Related Experiment Video
Updated: Jan 21, 2026
08:56
Tissue-Engineered Graft for Circumferential Esophageal Reconstruction in Rats
Published on: February 10, 2020
7.6K
Reconstruction strategy in isolated complete Cryptophthalmos: a case series
Zhaochuan Liu1, Binyu Xie1, Yang Li1
1Department of Ophthalmology, Beijing Tongren Hospital, Beijing Ophthalmology and Visual Science Key Lab, Capital Medical University, No.1 Dong Jiao Min Xiang Street, Dongcheng District, Beijing, 100730, China.
BMC Ophthalmology
|August 2, 2019
Summary
This study details surgical strategies for isolated complete cryptophthalmos, a rare congenital eye condition. Reconstruction surgeries improved cosmetic outcomes in all patients, with a three-stage approach recommended.
Area of Science:
- Ophthalmology
- Congenital Anomalies
- Surgical Reconstruction
Background:
- Isolated complete cryptophthalmos is a rare congenital ocular anomaly.
- Understanding its clinical characteristics is crucial for effective management.
Observation:
- A retrospective study analyzed six patients (1 month to 68 years) with isolated complete cryptophthalmos.
- Two patients had co-existing ocular cysts; surgical reconstruction involved enucleation, fornix creation, eyelid repair, and prosthesis implantation.
- Hydroxyapatite implantation was used in a pediatric patient to aid orbital development.
Findings:
- Surgical interventions significantly improved cosmetic appearance in patients with isolated complete cryptophthalmos.
- A three-stage surgical approach was developed and applied.
- Good cosmetic outcomes were achieved in all treated patients.
Implications:
- The described stepwise surgical strategies can guide the management of isolated complete cryptophthalmos.
- Orbital development requires specific consideration in pediatric cases undergoing surgical correction.
Related Concept Videos
01:10Resistors In Series
6.1K
A resistor is an ohmic device that limits the flow of charge in a circuit. Most circuits have more than one resistor. If several resistors are connected together and connected to a battery, the current supplied by the battery depends on the equivalent resistance of the circuit. The equivalent resistance of a combination of resistors depends on both their individual values and how they are connected. The simplest combination of resistors is the series combination.
In a series circuit, the...
In a series circuit, the...
6.1K
01:17Series Resonance
769
The RLC circuit impedance is defined as the ratio of the supply voltage to the circuit current. Resonance in such a circuit occurs when the imaginary part of this impedance equals zero. This specific condition means that the inductive reactance is exactly equal to the capacitive reactance. The frequency at which this happens is known as the resonant frequency. Mathematically, the resonant frequency is inversely proportional to the square root of the product of the inductance (L) and capacitance...
769
01:17Trigonometric Fourier series
757
Fourier series is a foundational mathematical technique that decomposes periodic functions into an infinite series of sinusoidal harmonics. This method enables the representation of complex periodic signals as sums of simple sine and cosine functions, facilitating their analysis and interpretation in various fields, including signal processing, acoustics, and electrical engineering.
The trigonometric Fourier series specifically expresses a periodic function with a defined period T using sine...
The trigonometric Fourier series specifically expresses a periodic function with a defined period T using sine...
757
01:21Convergence of Fourier Series
384
The Fourier series is a powerful mathematical tool for representing periodic signals as an infinite sum of complex exponentials. In practice, this infinite series is truncated to a finite number of terms, yielding a partial sum. This truncation makes the approximation of the signal feasible but introduces certain challenges, particularly near discontinuities, known as the Gibbs phenomenon.
The Gibbs phenomenon refers to the persistent oscillations and overshoots that occur near discontinuities...
The Gibbs phenomenon refers to the persistent oscillations and overshoots that occur near discontinuities...
384
01:22Series R—L Circuit Transients
386
In a series resistor-inductor (R-L) circuit, closing the switch at the start of the time period simulates a three-phase short circuit, a fault condition where all three phases of an unloaded synchronous machine are short-circuited. When there is no fault impedance and no initial current, the initial voltage is determined by the phase angle of the source voltage.
Using Kirchhoff's Voltage Law (KVL) to analyze this circuit helps determine the total asymmetrical fault current, which consists...
Using Kirchhoff's Voltage Law (KVL) to analyze this circuit helps determine the total asymmetrical fault current, which consists...
386
01:14Series and Parallel Capacitors
9.0K
Capacitors, fundamental components in electronic circuits, can be connected in series and/or parallel configurations. Each configuration has different impacts on the overall behavior of the circuit.
First, consider capacitors connected in series to a battery. In this configuration, the plate connected to the battery's positive terminal develops a positive charge, while the plate attached to the negative terminal becomes negatively charged. An equal magnitude of charge is induced on the...
First, consider capacitors connected in series to a battery. In this configuration, the plate connected to the battery's positive terminal develops a positive charge, while the plate attached to the negative terminal becomes negatively charged. An equal magnitude of charge is induced on the...
9.0K