Aesthesiometry after Cryo-keratomileusis and in situ Keratomileusis

Kohlhaas, M.; Lerche, R.-C.; Klemm, M.; Wegner, C.; Draeger, J.; Barraquer, Carmen; Barraquer, J; Flicker, D.; Rivera, Francisco J.; Carrizo, C.

doi:10.1016/s0955-3681(13)80301-2

Cited by 5 publications

(1 citation statement)

References 15 publications

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“…Re-innervation of the corneal button and sensation recovery will also be limited, in a similar manner to keratoplasty. 99,100,101,102,103 For example, at 5 years post-epikeratoplasty, only minimal corneal sensitivity was measured in the central zone, but by 10 years post-operatively it had significantly returned. However, only 17.7% of eyes at 10 years had a normal central corneal sensitivity.…”

Section: Tectonic Overlay Grafts and Epikeratophakiamentioning

confidence: 99%

Corneal Sensitivity After Ocular Surgery

Lum

Corbett

Murphy

2019

Eye &Amp; Contact Lens: Science &Amp; Clinical Practice

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The cornea is densely innervated with free nerve endings to provide a high level of sensitivity to foreign bodies or noxious substances. They also provide trophic support to the tissues of the cornea and facilitate their repair and replacement. Any reduction in the function of the nerve endings through disease, contact lens wear, or surgery may lead to corneal disease, damage, or reduced healing. Assessment of the corneal nerve function can be made by the use of specialized instruments (aesthesiometers) that stimulate the corneal nerves using different modalities-mechanical, chemical, and thermal. Each modality assesses the function of a different cohort of corneal nerve type. Ocular surgery, particularly corneal surgery, can produce significant damage to the corneal innervation. However, for the majority of surgical procedures, corneal sensation eventually returns to preoperative levels, given enough time. The principal exceptions to this are penetrating keratoplasty, epikeratophakia, and cryo-keratomileusis, where sensation rarely returns to normal. For all types of surgery, the pattern of corneal sensation loss and recovery depends on the type, depth, and extent of incision because these influence the number of nerve fibers severed, and on the healing response of the patient.

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Section: Tectonic Overlay Grafts and Epikeratophakiamentioning

confidence: 99%