Q: In this image a stage micrometer and an ocular micrometer are aligned so that the 10 o.u. line…
A: Given: 10 o.u. aligns 100 um. 90 o.u. aligns 200 um. This basically means: 90-10 o.u. = 200-100 um…
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Q: Calculate for the calibration factor. (3 points) (Note: stage micrometer is 1 mm long with 100…
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What is the relationship between the diopter number that show up on opthalmoscope when one is visualizing theback of the eye on a subject?
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- Use the iris diaphragm to attain the best illumination of the letter “e” on the scanning (4x) objective. Open and close the iris diaphragm and notice the changes in contrast of the letter “e”. How did the appearance of the letter “e” change under the various levels of illumination? 1 Repeat the above procedure on the high-power (40x) objective. When increasing magnification, what happens to the light available? Why?What is the total magnification of 4x objective lens and diameter of field of view in micrometers?What is the significance of using oil with the immersion lens and why can't oil be used with any other lens?
- Calculate for the calibration factor. (3 points) (Note: stage micrometer is 1 mm long with 100 divisions) EYEPIECE RETICLE 10 20 30 40 50 60 70 0 80 100 M⁹⁰ př 10 40 50 20 OPE www.fanfi |||||||| STAGE MICROMETER 60 |||||||4. 45 year old man can see with his left eye between 25 →300 cm and in his right eye between 15cm→ ∞. a man has astigmatism at his left eye which requires a lens of focal length +0.5m at axis 120°. The patient requires magnification glasses of focal length 0.25m. write the required prescription for this patientwhich objective lens is in place if the object you are viewing is magnified 1000x? (assume ocular lens magnification = 10x)
- What is the diameter of the field of view (DFV) of a 1000x objective lens if the DFV of a 400x objective lens is 500 μ? Express your answer in mm.What is the primary difference between the method of focusing used by the eye and by a camera? Explain. *The pupil of a person's eye changes from a diameter of 3.5 mm to 1.5 mm as the illumination is increased. By what factor does the minimum angle of resolution change?
- Where does the TPC diverge from the SPEC in terms of focus?What are the functions of the Fine Focus, Coarse Focus, Stage Clip, Rack Stop, Arm, Eyepiece, Revolving Nosepiece, Objective Lens, Stage and Condenser? Explain eachIn this image a stage micrometer and an ocular micrometer are aligned so that the 10 o.u. line aligns with the 100um line. The 200um line of the stage micrometer overlaps with the 90 o.u. line of the ocular micrometer. What is the calibration for this lens? eyepiece graticule 40 50 60 70 s0 9 100 stage micrometer 0.8 um/ou O 8 um/ou O 1.25 um/ou 0.25 um/ou