Evaluation and implantation of a teledioptric lens system for cataract and age-related macular degeneration.
The teledioptric lens implant, with a high-minus central zone, was evaluated on an optical bench and implanted in the eyes of 50 patients with both cataract and age-related macular degeneration. In vitro testing demonstrated slightly reduced contrast and modulation-transfer-function as compared with a standard intraocular lens. The lens implant functions ideally with a 1.9-millimeter diameter on the high-minus portion. Lens implantation was proven safe in the clinical study. When used with spectacles as a part of a teledioptric system, the resulting visual field was 2.6 times larger than that achieved with an external telescope. Postoperative visual acuity initially improved in more than 65% of patients. After 1 year, due to disease progression, only 20% had improved acuity.
Koziol
J E
JE
LSU Eye Center, New Orleans.
Peyman
G A
GA
Cionni
R
R
Chou
J S
JS
Portney
V
V
Sun
R
R
Trentacost
D
D
D000368:Aged; D000369:Aged, 80 and over; D002386:Cataract / Q000150:complications* / Q000503:physiopathology; D002387:Cataract Extraction; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007910:Lenses, Intraocular; D008268:Macular Degeneration / Q000150:complications* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology; D014794:Visual Fields / Q000502:physiology