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Peripheral Design of Progressive Addition Lenses and the Lag of Accommodation in Myopes.

Abstract Insufficient accommodative response is assumed to result in myopia progression. We have investigated if the accommodative lag in myopes is different between a single vision lens (SVL) and the progressive addition lens PAL 2, clinically trialled for its ability to reduce progression of myopia, and if there exist differences in accommodative lag between PAL 2 and other PALs with the same addition power (+1.50 D).
PMID
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Authors

Mayor MeshTerms

Eyeglasses

Keywords
Journal Title investigative ophthalmology & visual science
Publication Year Start




PMID- 28672398
OWN - NLM
STAT- MEDLINE
DA  - 20170703
DCOM- 20170714
LR  - 20170714
IS  - 1552-5783 (Electronic)
IS  - 0146-0404 (Linking)
VI  - 58
IP  - 9
DP  - 2017 Jul 01
TI  - Peripheral Design of Progressive Addition Lenses and the Lag of Accommodation in 
      Myopes.
PG  - 3319-3324
LID - 10.1167/iovs.17-21589 [doi]
AB  - Purpose: Insufficient accommodative response is assumed to result in myopia
      progression. We have investigated if the accommodative lag in myopes is different
      between a single vision lens (SVL) and the progressive addition lens PAL 2,
      clinically trialled for its ability to reduce progression of myopia, and if there
      exist differences in accommodative lag between PAL 2 and other PALs with the same
      addition power (+1.50 D). Methods: The influence of spherical SVL and four
      different designs of PALs that differ in the near zone width (PAL 1) or that have
      different signs and magnitude of horizontal gradients of mean power adjacent to
      their near vision zones (PAL 3 and PAL 4) on the accommodative response was
      investigated for different near viewing distances (40, 33, and 25 cm) in 31
      subjects, aged 18 to 25 years. Results: The SVL correction resulted in
      insufficient accommodative response for the near object viewing distances tested.
      PAL 2 did significantly reduce accommodative lag for all near object distances
      tested. The PAL design with a more negative horizontal mean power gradient (PAL
      4) provided a lower lag of accommodation when compared with PAL 2 at the shortest
      object distance of 25 cm (P = 0.03) and was able to reduce the lag of
      accommodation to a level below the depth of focus for the higher near working
      distances tested. Conclusions: Designs of PAL with more negative horizontal mean 
      power gradients are the most effective in lowering the lag of accommodation in
      myopes. This could make them good test candidates for myopia control
      applications.
FAU - Schilling, Tim
AU  - Schilling T
AD  - Institute for Ophthalmic Research, Eberhard Karls University Tuebingen,
      Tuebingen, Germany.
FAU - Ohlendorf, Arne
AU  - Ohlendorf A
AD  - Institute for Ophthalmic Research, Eberhard Karls University Tuebingen,
      Tuebingen, Germany 2Carl Zeiss Vision International GmbH, Aalen, Germany.
FAU - Varnas, Saulius R
AU  - Varnas SR
AD  - Carl Zeiss Vision Australia Holdings Limited, Lonsdale, South Australia,
      Australia.
FAU - Wahl, Siegfried
AU  - Wahl S
AD  - Institute for Ophthalmic Research, Eberhard Karls University Tuebingen,
      Tuebingen, Germany 2Carl Zeiss Vision International GmbH, Aalen, Germany.
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Invest Ophthalmol Vis Sci
JT  - Investigative ophthalmology & visual science
JID - 7703701
SB  - IM
MH  - Accommodation, Ocular/*physiology
MH  - Adolescent
MH  - Adult
MH  - Disease Progression
MH  - Equipment Design
MH  - *Eyeglasses
MH  - Female
MH  - Humans
MH  - Male
MH  - Myopia, Degenerative/physiopathology/*therapy
MH  - Refraction, Ocular/physiology
MH  - Young Adult
EDAT- 2017/07/04 06:00
MHDA- 2017/07/15 06:00
CRDT- 2017/07/04 06:00
AID - 2643154 [pii]
AID - 10.1167/iovs.17-21589 [doi]
PST - ppublish
SO  - Invest Ophthalmol Vis Sci. 2017 Jul 1;58(9):3319-3324. doi:
      10.1167/iovs.17-21589.