Optom 316 Study guides, Study notes & Summaries

OPTOM 316 Test NEW VERSION UPDATE ACTUAL EXAM 360 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) 100% PASS SOLUTION /ALREADY GRADED A+

Measurement of lens surfaces. - -Curvature (R): reciprocal of radius (m^-1), R=1/r. -Sagitta (S): distance between a point on a circle and the midpoint of the chord, s=r-(√r^2- h^2). Approximate formula: s=h^2/2r (only used when s is much smaller than r). Calculation of lens surface power. - -Power is dependent on curvature and RI. -F=(n'-n)/r -F=(n'-n)R. Measurement of surface power. - -Can be done with a lens measure or lens check. -Actually measures the sagitta of the lens. -Cali...

Measurement of lens surfaces. - -Curvature (R): reciprocal of radius (m^-1), R=1/r. -Sagitta (S): distance between a point on a circle and the midpoint of the chord, s=r-(√r^2- h^2). Approximate formula: s=h^2/2r (only used when s is much smaller than r). Calculation of lens surface power. - -Power is dependent on curvature and RI. -F=(n'-n)/r -F=(n'-n)R. Measurement of surface power. - -Can be done with a lens measure or lens check. -Actually measures the sagitta of the lens. -Cali...

Myopia. - -Far point located closer than optical infinity -Near point located between far point and eye. -Axial length too long for correct focus. Hyperopia. - -Far point is virtual and behind the retina. -Two types: manifest/absolute and latent/faculative. -Young hyperopia able to move far point of the eye onto the retina via accommodation. -Therefore to correct hyperopia need to make sure accommodation relaxed. Astigmatism. - -Parallel rays of light (accommodation relaxed) do not form ...

When to do a VF test. - -Consider cost vs benefit. (Cost isn't necessarily monetary). -Based off patient history: head trauma, stroke, family history of glaucoma, patient complaint. -Age: older than 40 years. -Other signs of ocular disease: high IOP, asymmetric ON, macular haemorrhage. -Unexplained reduced VA. What to consider when selecting types of VF tests. - -Qualitative (good for first VF test) or quantitative (good for tracking). -What parts of the VF are you interested in? (Ce...

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