Document Detail


Accommodative Response/Stimulus by Dynamic Retinoscopy: Near Add Guidelines.
MedLine Citation:
PMID:  22940782     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
PURPOSE.: Monocular estimation method (MEM) dynamic retinoscopy and low neutral (LN) dynamic retinoscopy are common procedures for evaluating the need for near-point plus adds for improved near-point performance in non-presbyopes. A combination of MEM and LN has been suggested to be a method of plotting accommodative response/accommodative stimulus functions and evaluating guidelines for prescribing from MEM. METHODS.: Using a combined MEM-LN procedure, MEM was performed on 80 young adults at 40 cm, with distance correction and with plus adds in 0.25 D steps up to and including +2.00 D. Modified Thorington dissociated phorias were also performed with each of the plus adds. Subjects picked a preferred add, which subjectively made print easiest and most comfortable to read. RESULTS.: The mean preferred add was +0.58 D over the distance prescription. The add derived from subtracting 0.25 D from the lag of accommodation with distance correction averaged 0.10 D more plus than the preferred add. The add at which dynamic retinoscopy showed a "with" motion of 0.25 D averaged 0.54 more plus than the preferred add. The add at which dynamic retinoscopy showed a "with" motion of 0.50 D averaged 0.16 more plus than the preferred add. CONCLUSIONS.: Adds derived from subtracting 0.25 D from the lag with distance correction and from finding the add that yields 0.50 D of "with" motion compared favorably with the preferred adds on average, but the standard deviations of the differences were high. Those guidelines could be reasonable starting points for the prescription of near-point plus adds for non-presbyopes, but follow-up testing to confirm or adjust add power would be advisable in the clinical setting.
Authors:
David A Goss; Sania Rana; Julie Ramolia
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-30
Journal Detail:
Title:  Optometry and vision science : official publication of the American Academy of Optometry     Volume:  -     ISSN:  1538-9235     ISO Abbreviation:  Optom Vis Sci     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-9-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8904931     Medline TA:  Optom Vis Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
School of Optometry, Indiana University, Bloomington, Indiana (DAG, SR, JR).
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Transepithelial Cross-Linking in Keratoconus Patients: Confocal Analysis.
Next Document:  Progressive Addition Lens Measurement by Point Diffraction Interferometry.