- Myopia- nearsightedness; a condition which makes it difficult to focus on distant objects. On a written
prescription, minus (-) numbers are used to indicate myopia. Can be corrected with glasses and/or
- Hyperopia- farsightedness; a condition which makes it difficult to focus on near, and sometimes distant,
objects. On a written prescription, plus (+) numbers are used to indicate hyperopia. Can be corrected
with glasses and/or/ contact lenses.
- Presbyopia- an age-related condition in which it is difficult to focus on near objects, correctable with
"reading glasses". On a written prescription, a value in the ADD box indicates presbyopia.
- Astigmatism- Irregular curvature of the cornea (or lens) causing blurred vision and sometimes shadows.
On a written prescription, a value in the cylinder and axis boxes indicates astigmatism.
- Amblyopia- a decrease in vision without an identifiable cause, commonly called a "lazy eye".
- Cataracts- Cloudening in the lens that may be associated with diseases, medication, or normal aging that
may cause some loss of vision.
- Glaucoma- Eye disease that affects the optic nerve, which can potentially lead to vision loss. Patients
with glaucoma typically show an increase in intra ocular pressures and decrease in peripheral vision.
How do I read my prescription?
What is dilation? Do I need it?
Dilating the pupil with dilating drops allows the doctor a much better view inside the eye to detect problems
such as glaucoma, cataracts, retinal detachments, macular degeneration, diabetes, and high blood pressure.
Without dilation, the doctor has a limited view of the interior of the eye and would not be able to detect any
tears, holes, or hemorrhages that occur in the far periphery of the eye.
Although not a required procedure, it is recommended for a full, comprehensive eye examination. It is especially
important for those patients who have a history of diabetes, high blood pressure, headaches, flashes of light or
floaters, high near-sightedness, cataracts, or family history of glaucoma or retinal problems.
Dr. Allen Hui Optometry, LLC.
7100 W. Arroyo Crossing Pkwy
Las Vegas, NV 89113
© 2009 Dr. Allen Hui Optometry, LLC. All Rights Reserved.