Clinical experience with piggyback contact lens systems on keratoconic eyes.
J Am Optom Assoc
; 66(9): 539-43, 1995 Sep.
Article
in En
| MEDLINE
| ID: mdl-7490414
BACKGROUND: A piggyback contact lens system (PBCLS) is used when traditional lenses do not provide optimal vision or tolerance. This study assessed the use of PBCLS in keratoconic patients. METHODS: The charts of 205 keratoconic patients were retrospectively reviewed and 16 patients wearing PBCLS were identified. Visual acuity, average wearing time, and ocular complication data with PBCLS were analyzed. RESULTS: Vision and average lens wearing time were stable, if not improved, for the 16 patients when the data was compared to the patients' wear of rigid gas permeable contact lenses. Although two patients developed neovascularization and one patient developed giant papillary conjunctivitis, all pre-existing corneal complications resolved with PBCLS wear. Average Dk/L through the center and mid-periphery of the PBCLS were 8.4 +/- 1.2 x 10(-9) (mean +/- standard deviation) and 4.5 +/- 1.8 x 10(-9) cm2ml O2/sec ml mmHg (mean +/- standard deviation) respectively. No gross corneal edema was noted upon slit lamp observation. CONCLUSIONS: PBCLS can be beneficial in the management of keratoconus.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Contact Lenses
/
Keratoconus
Type of study:
Observational_studies
Limits:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
J Am Optom Assoc
Year:
1995
Document type:
Article
Affiliation country:
United States
Country of publication:
United States