Proposal for a new approach to corneal biomechanics: dynamic corneal topography.
نویسندگان
چکیده
PURPOSE To establish the literature basis that could support the idea that it would be possible to analyze changes at the anterior surface of the cornea induced by an air jet applied onto the eye. METHODS The PUBMED/MEDLINE literature basis regarding the following subjects was searched: videokeratography, high-speed photography, ocular response analyzer (ORA). The information concerning the goal of this paper was selected. RESULTS The literature showed data that support the idea of gathering 3 nowadays available technologies that could result in a new concept of 'dynamic corneal topography': the corneal topography, the air jet applied to histeresis measurement by the Ocular Response Analyzer and the high-speed photography technique used to study the tear film and the anterior surface of the cornea. CONCLUSION The literature basis supports the idea of gathering the existent technologies of corneal topography, the air jet of the corneal histeresis device and the high-speed photography to create a new concept in the analysis of the corneal surface: the dynamic corneal topography.
منابع مشابه
Corneal Ectasis among Wrestlers: Report of Two Cases
Report keratoconus in two patients with a long history of wrestling without any risk factor for corneal ectasia and reviewing the possible pathogenesis. To confirm suspicion of keratoconus, corneal topography was performed using scanning slit topography system and Orbscan. In two wrestlers with the complaint of visual loss in their eyes and IOP raising, corneal topography was performed and de...
متن کاملCorneal Collagen Crosslinking Articles
1. Results of Collagen Crosslinking for Keratoconus ................................. 2 2. Patient Selection ................................................................................. 14 3. Patient Subjective Visual Function after Crosslinking ............................ 22 4. Corneal Shape and Topography Changes ............................................. 27 5. Higher Order Aberratio...
متن کاملبررسی اثر قطره هوماتروپین 2% بر روی توپوگرافی قرنیه
ABSTRACT The purpose of this study was the evaluation of cycloplegic effect of homatropine 2% on central corneal curvature and power. 43 volunteers who participated in the study were examined. Thirty-nine of them (28 men and 11 women) which had normal eyes with visual acuity of 20/20 and a mean age of 29.6 ± 6.7 years were selected. Then corneal topography was performed on both eyes. After per...
متن کاملPrediction of Corneal Condition After Corneal Ring Implantation in Keratoconus Patients
Background: Keratoconus is a common complication among corneal defects. As a result of expeditious and extensive progress of medical science in recent decades, corneal ring implantation has turned into a successful surgical procedure to correct the vision of Keratoconus patients; however, selecting the right patient is essential in the success of the operation. The prediction of corneal conditi...
متن کاملDynamic curvature topography for evaluating the anterior corneal surface change with Corvis ST
BACKGROUND The measurement of dynamic parameters, such as the length of applanation and the amplitude of deformation, is significant for evaluating corneal properties. Most of the corneal properties (related to shape) including the anterior corneal curvature and the thickness of cornea can be easily measured using some existing techniques. However, they only provide the static or pseudo-dynamic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Arquivos brasileiros de oftalmologia
دوره 72 2 شماره
صفحات -
تاریخ انتشار 2009