nakedness of the Cnidos statue, there is no sign of the vulva. This fit with the idea that women were not sexually aggressive, even divine. Aphrodite, as the goddess of sexuality and love, represented the goddess who preserves her strength instead of covering her groin, and therefore a female audience began to appear to protect her own sexual power. In Aphrodite's case, she personifies love and sexuality; so she was responsible for representing what love and sexuality should look like, and her influence on women became more acutely felt and imitated. Apart from the message that Aphrodite gave to women during the Hellenistic Period, she also had a different appeal to the male world: naked and sensual. The fact that Aphrodite began to appear naked in public has turned gender roles upside down.

Social Impact on The Formation of The Hellenistic Period Nude Aphrodite Statues

Roma İmparatorluk Dönemi’ne ait olan Nike heykeli Prymnessos (Sülün) antik yerleşim alanında bulunmuş olup şuan Afyonkarahisar Müzesi’nde yer almaktadır. Prymnessos antik yerleşim alanı Afyonkarahisar Merkez ilçe Sülün köyünde Phrygler tarafından kurulmuş büyük kentlerdendir. Yunan Dönemi’nde özerk, Roma İmparatorluk Dönemi’nde yarı özerk konumuyla, imparator adına bronz kent sikkeleri bastırmıştır. Eser üzerinde herhangi bir kapsamlı çalışmanın yapılmamış olması bölgedeki inanç, kült ve adak yapısının anlaşılması ve doğru anlamda çözülmesi açısından eksiklik oluşturmaktadır. Heykel Prymnessos (Sülün) antik yerleşim yerinde yerel kutsal alanların varlığını göstermektedir. Bu doğrultuda müzede bulunmakta olan heykel ele alınmış ve tanıtılmaya çalışılmıştır. Nike heykelinin sadece gövde kısmı korunmuştur. Eserin karşılaştırma örneklerinin stilistik, tipolojik ve ikonografik bir değerlendirilmesi yapılmış olup, Geç Antoninler-Erken Severuslar Dönemi’ne tarihlendirilmesi uygun görülmektedir. Bu heykel nitelik açısından değerlendirildiğinde Dokimeon atölyesine ait olduğu görülmektedir. Roma İmparatorluk Dönemi’nde özellikle askeri gücün ve başarının büyük önemi nedeniyle, Nike imgeleri sıklıkla kullanılmıştır. Tanrıça’nın sahip olduğu bu imge görsel olarak da ön plana çıkmıştır. Roma İmparatorluk Dönemi’nde sıklıkla tanrıça bir kalkan üzerine başarılı askeri kampanyalar da gösterilmiştir. Nike heykelinin özellikle Roma İmparatorluk Dönemi’ndeki önemi üzerinden değerlendirildiğinde Prymnessos antik yerleşim alanında askeri bir başarı ya da zafer üzerine tanrıçanın böyle bir heykelinin yapıldığı ve bir alana yerleştirildiğini düşünmemiz gerekmektedir.

Roman Imperial Period Nike Statue from Prymnessos

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Barş Sönmez

Author Tools

Chat about Author

Papers

Mapping Corneal Thickness Using Dual-Scheimpflug Imaging at Different Stages of Keratoconus

Social Impact on The Formation of The Hellenistic Period Nude Aphrodite Statues

Roman Imperial Period Nike Statue from Prymnessos