Intraocular pressure assessment after laser in situ keratomileusis: a review

Abstract

This paper aims to review the current methods available for the measurement of intraocular pressure after myopic laser in situ keratomileusis for the correction of myopia. Searches were performed for studies that assessed or compared various methods of intraocular pressure assessment. There were 20 eligible studies that explored the use of pneumotonometry, pressure phosphene tonometry, rebound tonometry, dynamic contour tonometry, statistical modeling, mathematical formulae, ocular response analyzer and even measuring intraocular pressure on the nasal cornea. Our review shows that an ideal method would be one that is independent of corneal factors. Dynamic contour tonometry and pressure phosphene tonometry held promise in research settings. More studies need to be done to validate the new methods of intraocular pressure assessment, especially in glaucoma patients. It is important to empower laser in situ keratomileusis patients with knowledge of these difficulties and potential implications for the future.

Intraocular Pressure Measurement Accuracy and Repeatability of a Modified Goldmann Prism: Multicenter Randomized Clinical Trial

“…3,4,5 Additionally, it is recognized that the effects of LASIK surgery and the corneal biomechanical differences found in children render accurate IOP measurement by the GAT problematic. 6,7,8,9 Attempts have been made to correct the various error components in GAT measurement to yield a standard IOP reading that is comparable between patients. 10,11 However, the process in practice is error prone and cumbersome, leading to almost no clinical adoption by clinicians, with the exception of CCT.…”

Biomechanik und Augeninnendruck bei Hornhauterkrankungen

“…Hier scheint sich ein Vorteil für Verfahren zu zeigen, die nicht auf den biomechanischen Eigenschaften der Hornhaut beruhen. Tsai et al beschrieben in einer Reviewarbeit ausführlich verschiedene Messmethoden und ihre Anwendbarkeit bei Patienten nach einer LASIK und kamen schlussendlich ebenfalls zu dem Ergebnis, dass die Messungen bestenfalls biomechanikunabhängig sein sollten [30].…”

Laser in situ keratomileusis in 2012: a review

“…This will impact upon the accuracy of traditional tonometric tests, which are calibrated to the average, normal thickness cornea. New methods of IOP measurement, such as dynamic contour tonometry, may offer more accurate readings; however, these are yet to be validated in wider studies . Patients at risk of developing glaucoma should be made aware of possible bias under current testing conditions; however, this does not preclude the stable glaucoma candidate from refractive surgery.…”