Visual Acuity Testing - University of Iowa
2015年10月19日 · We will be discussing what visual acuity is. How visual acuity is used. The various classifications of visual acuity. Types of visual acuity testing. Chart design and the …
Distance visual acuity - University of Iowa
2017年1月12日 · Distance visual acuity. Richard C. Allen, MD, PhD, FACS Additional Notes: Length 00:47 In checking distance visual acuity, the patient should wear their glasses if they …
Near visual acuity - University of Iowa
2017年1月12日 · Near visual acuity. Richard C. Allen, MD, PhD, FACS Additional Notes: Length 00:28. Near visual acuity is determined with the patient wearing their glasses. Each eye is …
Pediatric Visual Acuity Testing - University of Iowa
2021年5月9日 · We know that a 3 mm object is approximately equivalent to a 4/2 visual acuity size letter which is equivalent to a 20/10 acuity. A 30 mm object is equivalent to a 20/100 …
- Diffraction causes a decrease in normal visual acuity for apertures less than 2 mm (such as a very small pupil of the eye). Geometric Optics deals with the formation of images by rays of …
Refractive changes in diabetes: not always what meets the eye
2020年4月14日 · Given the lack of concerning features on exam and his markedly elevated A1c, we elected to proceed with close observation with frequent monitoring of visual acuity, …
Tutorial: Binocular Vision - University of Iowa
2006年1月23日 · Fovea, which is the area of the highest visual acuity, is the carrier of Principle Visual direction and is the center to which the secondary visual direction of the other retinal …
Visual&Acuity&and& Refraction& An!accurate!and!stable!preoperative!refraction!is!important!in!determining!if!a patient! is! …
Functional Visual Loss - University of Iowa
2013年3月6日 · Functional visual loss refers to a decrease in visual acuity or loss of visual field with no underlying physiologic or organic basis. Patients with functional visual loss make up 1 …
Choroidal Malignant Melanoma: - University of Iowa
2014年7月8日 · Tumors can be asymptomatic and detected incidentally on fundus exam or symptomatic with decreased visual acuity, blurring, metamorphopsia, flashes, floaters or visual …