An untenable posture.
D003261:Contact Lenses; D064907:Diagnostic Uses of Chemicals; D009885:Ophthalmology; D009907:Optometry; D004364:Pharmaceutical Preparations; D010819:Physician's Role; D012017:Referral and Consultation; D012380:Role; D013285:Strabismus / Q000628:therapy
D064907:Diagnostic Uses of Chemicals; D004364:Pharmaceutical Preparations