We have developed a computerised video system for accurate quantification of lens opacities from Scheimpflug images. Using a modified Zeiss Scheimpflug camera and Macintosh computer, the system software can warn of improper exposure and can provide immediate results of cataract progression on individual patients. These results are obtained from a novel technique which automatically divides the lens into anatomical regions and computes regional densities in the standard optical density unit. Because of the system's speed, the operator can properly capture and analyse a cataract in seconds, compare results with past patient records and give feedback to the patient on the results of the analysis. The system provides the appropriate data integrity and formats for documenting and monitoring lens opacities. Such a system will be useful in longitudinal studies of cataracts (i.e. for natural history and anti-cataract drug trials).
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1038/eye.1993.186 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effect of anterior chamber depth on corneal endothelium following phacoemulsification among patients with different axial lengths.
Int Ophthalmol
January 2025
Ophthalmology Department, Faculty of Medicine - Suez Canal University Hospitals, 4.5 Kilo - Ring Road, Ismailia, 41522, Egypt.
Purpose: To assess the effect of anterior chamber depth on corneal endothelium using specular microscopy following uneventful phacoemulsification among cataract patients with different axial lengths.
Methods: The study was conducted in a quasi-experimental design including 300 eyes of 300 patients with grade three age-related nuclear cataract distributed equally based on their axial length into three equal groups. All eyes had grade three nuclear cataract.
Effect of metformin on the level of aqueous humor inflammatory cytokines in patients with cataract.
Sci Rep
January 2025
Department of Ophthalmology, Peking University Third Hospital, Beijing, China.
This study investigated the content of inflammatory cytokines in the aqueous humor (AH) of cataract patients with type 2 diabetes (T2DM) and explored the effect of metformin on the level of cytokines. AH was collected from patients undergoing phacoemulsification and intraocular lens implantation in Peking University Third Hospital. Levels of cytokines were measured by Cytometric Bead Assay (CBA) Flex Set.
View Article and Find Full Text PDFThe efficacy of non-depolarizing muscle relaxant as adjuvants to local anesthesia in peribulbar block during cataract surgery.
Sci Rep
January 2025
Department of Ophthalmology, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt.
Peribulbar anesthesia is mainly used for cataract surgery. Many studies had used atracurium and rocuronium as an additive to the local anesthetic (LA) drugs in eye surgery. The aim of this study is to evaluate the efficacy of adding atracurium versus rocuronium to a local anesthetic mixture, in providing an early onset of orbital akinesia and corneal anesthesia during cataract surgery.
View Article and Find Full Text PDFInsights from 1096 clinical cases: pioneering a universal grading system for vernal keratoconjunctivitis management.
Br J Ophthalmol
January 2025
C J Shah Cornea Services, Sankara Nethralaya, Chennai, Tamil Nadu, India.
Aim: To analyse the clinical and demographic profiles of patients with vernal keratoconjunctivitis (VKC) and propose a grading for VKC based on corneal status and symptom periodicity rather than disease activity.
Methods: Retrospective observational study from January 2015 to January 2020 in India. VKC grading was based on past/present clinical signs and frequency of symptoms rather than disease activity.
Estimating the volume of the vitrectomized space using axial length: a guideline.
Arq Bras Oftalmol
January 2025
Universidade Federal de Pernambuco, Recife, PE, Brazil.
Purpose: The volume of the vitreous chamber varies with the size of the eye. The space created in the vitreous cavity by a vitrectomy is called the vitrectomized space. The volume of the vitrectomized space is strongly correlated with the axial length of the eye.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!