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PMID- 28243023
OWN - NLM
STAT- MEDLINE
DA  - 20170228
DCOM- 20170314
LR  - 20170314
IS  - 2092-9382 (Electronic)
IS  - 1011-8942 (Linking)
VI  - 31
IP  - 1
DP  - 2017 Feb
TI  - Validity of Tono-pachymetry for Measuring Corrected Intraocular Pressure in
      Non-surgical and Post-photorefractive Keratectomy Eyes.
PG  - 44-51
LID - 10.3341/kjo.2017.31.1.44 [doi]
AB  - PURPOSE: To assess the validity of central corneal thickness (CCT) and corrected 
      intraocular pressure (IOP) values obtained by tono-pachymetry in non-surgical and
      post-photorefractive keratectomy (PRK) eyes. METHODS: For the study, 108 young
      healthy participants and 108 patients who had PRK were enrolled. Measurements
      were randomly performed by tono-pachymetry, ultrasonic (US) pachymetry, and
      Goldmann applanation tonometry (GAT). CCT measurement by tono-pachymetry was
      compared to that of US pachymetry. The corrected IOP value obtained by
      tono-pachymetry was compared to that obtained by US pachymetry and GAT. The
      corrected IOP from US pachymetry and GAT was calculated using the identical
      compensation formula built into the tono-pachymetry. Bland-Altman plot and paired
      t-test were conducted to evaluate the between-method agreements. RESULTS: The
      mean CCT measurement using tono-pachymetry was significantly greater by 7.3
      microm in non-surgical eyes (p < 0.001) and 17.8 microm in post-PRK eyes (p <
      0.001) compared with US pachymetry. Differences were significant in both
      Bland-Altman plotand paired t-test. The mean difference of corrected IOP values
      obtained by tono-pachymetry and calculated from measurements by US pachymetry and
      GAT was 0.33 +/- 0.87 mmHg in non-surgical eyes and 0.57 +/- 1.08 mmHg in
      post-PRK eyes. The differences in the Bland-Altman plot were not significant.
      CONCLUSIONS: The CCT measurement determined using tono-pachymetrywas
      significantly thicker than that of US pachymetry. The difference in CCT was
      greater in post-PRK eyes than in non-surgical eyes. However, the corrected IOP
      value obtained by tono-pachymetry showed reasonable agreement with that
      calculated from US pachymetry and GAT measurements.
FAU - Hahn, In Kyun
AU  - Hahn IK
AD  - Department of Ophthalmology, Asan Medical Center, University of Ulsan College of 
      Medicine, Seoul, Korea.
FAU - Kim, Jae Yong
AU  - Kim JY
AD  - Department of Ophthalmology, Asan Medical Center, University of Ulsan College of 
      Medicine, Seoul, Korea.
FAU - Kim, Myoung Joon
AU  - Kim MJ
AD  - Department of Ophthalmology, Asan Medical Center, University of Ulsan College of 
      Medicine, Seoul, Korea.
FAU - Tchah, Hungwon
AU  - Tchah H
AD  - Department of Ophthalmology, Asan Medical Center, University of Ulsan College of 
      Medicine, Seoul, Korea.
FAU - Moon, Chan Hee
AU  - Moon CH
AD  - Department of Ophthalmology, Asan Medical Center, University of Ulsan College of 
      Medicine, Seoul, Korea.; Department of Ophthalmology, Aerospace Medical Center,
      Republic of Korea Air Force, Cheongju, Korea.
LA  - eng
PT  - Journal Article
DEP - 20170202
PL  - Korea (South)
TA  - Korean J Ophthalmol
JT  - Korean journal of ophthalmology : KJO
JID - 8804513
SB  - IM
MH  - Adult
MH  - Cornea/diagnostic imaging/*surgery
MH  - Corneal Pachymetry/*methods
MH  - Female
MH  - Humans
MH  - Intraocular Pressure/*physiology
MH  - Male
MH  - Myopia/physiopathology/*surgery
MH  - Photorefractive Keratectomy/*methods
MH  - Reproducibility of Results
MH  - Tonometry, Ocular/*methods
MH  - Young Adult
PMC - PMC5327174
OTO - NOTNLM
OT  - Corneal pachymetry
OT  - Intraocular pressure
OT  - Photorefractive keratectomy
COI - Conflict of Interest: No potential conflict of interest relevant to this article 
      was reported.
EDAT- 2017/03/01 06:00
MHDA- 2017/03/16 06:00
CRDT- 2017/03/01 06:00
PHST- 2016/08/22 [received]
PHST- 2016/11/29 [accepted]
AID - 10.3341/kjo.2017.31.1.44 [doi]
PST - ppublish
SO  - Korean J Ophthalmol. 2017 Feb;31(1):44-51. doi: 10.3341/kjo.2017.31.1.44. Epub
      2017 Feb 2.

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