Lens Education

• What are double aspheric lenses and why are they better?
• How should I clean my lens?
• Why do lenses have a coating?
• Why are there so many lenses?
• I am a student/resident; which lenses should I start with?
• What does the lens diopter imply?
• Is there a "right" side that the lens needs to be facing?
• My lens has scratches on it and/or the coating has rubbed off; can it be repaired?
• Why are my lenses different shades of the same color?