Meridional Interactive Subjective Refraction Apparatus Problem Clinical refraction involves a set of optical and visual tests that can be difficult to.

Slides:

Advertisements

Similar presentations

Accommodative and Multifocal IOLs

Advertisements

In the name of god Clinical eye examination Hamid Fesharaki MD Eye department Isfahan University of medical sciences History & physical examination.

Training Presentation

Psychology 4051 Visual Functions.

Falls prevention. As you get older, so do your eyes This can affect your life in many ways.

Enabling the Visually Impaired Problem Many eye diseases lead to loss of central vision and consequential error in recognizing objects necessary for daily.

Introduction to Acuity. Acuity Agenda Introductions Student Experience Educator Experience – Test Assignments – Manual Score – Reports – Custom Tests.

Introduction to Refractive Error and Prescription Writing Walter Huang, OD Yuanpei University Department of Optometry.

Monovision for Presbyopia Insert name/ Practice name/ Logo here if desired.

Chapter 2: The Beginnings of Perception. Figure 2-1 p22.

What is vision Aristotle - vision is knowing what is where by looking.

Earth in Yellow Flower Presenter Name By PresenterMedia.comPresenterMedia.com By Sumitra Marda Optometrist, Ocularist, Low vision specialist, Sportvision.

Inherited eye conditions. Some eye problems can run in the family Refractive error –Myopia –Hyperopia –Astigmatism Strabismus Retinitis pigmentosa Colour.

Pinhole Cameras Converging & Diverging Lenses. Pinhole Image.

Clinical Optometry I Walter Huang, OD Yuanpei University Department of Optometry.

Product Design Sketching

Homework Set 5: Due Wednesday, March, 17 From Chapter 5: P2, P8, P10, P11, From Chapter 6: P1, P2, P6, PM2,

Theory of Retinoscopy.

Eyes and Vision [Name of Presenter] Doctor of Optometry.

Assessment and Management of Patients With Eye and Vision Disorders

By Kelsey Matthews. History  LASIK stands for laser in situ keratomileusis  Developed in 1991 by a greek doctor Ioannis Pallikaris  Purpose to correct.

Phakic IOL. 2 How the eye works Light rays enter the eye through the clear cornea, pupil and lens. These light rays are focused directly onto the retina,

Walter Huang, OD Yuanpei University Department of Optometry

Refractive Lens Exchange. 2 How the eye works Light rays enter the eye through the clear cornea, pupil and lens. These light rays are focused directly.

Hyperopia Walter Huang, OD Yuanpei University Department of Optometry.

Diabetes and vision. Summary Diabetes facts Changes to the eyes with diabetes Diabetic retinopathy –Background retinopathy –Proliferative retinopathy.

LASER EYE SURGERY UNIT Holmes Medical Center. Laser Eye Surgery Unit Opens March 22 Headed by Dr. Martin Talbot from the Eastern Eye Surgery Clinic Safe,

CLINICAL APPROACH TO REFRACTIVE ERRORS

Driving and vision. The importance of good vision for driving can not be overemphasised.

3-D Vision One person holds test tube at arms length Other holds pencil in arm upright Try to swing down lower arm to place pencil directly in test tube.

Incisional Procedures Insert name/ Practice name/ Logo here if desired.

PRCTICAL DIFFICULTIES OF PROGRESSIVE LENS FITTING

Visual Perception Kit Carolina $

Physician Certification for CustomVue ™ Presbyopic Ablations.

University of Idaho Business 378 – Project Management Yoshi Pitkin.

Understanding Amblyopia

Better Health. No Hassles. [Name of Presenter] Children’s Eyes and Vision.

MR250 Unit 4 Ophthalmology. MT Client Any questions about MT Client this unit? Some words to watch – assess and access sights and sites heel and heal.

Technology Integration Planning Guidelines for Development A Visual Guide.

Wavefront by Method of Ray Tracing: Because the Eye is Not a Telescope

Communication with the Outside World

1 Reduction of ocular chromatic aberration by a blue light filtering intraocular lens Jim Schwiegerling, PhD Ophthalmology and Vision Science, The University.

