Related Experiment Video
Updated: Jan 30, 2026

04:15
Ye's Swing Technique for Small-incision Lenticule Extraction Surgery
Published on: June 27, 2025
360
Small Incision Lenticule Extraction for Hyperopia: 3-Month Refractive and Visual Outcomes.
Journal of Refractive Surgery (Thorofare, N.J. : 1995)
|January 12, 2019
Summary
Small Incision Lenticule Extraction (SMILE) shows promising visual and refractive outcomes for correcting hyperopia. This laser eye surgery effectively improved vision in most patients, with good refractive accuracy.
Area of Science:
- Ophthalmology
- Refractive Surgery
- Corneal Surgery
Background:
- Hyperopia correction remains a significant challenge in refractive surgery.
- Small Incision Lenticule Extraction (SMILE) is an advanced laser vision correction technique.
- Evaluating SMILE's efficacy for hyperopia is crucial for expanding its applications.
Purpose of the Study:
- To assess the visual and refractive results of SMILE for treating hyperopia.
- To determine the safety and effectiveness of SMILE in a hyperopic population.
Main Methods:
- Prospective study utilizing the VisuMax femtosecond laser for vertex-centered hyperopic SMILE.
- Inclusion criteria: attempted hyperopic meridian +1.00 to +7.00 D, CDVA ≥ 20/40.
- Analysis of 3-month outcomes including visual acuity, refractive error, and contrast sensitivity.
Main Results:
- 82 of 93 treated eyes (88%) had available 3-month data.
- For emmetropia-targeted eyes, 89% achieved uncorrected visual acuity of 20/40 or better.
- Spherical equivalent refraction was within ±1.00 D of target in 76% of eyes; contrast sensitivity remained stable.
Conclusions:
- SMILE demonstrates promising refractive and visual outcomes for hyperopia correction.
- The procedure is effective even for high degrees of hyperopia.
- Potential undercorrection may be linked to latent hyperopia in younger patients.
Related Concept Videos
Predicting Reaction Outcomes
10.8K
Kinetics describes the rate and path by which a reaction occurs. In contrast, thermodynamics deals with state functions and describes the properties, behavior, and components of a system. It is not concerned with the path taken by the process and cannot address the rate at which a reaction occurs. Although it does provide information about what can happen during a reaction process, it does not describe the detailed steps of what appears on an atomic or a molecular level. On the other hand,...
10.8K
Outcomes of Glycolysis
107.1K
Nearly all the energy used by cells comes from the bonds that make up complex organic compounds. These organic compounds are broken down into simpler molecules, such as glucose. As a result, cells extract energy from glucose over many chemical reactions—a process called cellular respiration.
Cellular respiration can occur aerobically (with oxygen) or anaerobically (without oxygen). In the presence of oxygen, cellular respiration starts with glycolysis and continues with pyruvate...
Cellular respiration can occur aerobically (with oxygen) or anaerobically (without oxygen). In the presence of oxygen, cellular respiration starts with glycolysis and continues with pyruvate...
107.1K
Guidelines for Writing Outcome
3.9K
When developing expected outcomes for a patient care plan, the nurse should adhere to the following recommendations:
Patient outcomes reflect the patient's response to the goal rather than what the nurse aims to achieve. Terminology should be observable and measurable to avoid the reader's interpretation. The desired outcome should be realistic and achievable in the designated care timeframe. Expected outcomes should align with adjunctive therapies. The outcome should enhance care...
Patient outcomes reflect the patient's response to the goal rather than what the nurse aims to achieve. Terminology should be observable and measurable to avoid the reader's interpretation. The desired outcome should be realistic and achievable in the designated care timeframe. Expected outcomes should align with adjunctive therapies. The outcome should enhance care...
3.9K
Influence of Earth's Curvature and Atmospheric Refraction on Leveling
931
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance. Over a...
931
ortho–para-Directing Activators: –CH3, –OH, –⁠NH2, –OCH3
7.5K
All ortho–para directors, excluding halogens, are activating groups. These groups donate electrons to the ring, making the ring carbons electron-rich. Consequently, the reactivity of the aromatic ring towards electrophilic substitution increases. For instance, the nitration of anisole is about 10,000 times faster than the nitration of benzene. The electron-donating effect of the methoxy group in anisole activates the ortho and para positions on the ring and stabilizes the corresponding...
7.5K
Extraction: Effects of pH
1.4K
Consider a neutral form of an amine, B, with a partition coefficient, K, in a liquid mixture containing organic and aqueous phases. The pH of the aqueous phase affects the charge on acidic and basic solutes, and the charged form is usually more soluble in the aqueous phase. Suppose the conjugate acid form of the amine is soluble only in the aqueous phase while the base form is soluble in both phases. Then the distribution coefficient, D, can be given as the ratio of amine concentration in the...
1.4K

