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BIOCO SAS 1 Refractive status.pdf - OPT006: Primary Eye and...

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OPT006: Primary Eye and Vision CareModule # 1Name: _____________________________________________________________Section: ____________ Schedule: _______________________________________Class number: _______Date: _______________This document is the property ofPHINMA EDUCATIONLesson title: Refractive statusLesson Objectives:1. To be able to understand the refractive status of the eye anddifferientiate it’s typesMaterials:Book, Internet, PptReferences:Clinical Procedure for OcularExamination ; Primary CareOptometry(Book or InternetSource)Productivity Tip:Philippians 4:13 “I Can Do All Things Through Christ Who Strengthens”A. LESSON PREVIEW/REVIEW1)Introduction (2 mins)REFRACTIVE STATUS- signifies the relation of the refracting system of the eye to its axial length by indicating the focal length of theeye or the position of its principal focus as compared to the position of the retina, with positiveaccommodation inactive.Components of refractive status:a.RefractiveCornea: responsible for the majority (2/3)of the refractive power of the eye (43 D)Lens: responsible for 1/3 of the refractive power (19 D), changes with accommodation (23 D)Total refractive power of the eye: 63 diopters.b.Axial length = average 24mm2)Activity 1: What I Know Chart, part 1 (3 mins)Instruction: Write what you currently understand about the questions provided. Write your answers at the"What I know" section for this activity.What I Know (Activity 1)Questions:What I Learned1. Define Refractive status?2. What are the components ofrefractive status?3. Define emmetropia4. Define dynamic refraction.
OPT006: Primary Eye and Vision CareModule # 1Name: _____________________________________________________________Section: ____________ Schedule: _______________________________________Class number: _______Date: _______________This document is the property ofPHINMA EDUCATIONB.MAIN LESSON1)Activity 2: Content Notes (13 mins)Refraction- is the bending of light as it passes through one object to another.TYPES OF REFRACTION:a)Static refraction- when the refractive power of the eye is determined or indicated under conditions whenaccommodation is relaxed or at rest.b)Dynamic refraction- when the refractive power of the eye is determined or indicated under conditions whenaccommodation is not at rest or is at its maximum.REFRACTIVE PHYSIOLOGYVision occurs when light rays are bent (refracted) as they pass through the cornea and the lens. Thelight is then focused on the retina. The retina converts the light rays into messages that are sent.

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Term
Summer
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N/A
Tags
Light, refractive error, Primary Eye and Vision Care

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