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Comparison between objective and subjective postoperative intraocular pressure immediately after cataract surgery
Julia F Heringer1, Gustavo Rosa Gameiro2,3, Maria Fernanda Abalem4
1Department of Ophthalmology, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.
Arquivos Brasileiros De Oftalmologia
|November 28, 2024
Summary
Post-cataract surgery, objective intraocular pressure (IOP) is significantly lower than subjective IOP. Surgeon experience does not impact IOP measurement accuracy, highlighting the need for standardized training.
Area of Science:
- Ophthalmology
- Surgical Outcomes
Background:
- Accurate intraocular pressure (IOP) measurement is crucial after cataract surgery.
- Subjective IOP assessment relies on tactile feedback, which may be prone to error.
Purpose of the Study:
- To compare objective and subjective IOP measurements immediately following cataract surgery.
- To evaluate the influence of surgeon experience on IOP assessment accuracy.
Main Methods:
- Surgeons provided subjective IOP estimations based on tactile perception.
- Objective IOP was measured using a Perkins tonometer in the surgical field.
- Data were analyzed comparing objective vs. subjective IOP and by surgeon experience level.
Main Results:
- Objective IOP (mean 9.14 mmHg) was significantly lower than subjective IOP (mean 19.21 mmHg; p<0.001).
- Hypotony (<6 mmHg) occurred in 30.86% of cases.
- No significant difference in subjective or objective IOP was found between less experienced and experienced surgeons.
Conclusions:
- Subjective IOP assessment is unreliable compared to objective measurements (Perkins tonometer).
- Surgeon experience does not improve the accuracy of subjective IOP estimation.
- Standardized training is essential for developing reliable surgical skills in IOP assessment.
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