Characterization and Causative Factors of Negative Dysphotopsia (NDys)

Vienna Institute for Research in Ocular Surgery

Status: Unknown

Conditions: Pseudoaphakia

Study type: Observational

Funder types: Other

Identifiers

NCT04224129

NDys

Details and patient eligibility

About

The present study is designed as an exploratory study, seeking to investigate the correlation of patient complaints to subjective or objective measurement methods. Better understanding of causative factors of negative dysphotopsia will improve detection and maybe prediction of this optical phenomenon.

Enrollment: 10 estimated patients

Sex: All

Ages: 21+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Pseudophakic
• Recurrently and persistently reporting about negative dysphotopsia
• Age 21 and older
• written informed consent prior to entering the study

Exclusion criteria

• Relevant ophthalmic diseases such as: glaucoma, (previous) traumatic cataract, corneal scars, age-related macular degeneration and other pathologies resulting in visual field defects
• Pregnancy