Subjective refraction a clinical guide for beginners

Subjective refraction

1. Subjective Refraction: A Patient- Centered Approach to Vision Correction Shehzad Bashir OPTOMETRIST B.Sc Optom , M.Phil P.H

2. Introduction Subjective refraction is a method of determining an individual’s refractive error based on their personal response to different lens powers. It involves patient feedback to refine lens prescriptions, providing optimal vision correction tailored to each patient’s unique needs, resulting in improved accuracy and satisfaction. The goal of subjective refraction is to determine the optimal lens prescription that provides the sharpest, clearest vision for an individual, based on their personal visual perception and feedback.

3. Subjective refraction Process

4. Process

1. Initial objective refraction (e.g., autorefraction )
2. Subjective refinement:
- Patient views a visual target (e.g., chart or duochrome )
- Lens powers are adjusted based on patient feedback
- Repeat until optimal vision achieved

5. Key Peiciples Patient-centric approach
Employs patient’s own visual perception
Accounts for individual differences in visual processing

6. Benefits Improved accuracy and precision
Enhanced patient satisfaction
Better correction of astigmatism and presbyopia