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Ophthalmology & Optometry/Expert Profile

Dr. Margaret Placentra Johnston, OD

U.S.

Maxed Out

Expertise

I can answer almost any question about vision and general eye health care. As a non-surgeon, I may not be able to answer very involved technical questions about surgical procedures or highly specialized medical treatments. As of March 10, 2010, I will no longer answer any questions about Clear Care. People who do not understand how to use it should contact their eye doctor directly for advice.

Experience in the area

I hold the degree of Doctor of Optometry and was in full-time private practice for twenty-five years. Currently I have reduced my schedule to part-time to allow time to write a book on another topic.

Organizations

American Optometric Association, Virginia Optometric Association, Northern Virginia Optometric Society (and others unrelated to this topic)

Publications

Http://www.exploring-spiritual-development.com, http://www.BeliefStagesandGrowth.com

Education/Credentials

O.D. (Doctor of Optometry) Pennsylvania College of Optometry (now called Salus University,) B.S. Pennsylvania College of Optometry, M.A. (Education) Catholic University of America, B.A Catholic University of America.

Average Ratings

Recent Reviews from Users

User	Date	K	C	P	Comments
Michael	05/08/12	10	10	10
Joani	03/27/12	10	10	10	Wow, you really made me feel better! .....
Ugne	03/19/12	8	8	10
Nirvana	01/15/12	10	10	10	Okay thanks.
Jeremy	01/14/12	10	10	10	Thank you so much for the answer .....

Recent Answers from Dr. Margaret Placentra Johnston, OD

2012-05-20 Reading in the moving viechle:

I don't believe there is any firm data on this. There is no reason reading in a moving vehicle would make their eyes worse any more than reading when sitting still. It is true that kids reading for hours

2012-05-07 Watching TV in the dark?:

The high contrast between the bright screen of the TV or computer and the dark room is not thought to be good for one's visual comfort. Your eyes are more likely to become strained and function less efficiently

2012-04-25 Axis change:

Hello Damian. Your optician is correct. Despite the axes being very different, the change to your spectacle Rx is inconsequential. The axis refers to a position on a 180 half-circle where the astigmatism

2012-04-17 possible scratch:

Hi Karen. If the bark flew in your eye two days ago and you are still having symptoms, you need to see an eye doctor. Minor scratches heal within about 24 hours, or certainly by 48 hours. If it hasn't

2012-04-12 Poor Vision w/ Child:

hello Jason. My goodness, your child has strong myopia for his age. You are wise to be seeking preventive measures to keep it from getting worse. 1) You will not want to hold your breath about

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