Concave lenses
(View Complete Item Description)An introduction to Concave Lenses. Created by Sal Khan.
Material Type: Lesson
All resources in Optometry
Convex lenses
(View Complete Item Description)An introduction to Convex Lenses. Created by Sal Khan.
Material Type: Lesson
Diffraction
(View Complete Item Description)In this optics activity, demonstrate diffraction using a candle or a small bright flashlight bulb and a slide made with two pencils. Learners will observe the diffraction pattern and learn that light has wavelike properties.
Material Type: Activity/Lab
Geometric Optics
(View Complete Item Description)How does a lens form an image? See how light rays are refracted by a lens. Watch how the image changes when you adjust the focal length of the lens, move the object, move the lens, or move the screen.
Material Type: Simulation
Hand Lens Introduction
(View Complete Item Description)In this Exploration Routine, students learn how to most effectively use their hand lenses. They practice finding the “sweet spot” – the distance to hold the lens between eye and object so the object comes into focus. Without this introduction, students may become frustrated or distracted by hand lenses because they don’t understand how to use them. With this quick activity, students develop a healthy fascination with this transformational tool and feel empowered to use it like a scientist. This activity is also an opportunity to invite your students into inquiry. By modeling how to use a lens, how to say observations out loud, and by encouraging students to check things out and share discoveries, you can begin to set a tone of collaborative inquiry for your group.
Material Type: Activity/Lab
Lasers
(View Complete Item Description)Create a laser by pumping the chamber with a photon beam. Manage the energy states of the laser's atoms to control its output.
Material Type: Simulation
Helping Students Discover Total Internal Reflection
(View Complete Item Description)Students learn the basic relationship of Snell's Law, practice applying it to a situation, then are given another situation where it "doesn't work."??? This situation turns out to be one in which total internal reflection occurs. Students are then shown what happens with classroom apparatus.
Material Type: Activity/Lab, Simulation
Cataracts (Spanish)
(View Complete Item Description)This patient education program explains cataracts including the symptoms, diagnosis, complications, and treatment options. It also discusses the risks and benefits of surgery and what to expect after the procedure. This resource is a MedlinePlus Interactive Health Tutorial from the National Library of Medicine, designed and developed by the Patient Education Institute.
Material Type: Lecture
Aqueous humour outflow imaging: seeing is believing
(View Complete Item Description)This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview: "Over the past decade, a variety of new drugs and surgical techniques have been developed to lower intraocular pressure and treat glaucoma. This trend has reinvigorated interest in understanding how and where aqueous humour outflow occurs. Three main pathways are currently known: trabecular, or **_conventional_**, outflow; uveoscleral, or **_unconventional_**, outflow; and subconjunctival outflow. Current methods for imaging these pathways are at varying stages of development, with conventional outflow imaging being the most advanced. Nevertheless, each route possesses a unique biology that can be leveraged in the quest for more knowledge about aqueous humour outflow. Conventional outflow accounts for approximately 90% of aqueous humour flow under physiologic conditions. Here, imaging methods have focused on capturing structural or flow-based features. Optical coherence tomography has enabled researchers to assess ocular tissue in live human subjects..." The rest of the transcript, along with a link to the research itself, is available on the resource itself.
Material Type: Diagram/Illustration, Reading
Color Vision
(View Complete Item Description)Make a whole rainbow by mixing red, green, and blue light. Change the wavelength of a monochromatic beam or filter white light. View the light as a solid beam, or see the individual photons.
Material Type: Simulation
Sensory Perception
(View Complete Item Description)Different types of sensory systems with their functional modalities will be presented. The biological bases for how these functions are generated and modified will then be described. As vision is the principal means of perception, we will focus in this course most on visual processing. Scientific data will be integrated into the lectures, such that students develop critical skills in analyzing data and proposing hypotheses.
Material Type: Syllabus