Index to Chiropractic Literature
Index to Chiropractic Literature
My ICL     Sign In
Friday, March 29, 2024
Index to Chiropractic LiteratureIndex to Chiropractic LiteratureIndex to Chiropractic Literature
Share:


For best results switch to Advanced Search.
Article Detail
Return to Search Results
ID 20041
  Title Changes in visual acuity in patients receiving upper cervical specific chiropractic care
URL http://www.vertebralsubluxationresearch.com
Journal J Vert Sublux Res. 1998 ;2(1):p. 1-7
Author(s)
Subject(s)
Peer Review Yes
Publication Type Article
Abstract/Notes The present study was conducted to investigate the relationship between Upper Cervical Specific chiropractic care and changes in visual acuity. The population under study represented sixty seven subjects who had not previously experienced chiropractic care. They ranged in age from 9 to 79 years, averaging 46.4 ± 17.0.The subject group consisted of 37 females (48.7 ± 18.9 years) and 30 males (43.5 ±15.7 years). They were evaluated for each eye, before and six weeks after receiving chiropractic care, relative to their ability to accurately identify letters in a standard Snellen Chart. The chart contained 11 rows in which a different number of letters of varying sizes were displayed. Scores, for the population as a whole, were reported as the mean and standard deviation of the absolute number missed in each row before and after care, and further expressed as a percent increase or decrease, pre/post chiropractic care, for each row as "percent change in distance visual acuity," (%DVA). Findings from this initial study suggest that observed changes were not a function of gender. Thus, the population as a whole demonstrated statistically significant improvement in the right eye (paired two-tailed t-test, p < 0.05) in distance visual acuity (%DVA) at distances associated with less than "typical" normal vision (20/50, 20/40, 20/25),"typical" normal vision (20/20), and better than "typical" normal vision (20/16). Significant improvements were also shown for the left eye at the same distance acuity levels, as well as at the levels of 20/125, 20/80, and 20/60. Regression analysis (p < 0.05) of scores before chiropractic care revealed a positive correlation between increasing age and number of letters incorrectly identified at the levels of 20/20 and 20/16 for both the right and left eyes. Regression analysis performed on scores after chiropractic care revealed the same relationship for the left eye as before care. However, after care, this relationship was only apparent at the 20/16 level in the right eye. Thus, evaluation of these data show improvements in % DVA following Upper Cervical Specific chiropractic care, at distances "typically" associated with less than normal, normal, and better than normal vision, with no correlation between upper cervical vertebral "listing." Improvement in the left eye was evident at greater extremes of low vision than in the right eye. However, age related differences in the number of incorrectly identified letters, associated "typically" with normal and better than normal vision, showed apparent improvement in normal vision in the right eye following care. Possible implications and explanations for these findings are discussed.

This abstract is reproduced with the permission of the publisher.

   Text (Citation) Tagged (Export) Excel
 
Email To
Subject
 Message
Format
HTML Text     Excel



To use this feature you must register a personal account in My ICL. Registration is free! In My ICL you can save your ICL searches in My Searches, and you can save search results in My Collections. Be sure to use the Held Citations feature to collect citations from an entire search session. Read more search tips.

Sign Into Existing My ICL Account    |    Register A New My ICL Account
Search Tips
  • Enclose phrases in "quotation marks".  Examples: "low back pain", "evidence-based"
  • Retrieve all forms of a word with an asterisk*, also called a wildcard or truncation.  Example: chiropract* retrieves chiropractic, chiropractor, chiropractors
  • Register an account in My ICL to save search histories (My Searches) and collections of records (My Collections)
Advanced Search Tips