PMID- 23631807
OWN - NLM
STAT- MEDLINE
DCOM- 20140211
LR  - 20220331
IS  - 1460-2202 (Electronic)
IS  - 0271-3683 (Linking)
VI  - 38
IP  - 8
DP  - 2013 Aug
TI  - Anterior segment changes produced in response to long-term overnight 
      orthokeratology.
PG  - 862-70
LID - 10.3109/02713683.2013.790977 [doi]
AB  - PURPOSE: To evaluate the effect of overnight orthokeratology (OK) on anterior 
      chamber depth (ACD), posterior radius of corneal curvature (PRCC) and axial 
      length (AL) over one year. METHODS: In this prospective longitudinal study, 
      measurements were made in 34 right eyes of 34 subjects at baseline, 15 days, 1 
      and 12 months after starting OK treatment. ACD and PRCC measurements were 
      obtained using a Pentacam system and AL was measured using an IOL-Master. ACD and 
      PRCC were measured along the horizontal and vertical meridians at 1 mm intervals. 
      These measurements were expressed as the distance from the center in the nasal 
      (N), temporal (T), superior (S) and inferior (I) directions. RESULTS: A 
      significant reduction in ACD was observed in both meridians during treatment. 
      PRCC flattened significantly in the (T) direction after 15 d (1 mm, p < 0.05), at 
      the corneal center after 15 d (p < 0.01), in the (T) direction after 1 month 
      (1 mm, p < 0.05), in the (S) direction after 12 months (1 mm p < 0.05), in the 
      (N) direction after 12 months (1 mm p < 0.05), in the (N) and (T) directions 
      after 12 months (3 mm, p < 0.05) and in the (T) direction after 12 months (4 mm 
      p < 0.05), at the corneal center after 12 months (p < 0.01). AL was significantly 
      reduced during treatment (p < 0.05). CONCLUSIONS: A long period of OK reduces ACD 
      and AL and changes PRCC.
FAU - Gonzalez-Mesa, Ana
AU  - Gonzalez-Mesa A
AD  - Department of Optics II, University School of Optics, Madrid, Spain. 
      ana.gmesa@gmail.com
FAU - Villa-Collar, Cesar
AU  - Villa-Collar C
FAU - Lorente-Velazquez, Amalia
AU  - Lorente-Velazquez A
FAU - Nieto-Bona, Amelia
AU  - Nieto-Bona A
LA  - eng
PT  - Clinical Trial
PT  - Journal Article
DEP - 20130430
PL  - England
TA  - Curr Eye Res
JT  - Current eye research
JID - 8104312
SB  - IM
MH  - Adult
MH  - *Anterior Chamber
MH  - Axial Length, Eye
MH  - *Contact Lenses
MH  - Female
MH  - Humans
MH  - Longitudinal Studies
MH  - Male
MH  - Myopia/*therapy
MH  - Orthokeratologic Procedures/*methods
MH  - Photography/methods/standards
MH  - Prospective Studies
MH  - Reproducibility of Results
MH  - Statistics, Nonparametric
MH  - Treatment Outcome
MH  - Visual Acuity
MH  - Young Adult
EDAT- 2013/05/02 06:00
MHDA- 2014/02/12 06:00
CRDT- 2013/05/02 06:00
PHST- 2013/05/02 06:00 [entrez]
PHST- 2013/05/02 06:00 [pubmed]
PHST- 2014/02/12 06:00 [medline]
AID - 10.3109/02713683.2013.790977 [doi]
PST - ppublish
SO  - Curr Eye Res. 2013 Aug;38(8):862-70. doi: 10.3109/02713683.2013.790977. Epub 2013 
      Apr 30.