The purpose of this study is to see if OCT technology can optimize scleral contact lens fittings. Subjects with keratoconus, post-penetrating keratoplasty (PK), post-LASIK ectasia, post-radial keratotomy (RK), or a variety of anterior surface disorders requiring scleral lens fittings will be considered for enrollment. For each study eye, a clinically-selected scleral lens fit will be compared against an OCT-selected lens fit. The quality of each lens fit will be determined by flourescein exam at the slit lamp. Apical clearance, limbal clearance, conjunctival compression, and lens edge lift will be assessed. A lens that satisfies all four criteria will be considered satisfactory.
Study Type
OBSERVATIONAL
Enrollment
258
Oregon Health & Science University, Casey Eye Institute
Portland, Oregon, United States
RECRUITINGApical Clearance
Apical clearance of each lens (whether clinically-selected or OCT-selected) will be graded as "acceptable," "too high," or "too low."
Time frame: 5 years
Limbal Clearance
Limbal clearance of each lens (whether clinically-selected or OCT-selected) will be graded as "acceptable," "too much," or "too little."
Time frame: 5 years
Conjunctival Compression
Conjunctival compression of each lens (whether clinically-selected or OCT-selected) will be graded as "acceptable" or "excessive."
Time frame: 5 years
Lens Edge Lift
Lens edge lift for each lens (whether clinically-selected or OCT-selected) will be graded as "acceptable" or "excessive."
Time frame: 5 years
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