Photorefractive keratectomy using a 213 nm wavelength solid-state laser in eyes with previous conductive keratoplasty to treat presbyopia: Early results.
OBJECTIVE
To evaluate the efficacy and safety of photorefractive keratectomy (PRK) using a 213 nm wavelength solid-state laser to treat regression in eyes that had previous conductive keratoplasty (CK) for presbyopia.


METHODS
Outpatient refractive surgery center, Manila, Philippines.


METHODS
Prospective consecutive case series.


METHODS
Consecutive eyes that had previous CK for presbyopia were treated with PRK using a 213 nm wavelength solid-state laser (Pulzar Z1). Uncorrected near (UNVA) and distance (UDVA) visual acuities (monocular and binocular), corrected distance visual acuity (CDVA), refraction, keratometry, and slitlamp evidence of corneal haze and other complications were evaluated for up to 6 months after surgery.


RESULTS
The study evaluated 20 eyes (20 patients). Six months after PRK, 47% of eyes had monocular UNVA of Jaeger (J) 3 or better and 27% had a binocular UDVA of 0.10 logMAR (20/25 Snellen equivalent) or better with a concurrent UNVA of J3 or better. Seventy-three percent of eyes were within ±1.00 diopter of the attempted refraction. No eye lost 2 or more lines of CDVA or developed significant corneal haze.


CONCLUSIONS
Photorefractive keratectomy after CK using a 213 nm wavelength solid-state laser produced functional visual acuity in presbyopic patients in the short term (6 months).
Department of Ophthalmology and Visual Sciences, Sentro Oftalmologico Jose Rizal, Philippine General Hospital, University of the Philippines Manila, Philippines.
Anthony F
AF
Felipe
Archimedes Lee D
AL
Agahan
Terrence L
TL
Cham
Raymond P
RP
Evangelista
D003094:Collagen / Q000378:metabolism; D003315:Cornea / Q000378:metabolism; D004564:Electrocoagulation; D005260:Female; D006801:Humans; D053844:Lasers, Solid-State / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D018903:Photorefractive Keratectomy / Q000009:adverse effects / Q000379:methods*; D011305:Presbyopia / Q000378:metabolism / Q000601:surgery*; D011446:Prospective Studies; D012029:Refraction, Ocular / Q000502:physiology; D012086:Reoperation; D016896:Treatment Outcome; D015348:Vision, Binocular / Q000502:physiology; D014792:Visual Acuity / Q000502:physiology
D003094:Collagen