Noncontact corneal pachymetry with slit lamp-adapted optical coherence tomography

Experimental evaluation of online optical coherence pachymetry for corneal refractive surgery

“…This system is based on low-coherence laser interferometry and has been previously evaluated for slit-lamp-adapted OCT [37,38]. The light source of this system, a superluminescent diode (SLD-561; Superlum, Moscow, Russian Federation) at a wavelength of 1310 nm with a bandwidth of 50 nm and an intensity of the incident light of less than 200 mW was fiberoptically integrated into the laser beam of the excimer laser ( Fig.…”

“…The resulting thickness images had 360 pixels with a digitalization rate of 5.2 mm axially. Online OCP enabled the determination of the corneal thickness using the interference profile of the corneal reflections as described previously [36,37,38]. The high detection sensitivity was used to manually measure the distance between the optical signals with the highest reflectivity at the anterior and posterior corneal tissue boundaries (PachyLASIK; 4Optics).…”

“…Optical measurements of the corneal thickness based on low-coherence interferometry or optical coherence tomography (OCT) with higher resolution have been presented in experimental [6,7,13] and clinical studies [9,37,38]. Recently, a clinical noncontact system based on OCT has been integrated in an excimer laser to continuously assess the central corneal thickness [36].…”

Lamellar keratotomy to correct astigmatism in cataract surgery

“…For a preoperative distance visual acuity of less than 0.05, a value of 0.01 was considered. The peripheral corneal thickness was measured in 19 eyes with corneal optical coherence tomography (OCT) [26].…”

Large depth-high resolution full 3D imaging of the anterior segments of the eye using high speed Optical Frequency Domain Imaging

“…OCT has been demonstrated as an objective tool in corneal structural imaging [11], corneal pachymetry [12,13], detection of narrow anterior chamber angles [14,15], and measurement of corneal thickness [16], as well as in post operative evaluation of LASIK surgery [17], and intraoperative diagnostic in anterior segment surgery [18].…”