A common complaint of diabetic persons is blurred vision. Most think that the hi

Question

A common complaint of diabetic persons is blurred vision. Most think that the high plasma glucose causes glucose to enter the lens and causes it to swell and be more rigid. A. What should this to the refractive power of the lens? What equation shows us this and what aspect would be affected? B. Where will the image be focused? Will this lead to an increase or a decrease in focal length? What part of the thin lens formula will be changed? C. Will the power of accommodation be increased or decreased in these patients? Why?

Explanation / Answer

ANS A) The refractive power of the lens of such a person should be +0.75 D.

The average values of the preliminary measurements had been as follows: fpg degree, 415 mg/dl; average refractive price, +2.5d (dioptres). the common quit of length measurements were fpg, 203 mg/dl; common refractive value, +0.75 d.

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ANS B) Optics refraction, the best interpretation of visual information, relies upon on the attention’s potential to recognition incoming rays of light onto the retina. an understanding of this process and the way it is encouraged by way of normal versions or ocular sickness is vital to the successful use of any optical aid; e.g. corrective lenses, touch lenses, intraocular lenses, or low-vision aids. correct diabetic control retards the development of retinopathy and different diabetic complications which include extended refractive mistakes

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ANS C) There may be a statistically giant difference between after four weeks measurements with to begin with measurements of fasting plasma glucose (fpg) ranges (p<0.05) and there's a statistically sizable courting among adjustments in fpg modifications with glasses identity (p<0.05) and the disappearance of blurred vision (to be greater than 50% success charge) had been statistically widespread (p<0.05). Also, were detected upon all these results the absence of any age and sex effects (p>0.05).

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