PMID- 9156634
OWN - NLM
STAT- MEDLINE
DCOM- 19970521
LR  - 20191024
IS  - 0941-293X (Print)
IS  - 0941-293X (Linking)
VI  - 94
IP  - 2
DP  - 1997 Feb
TI  - [Biomechanical study of corneal stability after photorefractive keratectomy].
PG  - 109-13
AB  - BACKGROUND: Photorefraktive keratectomy (PRK) is the most frequent refractive 
      surgical procedure worldwide. The central corneal thickness is reduced due to 
      removal of the anterior stroma, including Bowman's layer, with a laser beam. This 
      procedure results in considerable alterations of the corneal structure. What does 
      this mean for the mechanical properties of the cornea? METHODS: Intraocular 
      pressure was increased via a 180 degrees tilt. Before and during this procedure, 
      corneal topography was measured by photokeratoscopy. We examined 26 patients 
      after PRK and 25 controls who had not undergone any surgical procedure. RESULTS: 
      The corneal center flattened by 0.038 +/- 0.05 dpt (P > 0.05) in the PRK patients 
      and by 0.187 +/- 0.045 dpt (P < 0.05) in the control group. PRK patients within 1 
      year after operation showed a minimal central corneal steepening, whereas PRK 
      patients after more than 1 year showed a reaction similar to that in normal 
      corneas (P < 0.05). CONCLUSION: Corneal stability is altered after PRK. After 1 
      year corneal stability seems to normalize due to stromal remodelling.
FAU - Bohm, A
AU  - Bohm A
AD  - Universitats-Augenklinik, Hamburg Eppendorf.
FAU - Kohlhaas, M
AU  - Kohlhaas M
FAU - Lerche, R C
AU  - Lerche RC
FAU - Hjortdal, J O
AU  - Hjortdal JO
FAU - Ehlers, N
AU  - Ehlers N
FAU - Draeger, J
AU  - Draeger J
LA  - ger
PT  - English Abstract
PT  - Journal Article
TT  - Biomechanische Untersuchung der Hornhautstabilitat nach photorefraktiver 
      Keratektomie.
PL  - Germany
TA  - Ophthalmologe
JT  - Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
JID - 9206148
SB  - IM
MH  - Adult
MH  - Biomechanical Phenomena
MH  - Cornea/*physiopathology
MH  - Female
MH  - Humans
MH  - Intraocular Pressure/physiology
MH  - Lasers, Excimer
MH  - Male
MH  - Middle Aged
MH  - *Photorefractive Keratectomy
MH  - Postoperative Complications/*physiopathology
MH  - Reference Values
MH  - Refraction, Ocular
EDAT- 1997/02/01 00:00
MHDA- 1997/02/01 00:01
CRDT- 1997/02/01 00:00
PHST- 1997/02/01 00:00 [pubmed]
PHST- 1997/02/01 00:01 [medline]
PHST- 1997/02/01 00:00 [entrez]
AID - 10.1007/s003470050090 [doi]
PST - ppublish
SO  - Ophthalmologe. 1997 Feb;94(2):109-13. doi: 10.1007/s003470050090.