1.5 Conclusion
High- and low-contrast visual acuity and contrast sensitivity measures are useful screening param eters to help the clinician understand the patient’s complaints. They are also important outcome measures to quantify the effectiveness of any intervention or to understand the disease progres sion. Inadequate awareness of the techniques used to measure these visual function parameters among clinicians can lead to errors in
documentation and intervention. Although these are commonly noted as quick measures, appro priate thresholding techniques should be used while recording to avoid over/underestimating the same. Vulnerable groups such as children (particularly those with special needs) and indi viduals with visual impairment are likely to need extra time and care, as there could be a wider test–retest difference in their visual function parameters owing to the severity of the condition and overall developmental delays.
Acknowledgments We thank Ms. Shakthi Pradheepa for her help with the figures.
Funding Funding Hyderabad Eye Research Foundation, Hyderabad, India.
Disclosure None.
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