Conductive Keratoplasty (CK) Insert name/ Practice name/ Logo here if desired.

Subjective refraction

Visual Impairment. Factors Affecting Visual Function and Their Treatment Visual Acuity - ability to see "detail" –Measured using testing distance/letter.

The Eyes and Vision. I. Anatomy of the Eye The eye consists of 3 layers or tunics Fibrous tunic- The eye consists of 3 layers or tunics Fibrous tunic-

Children’s Eyes and Vision [Name of Presenter] Doctor of Optometry.

The Eye and Sight Chapter 12. Vision begins when light rays are reflected off an object and enter the eyes through the cornea, the transparent outer covering.

Multifocal Intraocular Lenses Abdullah Al-assiri Mansour Farooqui Abdulrahman Al-Muammar Saudi Ophthalmology Meeting 2009.

Types of refraction Clinical classification of myopia.

REFRACTION Dr. Puneet Kumar Srivastava. Refraction Def: Method of evaluating the optical state of eye. Or The process by which the patient is guided through.

Psychophysical theories Signal detection theory: A psychophysical theory that quantifies the response of an observer to the presentation of a signal in.

Examination Techniques for Accuracy and Efficiency Astigmatism Detection and Management Options A VOSH-Florida Presentation.

Lifestyle and Refractive Factors Associated with Progressive Addition Lens Preference The Center for Ophthalmic Optics Research, The Ohio State University.

VISION SCREENING 101.

OPTO 4101: Refraction1 Subjective verification for refraction

시야검사의 이해 서울성모병원 안 명 덕.

Keeler All-Pupil II Indirect Ophthalmoscope

OPTO 4101: Refraction1 Difficulties in retinoscopy

Examination Techniques for Accuracy and Efficiency

Examination Techniques for Accuracy and Efficiency

OPTO 4101: Refraction1 Subjective verification for refraction

Physiology of Vision.

The Visual System.

Examination Techniques for Accuracy and Efficiency

Examination Techniques for Accuracy and Efficiency

Examination Techniques for Accuracy and Efficiency

Examination Techniques for Accuracy and Efficiency

Presentation transcript:

Meridional Interactive Subjective Refraction Apparatus Problem Clinical refraction involves a set of optical and visual tests that can be difficult to manage on account of variations in depth of focus, pupil size, retinal acuity, accommodation, measurement technique, and peripheral refraction. Solution The Meridional Interactive Subjective Refraction Apparatus (MISRA TM ) helps determine optical sphere (myopia/ hyperopia) and astigmatism (meridional toroid) by principles of visual psychophysics embodied in robotic technology and succeeds where other state-of-the-art methods are less reliable.

MISRA™ Visual Task Patients are instructed to respond manually to a task that requires them to choose the clearer of two adjacent targets presented laterally.

MISRA™ Key Features 1. Target position within a table-top device substitutes lens power in a phoropter. 2. Patient interacts with the robotic technology of the device under supervision. 3. Multiple spatial scales enable macular as well as foveolar refraction. 4. Accurate subjective refraction enabled in various eye disorders and disease states.

MISRA™ Design Advantages 1. Presents discernible differences in blur 2. Eliminates use of Jackson’s crossed cylinders 3. Easy to use despite retinal damage 4. Consistent despite media opacities 5. Unaffected by pupil size or shape 6. Repeatable despite irregular astigmatism 7. Can be configured for night myopia 8. Optional visual psychophysical tests available

MISRA™ Managerial Advantages 1. Saves exam room space 2. Reduces time spent by doctor on refraction 3. Easily supervised by non-clinical professionals 4. Consistent method across clinic staff 5. Design features enhance patient compliance 6. Brings science to the art of refraction 7. Web portal enables collaborative research

References 1. Aggarwala K. Apparatus and method for subjective determination of the refractive error of the eye. 2011; Aggarwala KR, Kruger ES, Mathews S, Kruger PB. Spectral bandwidth and ocular accommodation. J Opt Soc Am A Opt Image Sci Vis March; 12(3): Aggarwala KR, Nowbotsing S, Kruger PB. Accommodation to monochromatic and white-light targets. Invest Ophthalmol Vis Sci December; 36(13):