Seoul-type keratoprosthesis: preliminary results of the first 7 human cases.
OBJECTIVE
To evaluate the clinical efficacy of a newly designed Seoul-type keratoprosthesis (S-KPro).


METHODS
The S-KPro, which consists of a polymethyl methacrylate optic, a skirt (polyurethane or polypropylene), and polypropylene haptics, was developed and implanted into 2 unsighted and 5 sighted eyes of 7 patients. One patient had a chemical burn, another had an ocular pemphigoid, and the remainder were diagnosed as having Stevens-Johnson syndrome. The preoperative visual acuities ranged from light perception to hand motions. The average follow-up time was 25.6 months.


METHODS
We evaluated anatomical stability, visual acuity, retinal status, and the visual field.


RESULTS
At the last follow-up visit, the S-KPro was well placed in 6 patients. The best-corrected visual acuities of the sighted patients ranged from 20/100 to 20/60 in the affected eye. One patient each experienced retinal detachment or endophthalmitis. Partial extrusion was found in the patient with glaucoma. A retroprosthetic membrane was detected in 1 patient and was treated with an Nd:YAG laser. No glaucomatous visual field defects were found in any of the sighted patients.


CONCLUSIONS
Anatomical success was achieved in 6 of 7 eyes. In 3 of the 5 sighted eyes, the S-KPro could rehabilitate corneal blindness not correctable with keratoplasty.
Kim
Mee Kum
MK
Department of Ophthalmology, Seoul Municipal Boramae Hospital, Korea.
Lee
Jae Lim
JL
Wee
Won Ryang
WR
Lee
Jin Hak
JH
D000328:Adult; D001672:Biocompatible Materials; D003316:Corneal Diseases / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019904:Polymethyl Methacrylate; D011126:Polypropylenes; D011140:Polyurethanes; D011183:Postoperative Complications; D019736:Prostheses and Implants; D011474:Prosthesis Design; D019919:Prosthesis Implantation; D012029:Refraction, Ocular; D014792:Visual Acuity / Q000502:physiology; D014794:Visual Fields / Q000502:physiology
D001672:Biocompatible Materials; D011126:Polypropylenes; D011140:Polyurethanes; D019904:Polymethyl Methacrylate