Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Focusing of Light in the Eye01:16

Focusing of Light in the Eye

4.2K
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
4.2K
Glaucoma: Overview01:25

Glaucoma: Overview

1.1K
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
1.1K
Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

8.2K
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
8.2K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Clinical evaluation of a new fully automated biometer integrating optical low-coherence reflectometry and Placido-disk topography.

Eye and vision (London, England)·2026
Same author

International consensuses and guidelines on clinical management of highly myopic cataracts: A two-round modified e-Delphi study by the Academy of Asia-Pacific Professors of Ophthalmology (AAPPO) and the Asia-Pacific Myopia Society (APMS).

Asia-Pacific journal of ophthalmology (Philadelphia, Pa.)·2026
Same author

Planning Adjustment of Toric Capsular Bag Intraocular Lens Axis to Minimise Refractive Cylinder Outcome-A Calculation Concept Based on Vergence Transformations.

Diagnostics (Basel, Switzerland)·2026
Same author

Functional Classification of a New IOL Into the Category of Partial Depth of Field: Enhanced IOLs According to the ESCRS Criteria.

Journal of refractive surgery (Thorofare, N.J. : 1995)·2026
Same author

Normative Data of Higher-Order Aberrations in Healthy Caucasian Eyes and Their Correlation with Age, Gender, and Spherical Equivalent.

Clinical ophthalmology (Auckland, N.Z.)·2026
Same author

Challenges in ophthalmic consultations and strategic communication.

BMJ open ophthalmology·2026
Same journal

Towards haplotypes of blood group genes: the impact of long-read sequencing in molecular immunohematology.

Annals of translational medicine·2026
Same journal

Development of pharmacological interventions for the treatment of sarcopenia.

Annals of translational medicine·2026
Same journal

Fertility preservation in young women with breast cancer: a narrative review of effectiveness, oncologic safety, and clinical practice implications.

Annals of translational medicine·2026
Same journal

Propofol-based total intravenous anesthesia and recurrence-free survival after hepatectomy-does it improve outcomes?

Annals of translational medicine·2026
Same journal

Is pulmonary hypertension still a contraindication for lung volume reduction?-a narrative review of contemporary evidence.

Annals of translational medicine·2026
Same journal

Calcium montmorillonite clay: a clinically oriented narrative review of emerging perioperative and supportive applications.

Annals of translational medicine·2026
See all related articles

Related Experiment Video

Updated: Nov 26, 2025

Scanning Light Scattering Profiler SLPS Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses
06:55

Scanning Light Scattering Profiler SLPS Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses

Published on: June 6, 2017

7.8K

Recent developments in intraocular lens power calculation methods-update 2020.

Giacomo Savini1, Leonardo Taroni2, Kenneth J Hoffer3,4

  • 1IRCCS - G.B. Bietti Foundation, Rome, Italy.

Annals of Translational Medicine
|December 14, 2020
PubMed
Summary
This summary is machine-generated.

New intraocular lens (IOL) formulas aim to improve cataract surgery outcomes. This review compares newer methods with traditional ones, focusing on accuracy in various eye lengths and astigmatism correction.

Keywords:
Lensesbiometrycataractintraocular

More Related Videos

Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application
11:49

Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application

Published on: March 8, 2019

12.9K
Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation
04:59

Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation

Published on: July 7, 2023

2.8K

Related Experiment Videos

Last Updated: Nov 26, 2025

Scanning Light Scattering Profiler SLPS Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses
06:55

Scanning Light Scattering Profiler SLPS Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses

Published on: June 6, 2017

7.8K
Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application
11:49

Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application

Published on: March 8, 2019

12.9K
Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation
04:59

Author Spotlight: Enhancing Visual Outcomes in Cataract Surgery: A Novel Technique to Prevent Posterior Capsular Opacification Through IOL Rotation

Published on: July 7, 2023

2.8K

Area of Science:

  • Ophthalmology
  • Biomedical Engineering
  • Optical Science

Background:

  • Traditional intraocular lens (IOL) power calculation formulas (Haigis, Hoffer Q, Holladay 1 & 2, SRK/T) have been standard for decades.
  • Recent advancements have introduced numerous new IOL formulas, aiming to enhance refractive prediction accuracy post-cataract surgery.

Purpose of the Study:

  • To provide an overview of newly developed IOL power calculation formulas.
  • To compare the performance of new and existing formulas, particularly in short and long eyes.
  • To discuss advancements in calculating posterior and total corneal astigmatism for toric IOLs.

Main Methods:

  • Review and comparison of recently introduced IOL power calculation formulas, including Barrett Universal II, EVO, Kane, Næser 2, Olsen, Panacea, Pearl DGS, RBF, T2, and VRF.
  • Analysis of published study results comparing formula performance.
  • Evaluation of segmented axial length measurements and their impact on accuracy.
  • Discussion of posterior and total corneal astigmatism (TCA) considerations for toric IOLs.

Main Results:

  • Newer IOL formulas show potential for improved accuracy in refractive prediction compared to older methods.
  • Segmented axial length measurement is highlighted as a promising technique for enhancing outcomes in eyes with extreme axial lengths.
  • The suitability of the standard group refractive index for converting optical path length to physical distance is questioned for specific applications.

Conclusions:

  • The landscape of IOL power calculation is evolving with new formulas offering improved precision.
  • Addressing challenges like segmented axial length and corneal astigmatism is crucial for optimizing surgical outcomes.
  • Further research and validation of novel formulas are necessary to establish their clinical utility.