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Table 2 Thematic Content Analysis of Factors Relevant to Patients' Satisfaction With Their Medication Use

From: A new measure of patient satisfaction with ocular hypotensive medications: The Treatment Satisfaction Survey for Intraocular Pressure (TSS-IOP)

Content Area Prevailing Themes and Sub-Themes
Medication Effectiveness • The eye pressure readings are the only way one can tell
  • Some report improvements in their vision, including:
     Ability to read (small print) without glasses
     Vision is clearer/not as blurred or cloudy
     Distance vision is clearer
     Able to see better at night
Unintended Medication Effects • Burning, Itching, Grittiness/Sandiness, Dryness, Tearing of eyes
  • Redness of eye, Darkening of iris of eyes
  • Swelling, Crustiness, Stickiness of eyelids
  • Visual Changes (e.g., "clear ropes" in eyes, loss of center of vision, sensitivity to light)
  • Systemic affects associated with allergenic reaction or use of oral treatments: shortness of breath, restlessness/inability to sleep, excessive perspiration, low energy, migraines
Convenience and Ease of Medication Use • Discomfort putting things in eyes
  • Strong "blink reflex" making it difficult to instill the drops
  • Difficulty learning to instill drops
  • Miss the eye when administering the medicine
  • Unable to feel whether a drop has gone into their eye
  • Inadvertently dispense more than one drop, or dispense just one more to be sure
  • Require assistance if elderly or physically impaired (e.g., have Parkinson's)
  • Trouble remembering to use the medicine, particularly on trips or vacations
  • Instillation twice a day, this is less convenient than once
  • Frustration with the daily dosing and, as a result, sometimes not taking their medicine
  • More inconvenient to administer evening than morning doses, sometimes too tired in evening
  • Delay taking medication in evening till returning home
  • Difficult to tell when their medicine is about to run out