Hyperopia
Eye Care Source, Farsightedness, Farsightedness and its Correction, How Does Hyperopia Affect Your Vision?, Hyperopia (Farsightedness)
Myopia
eMedicine - Myopia and LASIK Surgery, Eye Care Source, How Does Myopia Affect Your Vision?, Independent Study Project on Myopia, My Experience with Orthokeratology, Myopes.com, Myopia (Near-sightedness), Myopia - Eyecare Connection, Myopia - Nearsightedness, Myopia Manual
Presbyopia
A Guide to Presbyopia, Current Concepts in Presbyopia, Eye Care Source, Eyes Over 40 - All About Vision, Laser Presbyopia Reversal (LAPR), Presbyopia Articles, Presbyopia FYI
Aniseikonia
Definition, patients at risk, symptoms, clinical significant values, how to test, and how to correct.