Abstract
A number of surgical techniques has been developed to correct ametropia (refractive defaults) of the eye by changing the anterior corneal radius. Because the air-cornea interface makes up for about two-third of the refractive power of the eye, a refractive correction is obtained by a suitable photoablation of the cornea. For this purpose, an ArF excimer laser which emits a wavelength of 193 nm is being used. After a mechanical removal of the epithelium, the Bowman's layer and the corneal stroma are photoablated on typically 50% of the central surface of the cornea with various precomputed shapes. After regrowth of the epithelium, a smooth interface with air develops itself, which can be attributed to a mechanical equilibration. Yet, SEM studies have shown that irregularities can remain in the new stromal surface. This study is an attempt to quantify the vision blur as a function of the deformation observed at the epithelium-stroma interface.
| Original language | English (US) |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Editors | Carmen A. Puliafito |
| Publisher | Publ by Int Soc for Optical Engineering |
| Pages | 89-93 |
| Number of pages | 5 |
| Volume | 1423 |
| State | Published - 1991 |
| Externally published | Yes |
| Event | Proceedings of Ophthalmic Technologies - Los Angeles, CA, USA Duration: Jan 21 1991 → Jan 22 1991 |
Other
| Other | Proceedings of Ophthalmic Technologies |
|---|---|
| City | Los Angeles, CA, USA |
| Period | 1/21/91 → 1/22/91 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Cite this
Computed estimation of visual acuity after laser refractive keratectomy. / Rol, Pascal; Parel, Jean-Marie A; Hanna, Khalil.
Proceedings of SPIE - The International Society for Optical Engineering. ed. / Carmen A. Puliafito. Vol. 1423 Publ by Int Soc for Optical Engineering, 1991. p. 89-93.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Computed estimation of visual acuity after laser refractive keratectomy
AU - Rol, Pascal
AU - Parel, Jean-Marie A
AU - Hanna, Khalil
PY - 1991
Y1 - 1991
N2 - A number of surgical techniques has been developed to correct ametropia (refractive defaults) of the eye by changing the anterior corneal radius. Because the air-cornea interface makes up for about two-third of the refractive power of the eye, a refractive correction is obtained by a suitable photoablation of the cornea. For this purpose, an ArF excimer laser which emits a wavelength of 193 nm is being used. After a mechanical removal of the epithelium, the Bowman's layer and the corneal stroma are photoablated on typically 50% of the central surface of the cornea with various precomputed shapes. After regrowth of the epithelium, a smooth interface with air develops itself, which can be attributed to a mechanical equilibration. Yet, SEM studies have shown that irregularities can remain in the new stromal surface. This study is an attempt to quantify the vision blur as a function of the deformation observed at the epithelium-stroma interface.
AB - A number of surgical techniques has been developed to correct ametropia (refractive defaults) of the eye by changing the anterior corneal radius. Because the air-cornea interface makes up for about two-third of the refractive power of the eye, a refractive correction is obtained by a suitable photoablation of the cornea. For this purpose, an ArF excimer laser which emits a wavelength of 193 nm is being used. After a mechanical removal of the epithelium, the Bowman's layer and the corneal stroma are photoablated on typically 50% of the central surface of the cornea with various precomputed shapes. After regrowth of the epithelium, a smooth interface with air develops itself, which can be attributed to a mechanical equilibration. Yet, SEM studies have shown that irregularities can remain in the new stromal surface. This study is an attempt to quantify the vision blur as a function of the deformation observed at the epithelium-stroma interface.
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M3 - Conference contribution
VL - 1423
SP - 89
EP - 93
BT - Proceedings of SPIE - The International Society for Optical Engineering
A2 - Puliafito, Carmen A.
PB - Publ by Int Soc for Optical Engineering
ER -